Jmat.Real.gamma, branch z less than 0.5

Percentage Accurate: 96.3% → 97.4%

Time: 9.9s

Alternatives: 19

Speedup: 2.7×

• could not determine a ground truth

  1. z = -12454142089.204865

Specification

\[z \leq 0.5\]

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(1 - z\right) - 1\\ t_1 := t\_0 + 7\\ t_2 := t\_1 + 0.5\\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {t\_2}^{\left(t\_0 + 0.5\right)}\right) \cdot e^{-t\_2}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{t\_0 + 1}\right) + \frac{-1259.1392167224028}{t\_0 + 2}\right) + \frac{771.3234287776531}{t\_0 + 3}\right) + \frac{-176.6150291621406}{t\_0 + 4}\right) + \frac{12.507343278686905}{t\_0 + 5}\right) + \frac{-0.13857109526572012}{t\_0 + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{t\_1}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{t\_0 + 8}\right)\right) \end{array} \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (let* ((t_0 (- (- 1.0 z) 1.0)) (t_1 (+ t_0 7.0)) (t_2 (+ t_1 0.5)))
   (*
    (/ PI (sin (* PI z)))
    (*
     (* (* (sqrt (* PI 2.0)) (pow t_2 (+ t_0 0.5))) (exp (- t_2)))
     (+
      (+
       (+
        (+
         (+
          (+
           (+
            (+ 0.9999999999998099 (/ 676.5203681218851 (+ t_0 1.0)))
            (/ -1259.1392167224028 (+ t_0 2.0)))
           (/ 771.3234287776531 (+ t_0 3.0)))
          (/ -176.6150291621406 (+ t_0 4.0)))
         (/ 12.507343278686905 (+ t_0 5.0)))
        (/ -0.13857109526572012 (+ t_0 6.0)))
       (/ 9.984369578019572e-6 t_1))
      (/ 1.5056327351493116e-7 (+ t_0 8.0)))))))

C

double code(double z) {
	double t_0 = (1.0 - z) - 1.0;
	double t_1 = t_0 + 7.0;
	double t_2 = t_1 + 0.5;
	return (((double) M_PI) / sin((((double) M_PI) * z))) * (((sqrt((((double) M_PI) * 2.0)) * pow(t_2, (t_0 + 0.5))) * exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))));
}

Java

public static double code(double z) {
	double t_0 = (1.0 - z) - 1.0;
	double t_1 = t_0 + 7.0;
	double t_2 = t_1 + 0.5;
	return (Math.PI / Math.sin((Math.PI * z))) * (((Math.sqrt((Math.PI * 2.0)) * Math.pow(t_2, (t_0 + 0.5))) * Math.exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))));
}

Python

def code(z):
	t_0 = (1.0 - z) - 1.0
	t_1 = t_0 + 7.0
	t_2 = t_1 + 0.5
	return (math.pi / math.sin((math.pi * z))) * (((math.sqrt((math.pi * 2.0)) * math.pow(t_2, (t_0 + 0.5))) * math.exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))))

Julia

function code(z)
	t_0 = Float64(Float64(1.0 - z) - 1.0)
	t_1 = Float64(t_0 + 7.0)
	t_2 = Float64(t_1 + 0.5)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(Float64(sqrt(Float64(pi * 2.0)) * (t_2 ^ Float64(t_0 + 0.5))) * exp(Float64(-t_2))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(t_0 + 1.0))) + Float64(-1259.1392167224028 / Float64(t_0 + 2.0))) + Float64(771.3234287776531 / Float64(t_0 + 3.0))) + Float64(-176.6150291621406 / Float64(t_0 + 4.0))) + Float64(12.507343278686905 / Float64(t_0 + 5.0))) + Float64(-0.13857109526572012 / Float64(t_0 + 6.0))) + Float64(9.984369578019572e-6 / t_1)) + Float64(1.5056327351493116e-7 / Float64(t_0 + 8.0)))))
end

MATLAB

function tmp = code(z)
	t_0 = (1.0 - z) - 1.0;
	t_1 = t_0 + 7.0;
	t_2 = t_1 + 0.5;
	tmp = (pi / sin((pi * z))) * (((sqrt((pi * 2.0)) * (t_2 ^ (t_0 + 0.5))) * exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))));
end

Wolfram

code[z_] := Block[{t$95$0 = N[(N[(1.0 - z), $MachinePrecision] - 1.0), $MachinePrecision]}, Block[{t$95$1 = N[(t$95$0 + 7.0), $MachinePrecision]}, Block[{t$95$2 = N[(t$95$1 + 0.5), $MachinePrecision]}, N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[Sqrt[N[(Pi * 2.0), $MachinePrecision]], $MachinePrecision] * N[Power[t$95$2, N[(t$95$0 + 0.5), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[Exp[(-t$95$2)], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(t$95$0 + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(t$95$0 + 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(t$95$0 + 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(t$95$0 + 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(t$95$0 + 5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(t$95$0 + 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(9.984369578019572e-6 / t$95$1), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(t$95$0 + 8.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]

Initial Program: 96.3% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(1 - z\right) - 1\\ t_1 := t\_0 + 7\\ t_2 := t\_1 + 0.5\\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {t\_2}^{\left(t\_0 + 0.5\right)}\right) \cdot e^{-t\_2}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{t\_0 + 1}\right) + \frac{-1259.1392167224028}{t\_0 + 2}\right) + \frac{771.3234287776531}{t\_0 + 3}\right) + \frac{-176.6150291621406}{t\_0 + 4}\right) + \frac{12.507343278686905}{t\_0 + 5}\right) + \frac{-0.13857109526572012}{t\_0 + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{t\_1}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{t\_0 + 8}\right)\right) \end{array} \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (let* ((t_0 (- (- 1.0 z) 1.0)) (t_1 (+ t_0 7.0)) (t_2 (+ t_1 0.5)))
   (*
    (/ PI (sin (* PI z)))
    (*
     (* (* (sqrt (* PI 2.0)) (pow t_2 (+ t_0 0.5))) (exp (- t_2)))
     (+
      (+
       (+
        (+
         (+
          (+
           (+
            (+ 0.9999999999998099 (/ 676.5203681218851 (+ t_0 1.0)))
            (/ -1259.1392167224028 (+ t_0 2.0)))
           (/ 771.3234287776531 (+ t_0 3.0)))
          (/ -176.6150291621406 (+ t_0 4.0)))
         (/ 12.507343278686905 (+ t_0 5.0)))
        (/ -0.13857109526572012 (+ t_0 6.0)))
       (/ 9.984369578019572e-6 t_1))
      (/ 1.5056327351493116e-7 (+ t_0 8.0)))))))

C

double code(double z) {
	double t_0 = (1.0 - z) - 1.0;
	double t_1 = t_0 + 7.0;
	double t_2 = t_1 + 0.5;
	return (((double) M_PI) / sin((((double) M_PI) * z))) * (((sqrt((((double) M_PI) * 2.0)) * pow(t_2, (t_0 + 0.5))) * exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))));
}

Java

public static double code(double z) {
	double t_0 = (1.0 - z) - 1.0;
	double t_1 = t_0 + 7.0;
	double t_2 = t_1 + 0.5;
	return (Math.PI / Math.sin((Math.PI * z))) * (((Math.sqrt((Math.PI * 2.0)) * Math.pow(t_2, (t_0 + 0.5))) * Math.exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))));
}

Python

def code(z):
	t_0 = (1.0 - z) - 1.0
	t_1 = t_0 + 7.0
	t_2 = t_1 + 0.5
	return (math.pi / math.sin((math.pi * z))) * (((math.sqrt((math.pi * 2.0)) * math.pow(t_2, (t_0 + 0.5))) * math.exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))))

Julia

function code(z)
	t_0 = Float64(Float64(1.0 - z) - 1.0)
	t_1 = Float64(t_0 + 7.0)
	t_2 = Float64(t_1 + 0.5)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(Float64(sqrt(Float64(pi * 2.0)) * (t_2 ^ Float64(t_0 + 0.5))) * exp(Float64(-t_2))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(t_0 + 1.0))) + Float64(-1259.1392167224028 / Float64(t_0 + 2.0))) + Float64(771.3234287776531 / Float64(t_0 + 3.0))) + Float64(-176.6150291621406 / Float64(t_0 + 4.0))) + Float64(12.507343278686905 / Float64(t_0 + 5.0))) + Float64(-0.13857109526572012 / Float64(t_0 + 6.0))) + Float64(9.984369578019572e-6 / t_1)) + Float64(1.5056327351493116e-7 / Float64(t_0 + 8.0)))))
end

MATLAB

function tmp = code(z)
	t_0 = (1.0 - z) - 1.0;
	t_1 = t_0 + 7.0;
	t_2 = t_1 + 0.5;
	tmp = (pi / sin((pi * z))) * (((sqrt((pi * 2.0)) * (t_2 ^ (t_0 + 0.5))) * exp(-t_2)) * ((((((((0.9999999999998099 + (676.5203681218851 / (t_0 + 1.0))) + (-1259.1392167224028 / (t_0 + 2.0))) + (771.3234287776531 / (t_0 + 3.0))) + (-176.6150291621406 / (t_0 + 4.0))) + (12.507343278686905 / (t_0 + 5.0))) + (-0.13857109526572012 / (t_0 + 6.0))) + (9.984369578019572e-6 / t_1)) + (1.5056327351493116e-7 / (t_0 + 8.0))));
end

Wolfram

code[z_] := Block[{t$95$0 = N[(N[(1.0 - z), $MachinePrecision] - 1.0), $MachinePrecision]}, Block[{t$95$1 = N[(t$95$0 + 7.0), $MachinePrecision]}, Block[{t$95$2 = N[(t$95$1 + 0.5), $MachinePrecision]}, N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[Sqrt[N[(Pi * 2.0), $MachinePrecision]], $MachinePrecision] * N[Power[t$95$2, N[(t$95$0 + 0.5), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[Exp[(-t$95$2)], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(t$95$0 + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(t$95$0 + 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(t$95$0 + 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(t$95$0 + 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(t$95$0 + 5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(t$95$0 + 6.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(9.984369578019572e-6 / t$95$1), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(t$95$0 + 8.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]

Alternative 1: 97.4% accurate, 1.1× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(7.5 - z\right)}^{0.5}}{{\left(7.5 - z\right)}^{z}} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (*
    (sqrt PI)
    (*
     (/ (pow (- 7.5 z) 0.5) (pow (- 7.5 z) z))
     (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    (+
     (+
      (+
       (+
        (+
         (+ 0.9999999999998099 (/ 676.5203681218851 (- (- 1.0 z) 0.0)))
         (/ -1259.1392167224028 (- (- 1.0 z) -1.0)))
        (/ 771.3234287776531 (- (- 1.0 z) -2.0)))
       (/ -176.6150291621406 (- (- 1.0 z) -3.0)))
      (/ 12.507343278686905 (- (- 1.0 z) -4.0)))
     (/ -0.13857109526572012 (- (- 1.0 z) -5.0)))
    (+
     (/ 9.984369578019572e-6 (- (- 1.0 z) -6.0))
     (/ 1.5056327351493116e-7 (- (- 1.0 z) -7.0)))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * ((pow((7.5 - z), 0.5) / pow((7.5 - z), z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * ((Math.pow((7.5 - z), 0.5) / Math.pow((7.5 - z), z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * ((math.pow((7.5 - z), 0.5) / math.pow((7.5 - z), z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64(Float64((Float64(7.5 - z) ^ 0.5) / (Float64(7.5 - z) ^ z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(Float64(1.0 - z) - 0.0))) + Float64(-1259.1392167224028 / Float64(Float64(1.0 - z) - -1.0))) + Float64(771.3234287776531 / Float64(Float64(1.0 - z) - -2.0))) + Float64(-176.6150291621406 / Float64(Float64(1.0 - z) - -3.0))) + Float64(12.507343278686905 / Float64(Float64(1.0 - z) - -4.0))) + Float64(-0.13857109526572012 / Float64(Float64(1.0 - z) - -5.0))) + Float64(Float64(9.984369578019572e-6 / Float64(Float64(1.0 - z) - -6.0)) + Float64(1.5056327351493116e-7 / Float64(Float64(1.0 - z) - -7.0))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * ((((7.5 - z) ^ 0.5) / ((7.5 - z) ^ z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[(N[Power[N[(7.5 - z), $MachinePrecision], 0.5], $MachinePrecision] / N[Power[N[(7.5 - z), $MachinePrecision], z], $MachinePrecision]), $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(N[(1.0 - z), $MachinePrecision] - 0.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(N[(1.0 - z), $MachinePrecision] - -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(N[(1.0 - z), $MachinePrecision] - -2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(N[(1.0 - z), $MachinePrecision] - -3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(N[(1.0 - z), $MachinePrecision] - -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(N[(1.0 - z), $MachinePrecision] - -5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(9.984369578019572e-6 / N[(N[(1.0 - z), $MachinePrecision] - -6.0), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(N[(1.0 - z), $MachinePrecision] - -7.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
5. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   12. lower-sqrt.f64 97.4

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

6. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
7. Step-by-step derivation

   1. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. pow-sub N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(\frac{15}{2} - z\right)}^{\frac{1}{2}}}{{\left(\frac{15}{2} - z\right)}^{z}} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. lower-/.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(\frac{15}{2} - z\right)}^{\frac{1}{2}}}{{\left(\frac{15}{2} - z\right)}^{z}} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(\frac{15}{2} - z\right)}^{\frac{1}{2}}}{{\left(\frac{15}{2} - z\right)}^{z}} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(\frac{15}{2} - z\right)}^{\frac{1}{2}}}{{\left(\frac{15}{2} - z\right)}^{z}} \cdot \left(e^{\color{blue}{z} - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(\frac{15}{2} - z\right)}^{\frac{1}{2}}}{{\left(\frac{15}{2} - z\right)}^{z}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lift--.f64 97.4

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(7.5 - z\right)}^{0.5}}{{\left(7.5 - z\right)}^{z}} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

8. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\frac{{\left(7.5 - z\right)}^{0.5}}{{\left(7.5 - z\right)}^{z}} \cdot \left(\color{blue}{e^{z - 7.5}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
9. Add Preprocessing

Alternative 2: 97.4% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(\frac{0.25 - z \cdot z}{0.5 + z}\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (*
    (sqrt PI)
    (*
     (pow (- 7.5 z) (/ (- 0.25 (* z z)) (+ 0.5 z)))
     (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    (+
     (+
      (+
       (+
        (+
         (+ 0.9999999999998099 (/ 676.5203681218851 (- (- 1.0 z) 0.0)))
         (/ -1259.1392167224028 (- (- 1.0 z) -1.0)))
        (/ 771.3234287776531 (- (- 1.0 z) -2.0)))
       (/ -176.6150291621406 (- (- 1.0 z) -3.0)))
      (/ 12.507343278686905 (- (- 1.0 z) -4.0)))
     (/ -0.13857109526572012 (- (- 1.0 z) -5.0)))
    (+
     (/ 9.984369578019572e-6 (- (- 1.0 z) -6.0))
     (/ 1.5056327351493116e-7 (- (- 1.0 z) -7.0)))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), ((0.25 - (z * z)) / (0.5 + z))) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), ((0.25 - (z * z)) / (0.5 + z))) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), ((0.25 - (z * z)) / (0.5 + z))) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(Float64(0.25 - Float64(z * z)) / Float64(0.5 + z))) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(Float64(1.0 - z) - 0.0))) + Float64(-1259.1392167224028 / Float64(Float64(1.0 - z) - -1.0))) + Float64(771.3234287776531 / Float64(Float64(1.0 - z) - -2.0))) + Float64(-176.6150291621406 / Float64(Float64(1.0 - z) - -3.0))) + Float64(12.507343278686905 / Float64(Float64(1.0 - z) - -4.0))) + Float64(-0.13857109526572012 / Float64(Float64(1.0 - z) - -5.0))) + Float64(Float64(9.984369578019572e-6 / Float64(Float64(1.0 - z) - -6.0)) + Float64(1.5056327351493116e-7 / Float64(Float64(1.0 - z) - -7.0))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * (((7.5 - z) ^ ((0.25 - (z * z)) / (0.5 + z))) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(N[(0.25 - N[(z * z), $MachinePrecision]), $MachinePrecision] / N[(0.5 + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(N[(1.0 - z), $MachinePrecision] - 0.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(N[(1.0 - z), $MachinePrecision] - -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(N[(1.0 - z), $MachinePrecision] - -2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(N[(1.0 - z), $MachinePrecision] - -3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(N[(1.0 - z), $MachinePrecision] - -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(N[(1.0 - z), $MachinePrecision] - -5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(9.984369578019572e-6 / N[(N[(1.0 - z), $MachinePrecision] - -6.0), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(N[(1.0 - z), $MachinePrecision] - -7.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
5. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   12. lower-sqrt.f64 97.4

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

6. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
7. Step-by-step derivation

   1. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. flip-- N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{2} \cdot \frac{1}{2} - z \cdot z}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lower-/.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{2} \cdot \frac{1}{2} - z \cdot z}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. unpow2 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{2} \cdot \frac{1}{2} - {z}^{2}}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{2} \cdot \frac{1}{2} - {z}^{2}}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. metadata-eval N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{4} - {z}^{2}}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. unpow2 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{4} - z \cdot z}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{\frac{1}{4} - z \cdot z}{\frac{1}{2} + z}\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-+.f64 97.4

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(\frac{0.25 - z \cdot z}{0.5 + z}\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

8. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(\frac{0.25 - z \cdot z}{0.5 + z}\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
9. Add Preprocessing

Alternative 3: 97.4% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{\frac{z \cdot z - 56.25}{z + 7.5}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (*
    (sqrt PI)
    (*
     (pow (- 7.5 z) (- 0.5 z))
     (* (exp (/ (- (* z z) 56.25) (+ z 7.5))) (sqrt 2.0))))
   (+
    (+
     (+
      (+
       (+
        (+
         (+ 0.9999999999998099 (/ 676.5203681218851 (- (- 1.0 z) 0.0)))
         (/ -1259.1392167224028 (- (- 1.0 z) -1.0)))
        (/ 771.3234287776531 (- (- 1.0 z) -2.0)))
       (/ -176.6150291621406 (- (- 1.0 z) -3.0)))
      (/ 12.507343278686905 (- (- 1.0 z) -4.0)))
     (/ -0.13857109526572012 (- (- 1.0 z) -5.0)))
    (+
     (/ 9.984369578019572e-6 (- (- 1.0 z) -6.0))
     (/ 1.5056327351493116e-7 (- (- 1.0 z) -7.0)))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((((z * z) - 56.25) / (z + 7.5))) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((((z * z) - 56.25) / (z + 7.5))) * Math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((((z * z) - 56.25) / (z + 7.5))) * math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(Float64(Float64(z * z) - 56.25) / Float64(z + 7.5))) * sqrt(2.0)))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(Float64(1.0 - z) - 0.0))) + Float64(-1259.1392167224028 / Float64(Float64(1.0 - z) - -1.0))) + Float64(771.3234287776531 / Float64(Float64(1.0 - z) - -2.0))) + Float64(-176.6150291621406 / Float64(Float64(1.0 - z) - -3.0))) + Float64(12.507343278686905 / Float64(Float64(1.0 - z) - -4.0))) + Float64(-0.13857109526572012 / Float64(Float64(1.0 - z) - -5.0))) + Float64(Float64(9.984369578019572e-6 / Float64(Float64(1.0 - z) - -6.0)) + Float64(1.5056327351493116e-7 / Float64(Float64(1.0 - z) - -7.0))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((((z * z) - 56.25) / (z + 7.5))) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(N[(N[(z * z), $MachinePrecision] - 56.25), $MachinePrecision] / N[(z + 7.5), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(N[(1.0 - z), $MachinePrecision] - 0.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(N[(1.0 - z), $MachinePrecision] - -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(N[(1.0 - z), $MachinePrecision] - -2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(N[(1.0 - z), $MachinePrecision] - -3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(N[(1.0 - z), $MachinePrecision] - -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(N[(1.0 - z), $MachinePrecision] - -5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(9.984369578019572e-6 / N[(N[(1.0 - z), $MachinePrecision] - -6.0), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(N[(1.0 - z), $MachinePrecision] - -7.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
5. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   12. lower-sqrt.f64 97.4

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

6. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
7. Step-by-step derivation

   1. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. flip-- N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{z \cdot z - \frac{15}{2} \cdot \frac{15}{2}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lower-/.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{z \cdot z - \frac{15}{2} \cdot \frac{15}{2}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. unpow2 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{{z}^{2} - \frac{15}{2} \cdot \frac{15}{2}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{{z}^{2} - \frac{15}{2} \cdot \frac{15}{2}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. unpow2 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{z \cdot z - \frac{15}{2} \cdot \frac{15}{2}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{z \cdot z - \frac{15}{2} \cdot \frac{15}{2}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. metadata-eval N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\frac{z \cdot z - \frac{225}{4}}{z + \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-+.f64 97.4

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{\frac{z \cdot z - 56.25}{z + 7.5}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

8. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{\frac{z \cdot z - 56.25}{z + 7.5}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
9. Add Preprocessing

Alternative 4: 97.4% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    (+
     (+
      (+
       (+
        (+
         (+ 0.9999999999998099 (/ 676.5203681218851 (- (- 1.0 z) 0.0)))
         (/ -1259.1392167224028 (- (- 1.0 z) -1.0)))
        (/ 771.3234287776531 (- (- 1.0 z) -2.0)))
       (/ -176.6150291621406 (- (- 1.0 z) -3.0)))
      (/ 12.507343278686905 (- (- 1.0 z) -4.0)))
     (/ -0.13857109526572012 (- (- 1.0 z) -5.0)))
    (+
     (/ 9.984369578019572e-6 (- (- 1.0 z) -6.0))
     (/ 1.5056327351493116e-7 (- (- 1.0 z) -7.0)))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(Float64(1.0 - z) - 0.0))) + Float64(-1259.1392167224028 / Float64(Float64(1.0 - z) - -1.0))) + Float64(771.3234287776531 / Float64(Float64(1.0 - z) - -2.0))) + Float64(-176.6150291621406 / Float64(Float64(1.0 - z) - -3.0))) + Float64(12.507343278686905 / Float64(Float64(1.0 - z) - -4.0))) + Float64(-0.13857109526572012 / Float64(Float64(1.0 - z) - -5.0))) + Float64(Float64(9.984369578019572e-6 / Float64(Float64(1.0 - z) - -6.0)) + Float64(1.5056327351493116e-7 / Float64(Float64(1.0 - z) - -7.0))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(N[(1.0 - z), $MachinePrecision] - 0.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(N[(1.0 - z), $MachinePrecision] - -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(N[(1.0 - z), $MachinePrecision] - -2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(N[(1.0 - z), $MachinePrecision] - -3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(N[(1.0 - z), $MachinePrecision] - -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(N[(1.0 - z), $MachinePrecision] - -5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(9.984369578019572e-6 / N[(N[(1.0 - z), $MachinePrecision] - -6.0), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(N[(1.0 - z), $MachinePrecision] - -7.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
5. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   12. lower-sqrt.f64 97.4

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

6. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
7. Add Preprocessing

Alternative 5: 97.3% accurate, 1.3× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + z \cdot \left(2.0611519559804982 \cdot 10^{-7} - -2.9403018100637997 \cdot 10^{-8} \cdot z\right)\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    (+
     (+
      (+
       (+
        (+
         (+ 0.9999999999998099 (/ 676.5203681218851 (- (- 1.0 z) 0.0)))
         (/ -1259.1392167224028 (- (- 1.0 z) -1.0)))
        (/ 771.3234287776531 (- (- 1.0 z) -2.0)))
       (/ -176.6150291621406 (- (- 1.0 z) -3.0)))
      (/ 12.507343278686905 (- (- 1.0 z) -4.0)))
     (/ -0.13857109526572012 (- (- 1.0 z) -5.0)))
    (+
     1.4451589203350195e-6
     (* z (- 2.0611519559804982e-7 (* -2.9403018100637997e-8 z))))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (z * (2.0611519559804982e-7 - (-2.9403018100637997e-8 * z))))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (z * (2.0611519559804982e-7 - (-2.9403018100637997e-8 * z))))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (z * (2.0611519559804982e-7 - (-2.9403018100637997e-8 * z))))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(Float64(1.0 - z) - 0.0))) + Float64(-1259.1392167224028 / Float64(Float64(1.0 - z) - -1.0))) + Float64(771.3234287776531 / Float64(Float64(1.0 - z) - -2.0))) + Float64(-176.6150291621406 / Float64(Float64(1.0 - z) - -3.0))) + Float64(12.507343278686905 / Float64(Float64(1.0 - z) - -4.0))) + Float64(-0.13857109526572012 / Float64(Float64(1.0 - z) - -5.0))) + Float64(1.4451589203350195e-6 + Float64(z * Float64(2.0611519559804982e-7 - Float64(-2.9403018100637997e-8 * z)))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (z * (2.0611519559804982e-7 - (-2.9403018100637997e-8 * z))))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(N[(1.0 - z), $MachinePrecision] - 0.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(N[(1.0 - z), $MachinePrecision] - -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(N[(1.0 - z), $MachinePrecision] - -2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(N[(1.0 - z), $MachinePrecision] - -3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(N[(1.0 - z), $MachinePrecision] - -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(N[(1.0 - z), $MachinePrecision] - -5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(1.4451589203350195e-6 + N[(z * N[(2.0611519559804982e-7 - N[(-2.9403018100637997e-8 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
5. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   12. lower-sqrt.f64 97.4

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

6. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

7. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \color{blue}{\left(\frac{2023222488469027353}{1400000000000000000000000} + z \cdot \left(\frac{16159431334887105871}{78400000000000000000000000} + \frac{129091010669041056297}{4390400000000000000000000000} \cdot z\right)\right)}\right)\right) \]
8. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \color{blue}{z \cdot \left(\frac{16159431334887105871}{78400000000000000000000000} + \frac{129091010669041056297}{4390400000000000000000000000} \cdot z\right)}\right)\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + z \cdot \color{blue}{\left(\frac{16159431334887105871}{78400000000000000000000000} + \frac{129091010669041056297}{4390400000000000000000000000} \cdot z\right)}\right)\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + z \cdot \left(\frac{16159431334887105871}{78400000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{129091010669041056297}{4390400000000000000000000000}\right)\right) \cdot z}\right)\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + z \cdot \left(\frac{16159431334887105871}{78400000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{129091010669041056297}{4390400000000000000000000000}\right)\right) \cdot z}\right)\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + z \cdot \left(\frac{16159431334887105871}{78400000000000000000000000} - \left(\mathsf{neg}\left(\frac{129091010669041056297}{4390400000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right)\right) \]

   6. metadata-eval 97.2

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + z \cdot \left(2.0611519559804982 \cdot 10^{-7} - -2.9403018100637997 \cdot 10^{-8} \cdot z\right)\right)\right)\right) \]

9. Applied rewrites 97.2%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \color{blue}{\left(1.4451589203350195 \cdot 10^{-6} + z \cdot \left(2.0611519559804982 \cdot 10^{-7} - -2.9403018100637997 \cdot 10^{-8} \cdot z\right)\right)}\right)\right) \]
10. Add Preprocessing

Alternative 6: 97.3% accurate, 1.3× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{z - 7.5}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (* (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (sqrt 2.0))) (exp (- z 7.5)))
   (+
    (+
     (+
      (+
       (+
        (+
         (+ 0.9999999999998099 (/ 676.5203681218851 (- (- 1.0 z) 0.0)))
         (/ -1259.1392167224028 (- (- 1.0 z) -1.0)))
        (/ 771.3234287776531 (- (- 1.0 z) -2.0)))
       (/ -176.6150291621406 (- (- 1.0 z) -3.0)))
      (/ 12.507343278686905 (- (- 1.0 z) -4.0)))
     (/ -0.13857109526572012 (- (- 1.0 z) -5.0)))
    (+ 1.4451589203350195e-6 (* 2.0611519559804982e-7 z))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * (((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * sqrt(2.0))) * exp((z - 7.5))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * (((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * Math.sqrt(2.0))) * Math.exp((z - 7.5))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * (((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * math.sqrt(2.0))) * math.exp((z - 7.5))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * sqrt(2.0))) * exp(Float64(z - 7.5))) * Float64(Float64(Float64(Float64(Float64(Float64(Float64(0.9999999999998099 + Float64(676.5203681218851 / Float64(Float64(1.0 - z) - 0.0))) + Float64(-1259.1392167224028 / Float64(Float64(1.0 - z) - -1.0))) + Float64(771.3234287776531 / Float64(Float64(1.0 - z) - -2.0))) + Float64(-176.6150291621406 / Float64(Float64(1.0 - z) - -3.0))) + Float64(12.507343278686905 / Float64(Float64(1.0 - z) - -4.0))) + Float64(-0.13857109526572012 / Float64(Float64(1.0 - z) - -5.0))) + Float64(1.4451589203350195e-6 + Float64(2.0611519559804982e-7 * z)))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * (((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * sqrt(2.0))) * exp((z - 7.5))) * (((((((0.9999999999998099 + (676.5203681218851 / ((1.0 - z) - 0.0))) + (-1259.1392167224028 / ((1.0 - z) - -1.0))) + (771.3234287776531 / ((1.0 - z) - -2.0))) + (-176.6150291621406 / ((1.0 - z) - -3.0))) + (12.507343278686905 / ((1.0 - z) - -4.0))) + (-0.13857109526572012 / ((1.0 - z) - -5.0))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[(N[(N[(0.9999999999998099 + N[(676.5203681218851 / N[(N[(1.0 - z), $MachinePrecision] - 0.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-1259.1392167224028 / N[(N[(1.0 - z), $MachinePrecision] - -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(771.3234287776531 / N[(N[(1.0 - z), $MachinePrecision] - -2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-176.6150291621406 / N[(N[(1.0 - z), $MachinePrecision] - -3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(12.507343278686905 / N[(N[(1.0 - z), $MachinePrecision] - -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.13857109526572012 / N[(N[(1.0 - z), $MachinePrecision] - -5.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(1.4451589203350195e-6 + N[(2.0611519559804982e-7 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \color{blue}{\left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)}\right)\right) \]
5. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \color{blue}{\frac{16159431334887105871}{78400000000000000000000000} \cdot z}\right)\right)\right) \]

   2. lower-*.f64 97.2

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot \color{blue}{z}\right)\right)\right) \]

6. Applied rewrites 97.2%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \color{blue}{\left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)}\right)\right) \]

7. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]
8. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   4. pow-to-exp N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \color{blue}{\sqrt{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   6. lift-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   7. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   8. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   9. lift-sqrt.f64 97.2

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]

9. Applied rewrites 97.2%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]

10. Taylor expanded in z around 0

    \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{\color{blue}{z - \frac{15}{2}}}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]
11. Step-by-step derivation

    1. lift--.f64 97.2

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{z - \color{blue}{7.5}}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]

12. Applied rewrites 97.2%

    \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{\color{blue}{z - 7.5}}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]
13. Add Preprocessing

Alternative 7: 97.3% accurate, 1.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{69370.70318429549 - t\_0 \cdot t\_0}{263.3831869810514 - t\_0}\right) \end{array} \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (let* ((t_0 (* z (- 436.8961725563396 (* -545.0353078428827 z)))))
   (*
    (/ PI (sin (* PI z)))
    (*
     (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
     (/ (- 69370.70318429549 (* t_0 t_0)) (- 263.3831869810514 t_0))))))

C

double code(double z) {
	double t_0 = z * (436.8961725563396 - (-545.0353078428827 * z));
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * ((69370.70318429549 - (t_0 * t_0)) / (263.3831869810514 - t_0)));
}

Java

public static double code(double z) {
	double t_0 = z * (436.8961725563396 - (-545.0353078428827 * z));
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * ((69370.70318429549 - (t_0 * t_0)) / (263.3831869810514 - t_0)));
}

Python

def code(z):
	t_0 = z * (436.8961725563396 - (-545.0353078428827 * z))
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * ((69370.70318429549 - (t_0 * t_0)) / (263.3831869810514 - t_0)))

Julia

function code(z)
	t_0 = Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z)))
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(Float64(69370.70318429549 - Float64(t_0 * t_0)) / Float64(263.3831869810514 - t_0))))
end

MATLAB

function tmp = code(z)
	t_0 = z * (436.8961725563396 - (-545.0353078428827 * z));
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * ((69370.70318429549 - (t_0 * t_0)) / (263.3831869810514 - t_0)));
end

Wolfram

code[z_] := Block[{t$95$0 = N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(69370.70318429549 - N[(t$95$0 * t$95$0), $MachinePrecision]), $MachinePrecision] / N[(263.3831869810514 - t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
8. Step-by-step derivation

   1. lift-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lift-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. lift-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot \color{blue}{z}\right)\right)\right) \]

   4. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z}\right)\right)\right) \]

   5. flip-+ N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1106209385320415913103082059}{4200000000000000000000000} \cdot \frac{1106209385320415913103082059}{4200000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\color{blue}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}}\right) \]

   6. lower-/.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1106209385320415913103082059}{4200000000000000000000000} \cdot \frac{1106209385320415913103082059}{4200000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\color{blue}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}}\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1106209385320415913103082059}{4200000000000000000000000} \cdot \frac{1106209385320415913103082059}{4200000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\color{blue}{\frac{1106209385320415913103082059}{4200000000000000000000000}} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   8. metadata-eval N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   10. lift--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   11. lift-*.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   12. lift-*.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   13. lift--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   14. lift-*.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   15. lift-*.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right) \]

   16. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{\frac{1223699204170972405458614049551529263107435644887679481}{17640000000000000000000000000000000000000000000000} - \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right) \cdot \left(z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}{\frac{1106209385320415913103082059}{4200000000000000000000000} - \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}}\right) \]

9. Applied rewrites 97.3%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \frac{69370.70318429549 - \left(z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right) \cdot \left(z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}{\color{blue}{263.3831869810514 - z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)}}\right) \]
10. Add Preprocessing

Alternative 8: 97.3% accurate, 1.8× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(263.3831855358925 + z \cdot \left(436.8961723502244 - -545.0353078134797 \cdot z\right)\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    (+ 263.3831855358925 (* z (- 436.8961723502244 (* -545.0353078134797 z))))
    (+
     (/ 9.984369578019572e-6 (- (- 1.0 z) -6.0))
     (/ 1.5056327351493116e-7 (- (- 1.0 z) -7.0)))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(Float64(263.3831855358925 + Float64(z * Float64(436.8961723502244 - Float64(-545.0353078134797 * z)))) + Float64(Float64(9.984369578019572e-6 / Float64(Float64(1.0 - z) - -6.0)) + Float64(1.5056327351493116e-7 / Float64(Float64(1.0 - z) - -7.0))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + ((9.984369578019572e-6 / ((1.0 - z) - -6.0)) + (1.5056327351493116e-7 / ((1.0 - z) - -7.0)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(263.3831855358925 + N[(z * N[(436.8961723502244 - N[(-545.0353078134797 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(9.984369578019572e-6 / N[(N[(1.0 - z), $MachinePrecision] - -6.0), $MachinePrecision]), $MachinePrecision] + N[(1.5056327351493116e-7 / N[(N[(1.0 - z), $MachinePrecision] - -7.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
5. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   12. lower-sqrt.f64 97.4

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

6. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

7. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\color{blue}{\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} + \frac{367898832774098786021}{675000000000000000} \cdot z\right)\right)} + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]
8. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + \color{blue}{z \cdot \left(\frac{131068851705067315609}{300000000000000000} + \frac{367898832774098786021}{675000000000000000} \cdot z\right)}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \color{blue}{\left(\frac{131068851705067315609}{300000000000000000} + \frac{367898832774098786021}{675000000000000000} \cdot z\right)}\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{367898832774098786021}{675000000000000000}\right)\right) \cdot z}\right)\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{367898832774098786021}{675000000000000000}\right)\right) \cdot z}\right)\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} - \left(\mathsf{neg}\left(\frac{367898832774098786021}{675000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right) + \left(\frac{\frac{2496092394504893}{250000000000000000000}}{\left(1 - z\right) - -6} + \frac{\frac{3764081837873279}{25000000000000000000000}}{\left(1 - z\right) - -7}\right)\right)\right) \]

   6. metadata-eval 97.3

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\left(263.3831855358925 + z \cdot \left(436.8961723502244 - -545.0353078134797 \cdot z\right)\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]

9. Applied rewrites 97.3%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\color{blue}{\left(263.3831855358925 + z \cdot \left(436.8961723502244 - -545.0353078134797 \cdot z\right)\right)} + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)\right) \]
10. Add Preprocessing

Alternative 9: 97.2% accurate, 1.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \left(1 - z\right) - 1\\ t_1 := \left(t\_0 + 7\right) + 0.5\\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\left(\sqrt{\pi} \cdot \sqrt{2}\right) \cdot {t\_1}^{\left(t\_0 + 0.5\right)}\right) \cdot e^{-t\_1}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (let* ((t_0 (- (- 1.0 z) 1.0)) (t_1 (+ (+ t_0 7.0) 0.5)))
   (*
    (/ PI (sin (* PI z)))
    (*
     (* (* (* (sqrt PI) (sqrt 2.0)) (pow t_1 (+ t_0 0.5))) (exp (- t_1)))
     (+
      263.3831869810514
      (* z (- 436.8961725563396 (* -545.0353078428827 z))))))))

C

double code(double z) {
	double t_0 = (1.0 - z) - 1.0;
	double t_1 = (t_0 + 7.0) + 0.5;
	return (((double) M_PI) / sin((((double) M_PI) * z))) * ((((sqrt(((double) M_PI)) * sqrt(2.0)) * pow(t_1, (t_0 + 0.5))) * exp(-t_1)) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	double t_0 = (1.0 - z) - 1.0;
	double t_1 = (t_0 + 7.0) + 0.5;
	return (Math.PI / Math.sin((Math.PI * z))) * ((((Math.sqrt(Math.PI) * Math.sqrt(2.0)) * Math.pow(t_1, (t_0 + 0.5))) * Math.exp(-t_1)) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	t_0 = (1.0 - z) - 1.0
	t_1 = (t_0 + 7.0) + 0.5
	return (math.pi / math.sin((math.pi * z))) * ((((math.sqrt(math.pi) * math.sqrt(2.0)) * math.pow(t_1, (t_0 + 0.5))) * math.exp(-t_1)) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	t_0 = Float64(Float64(1.0 - z) - 1.0)
	t_1 = Float64(Float64(t_0 + 7.0) + 0.5)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(Float64(Float64(sqrt(pi) * sqrt(2.0)) * (t_1 ^ Float64(t_0 + 0.5))) * exp(Float64(-t_1))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	t_0 = (1.0 - z) - 1.0;
	t_1 = (t_0 + 7.0) + 0.5;
	tmp = (pi / sin((pi * z))) * ((((sqrt(pi) * sqrt(2.0)) * (t_1 ^ (t_0 + 0.5))) * exp(-t_1)) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := Block[{t$95$0 = N[(N[(1.0 - z), $MachinePrecision] - 1.0), $MachinePrecision]}, Block[{t$95$1 = N[(N[(t$95$0 + 7.0), $MachinePrecision] + 0.5), $MachinePrecision]}, N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision] * N[Power[t$95$1, N[(t$95$0 + 0.5), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[Exp[(-t$95$1)], $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]
5. Step-by-step derivation

   1. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\color{blue}{\sqrt{\pi \cdot 2}} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\color{blue}{\mathsf{PI}\left(\right)} \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\color{blue}{\mathsf{PI}\left(\right) \cdot 2}} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. sqrt-prod N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \sqrt{2}\right)} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \sqrt{2}\right)} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\left(\color{blue}{\sqrt{\mathsf{PI}\left(\right)}} \cdot \sqrt{2}\right) \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\left(\sqrt{\color{blue}{\pi}} \cdot \sqrt{2}\right) \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower-sqrt.f64 97.3

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\left(\sqrt{\pi} \cdot \color{blue}{\sqrt{2}}\right) \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

6. Applied rewrites 97.3%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\color{blue}{\left(\sqrt{\pi} \cdot \sqrt{2}\right)} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
7. Add Preprocessing

Alternative 10: 97.2% accurate, 1.9× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(263.3831855358925 + z \cdot \left(436.8961723502244 - -545.0353078134797 \cdot z\right)\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (sin (* PI z)))
  (*
   (*
    (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (sqrt 2.0)))
    (exp (- (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5))))
   (+
    (+ 263.3831855358925 (* z (- 436.8961723502244 (* -545.0353078134797 z))))
    (+ 1.4451589203350195e-6 (* 2.0611519559804982e-7 z))))))

C

double code(double z) {
	return (((double) M_PI) / sin((((double) M_PI) * z))) * (((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * sqrt(2.0))) * exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))));
}

Java

public static double code(double z) {
	return (Math.PI / Math.sin((Math.PI * z))) * (((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * Math.sqrt(2.0))) * Math.exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))));
}

Python

def code(z):
	return (math.pi / math.sin((math.pi * z))) * (((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * math.sqrt(2.0))) * math.exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))))

Julia

function code(z)
	return Float64(Float64(pi / sin(Float64(pi * z))) * Float64(Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * sqrt(2.0))) * exp(Float64(-Float64(Float64(Float64(Float64(1.0 - z) - 1.0) + 7.0) + 0.5)))) * Float64(Float64(263.3831855358925 + Float64(z * Float64(436.8961723502244 - Float64(-545.0353078134797 * z)))) + Float64(1.4451589203350195e-6 + Float64(2.0611519559804982e-7 * z)))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / sin((pi * z))) * (((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * sqrt(2.0))) * exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * ((263.3831855358925 + (z * (436.8961723502244 - (-545.0353078134797 * z)))) + (1.4451589203350195e-6 + (2.0611519559804982e-7 * z))));
end

Wolfram

code[z_] := N[(N[(Pi / N[Sin[N[(Pi * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[Exp[(-N[(N[(N[(N[(1.0 - z), $MachinePrecision] - 1.0), $MachinePrecision] + 7.0), $MachinePrecision] + 0.5), $MachinePrecision])], $MachinePrecision]), $MachinePrecision] * N[(N[(263.3831855358925 + N[(z * N[(436.8961723502244 - N[(-545.0353078134797 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(1.4451589203350195e-6 + N[(2.0611519559804982e-7 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

3. Applied rewrites 97.4%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(\frac{9.984369578019572 \cdot 10^{-6}}{\left(1 - z\right) - -6} + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(1 - z\right) - -7}\right)\right)}\right) \]

4. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \color{blue}{\left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)}\right)\right) \]
5. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \color{blue}{\frac{16159431334887105871}{78400000000000000000000000} \cdot z}\right)\right)\right) \]

   2. lower-*.f64 97.2

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot \color{blue}{z}\right)\right)\right) \]

6. Applied rewrites 97.2%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \color{blue}{\left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)}\right)\right) \]

7. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]
8. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   4. pow-to-exp N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \color{blue}{\sqrt{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   6. lift-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   7. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   8. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\frac{9999999999998099}{10000000000000000} + \frac{\frac{6765203681218851}{10000000000000}}{\left(1 - z\right) - 0}\right) + \frac{\frac{-3147848041806007}{2500000000000}}{\left(1 - z\right) - -1}\right) + \frac{\frac{7713234287776531}{10000000000000}}{\left(1 - z\right) - -2}\right) + \frac{\frac{-883075145810703}{5000000000000}}{\left(1 - z\right) - -3}\right) + \frac{\frac{2501468655737381}{200000000000000}}{\left(1 - z\right) - -4}\right) + \frac{\frac{-3464277381643003}{25000000000000000}}{\left(1 - z\right) - -5}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

   9. lift-sqrt.f64 97.2

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]

9. Applied rewrites 97.2%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(1 - z\right) - 0}\right) + \frac{-1259.1392167224028}{\left(1 - z\right) - -1}\right) + \frac{771.3234287776531}{\left(1 - z\right) - -2}\right) + \frac{-176.6150291621406}{\left(1 - z\right) - -3}\right) + \frac{12.507343278686905}{\left(1 - z\right) - -4}\right) + \frac{-0.13857109526572012}{\left(1 - z\right) - -5}\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]

10. Taylor expanded in z around 0

    \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\color{blue}{\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} + \frac{367898832774098786021}{675000000000000000} \cdot z\right)\right)} + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]
11. Step-by-step derivation

    1. lower-+.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + \color{blue}{z \cdot \left(\frac{131068851705067315609}{300000000000000000} + \frac{367898832774098786021}{675000000000000000} \cdot z\right)}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

    2. lower-*.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \color{blue}{\left(\frac{131068851705067315609}{300000000000000000} + \frac{367898832774098786021}{675000000000000000} \cdot z\right)}\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

    3. fp-cancel-sign-sub-inv N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{367898832774098786021}{675000000000000000}\right)\right) \cdot z}\right)\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

    4. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{367898832774098786021}{675000000000000000}\right)\right) \cdot z}\right)\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

    5. lower-*.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\left(\frac{9876869457595968283}{37500000000000000} + z \cdot \left(\frac{131068851705067315609}{300000000000000000} - \left(\mathsf{neg}\left(\frac{367898832774098786021}{675000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right) + \left(\frac{2023222488469027353}{1400000000000000000000000} + \frac{16159431334887105871}{78400000000000000000000000} \cdot z\right)\right)\right) \]

    6. metadata-eval 97.3

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(263.3831855358925 + z \cdot \left(436.8961723502244 - -545.0353078134797 \cdot z\right)\right) + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]

12. Applied rewrites 97.3%

    \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\color{blue}{\left(263.3831855358925 + z \cdot \left(436.8961723502244 - -545.0353078134797 \cdot z\right)\right)} + \left(1.4451589203350195 \cdot 10^{-6} + 2.0611519559804982 \cdot 10^{-7} \cdot z\right)\right)\right) \]
13. Add Preprocessing

Alternative 11: 96.5% accurate, 2.3× speedup

Math

\[\begin{array}{l} \\ \frac{1 - -0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \pi\right)\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ (- 1.0 (* -0.16666666666666666 (* (* z z) (* PI PI)))) z)
  (*
   (*
    (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (sqrt 2.0)))
    (exp (- (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5))))
   (+
    263.3831869810514
    (*
     z
     (+
      436.8961725563396
      (* z (- 545.0353078428827 (* -606.6766809167608 z)))))))))

C

double code(double z) {
	return ((1.0 - (-0.16666666666666666 * ((z * z) * (((double) M_PI) * ((double) M_PI))))) / z) * (((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * sqrt(2.0))) * exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))));
}

Java

public static double code(double z) {
	return ((1.0 - (-0.16666666666666666 * ((z * z) * (Math.PI * Math.PI)))) / z) * (((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * Math.sqrt(2.0))) * Math.exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))));
}

Python

def code(z):
	return ((1.0 - (-0.16666666666666666 * ((z * z) * (math.pi * math.pi)))) / z) * (((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * math.sqrt(2.0))) * math.exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))))

Julia

function code(z)
	return Float64(Float64(Float64(1.0 - Float64(-0.16666666666666666 * Float64(Float64(z * z) * Float64(pi * pi)))) / z) * Float64(Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * sqrt(2.0))) * exp(Float64(-Float64(Float64(Float64(Float64(1.0 - z) - 1.0) + 7.0) + 0.5)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 + Float64(z * Float64(545.0353078428827 - Float64(-606.6766809167608 * z))))))))
end

MATLAB

function tmp = code(z)
	tmp = ((1.0 - (-0.16666666666666666 * ((z * z) * (pi * pi)))) / z) * (((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * sqrt(2.0))) * exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))));
end

Wolfram

code[z_] := N[(N[(N[(1.0 - N[(-0.16666666666666666 * N[(N[(z * z), $MachinePrecision] * N[(Pi * Pi), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision] * N[(N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[Exp[(-N[(N[(N[(N[(1.0 - z), $MachinePrecision] - 1.0), $MachinePrecision] + 7.0), $MachinePrecision] + 0.5), $MachinePrecision])], $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 + N[(z * N[(545.0353078428827 - N[(-606.6766809167608 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)}\right)\right) \]

   3. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \color{blue}{z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \color{blue}{\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)}\right)\right)\right) \]

   5. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{4027292589444183035165374538123333}{6638284800000000000000000000000}\right)\right) \cdot z}\right)\right)\right)\right) \]

   6. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{4027292589444183035165374538123333}{6638284800000000000000000000000}\right)\right) \cdot z}\right)\right)\right)\right) \]

   7. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \left(\mathsf{neg}\left(\frac{4027292589444183035165374538123333}{6638284800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right)\right) \]

   8. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   4. pow-to-exp N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \color{blue}{\sqrt{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   6. lift-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   7. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   8. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   9. lift-sqrt.f64 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \color{blue}{\frac{1 + \frac{1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z}} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-/.f64 N/A

      \[\leadsto \frac{1 + \frac{1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{\color{blue}{z}} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   2. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{1 - \left(\mathsf{neg}\left(\frac{1}{6}\right)\right) \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   3. lower--.f64 N/A

      \[\leadsto \frac{1 - \left(\mathsf{neg}\left(\frac{1}{6}\right)\right) \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   4. metadata-eval N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   6. lower-*.f64 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   7. unpow2 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   8. lower-*.f64 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   9. unpow2 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right)\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   10. lower-*.f64 N/A

       \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right)\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   11. lift-PI.f64 N/A

       \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \mathsf{PI}\left(\right)\right)\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   12. lift-PI.f64 96.5

       \[\leadsto \frac{1 - -0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \pi\right)\right)}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

10. Applied rewrites 96.5%

    \[\leadsto \color{blue}{\frac{1 - -0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \pi\right)\right)}{z}} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]
11. Add Preprocessing

Alternative 12: 96.4% accurate, 2.5× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{z \cdot \left(\pi - 0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\pi \cdot \pi\right) \cdot \pi\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (* z (- PI (* 0.16666666666666666 (* (* z z) (* (* PI PI) PI))))))
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    263.3831869810514
    (* z (- 436.8961725563396 (* -545.0353078428827 z)))))))

C

double code(double z) {
	return (((double) M_PI) / (z * (((double) M_PI) - (0.16666666666666666 * ((z * z) * ((((double) M_PI) * ((double) M_PI)) * ((double) M_PI))))))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	return (Math.PI / (z * (Math.PI - (0.16666666666666666 * ((z * z) * ((Math.PI * Math.PI) * Math.PI)))))) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	return (math.pi / (z * (math.pi - (0.16666666666666666 * ((z * z) * ((math.pi * math.pi) * math.pi)))))) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	return Float64(Float64(pi / Float64(z * Float64(pi - Float64(0.16666666666666666 * Float64(Float64(z * z) * Float64(Float64(pi * pi) * pi)))))) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / (z * (pi - (0.16666666666666666 * ((z * z) * ((pi * pi) * pi)))))) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[(z * N[(Pi - N[(0.16666666666666666 * N[(N[(z * z), $MachinePrecision] * N[(N[(Pi * Pi), $MachinePrecision] * Pi), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\color{blue}{z \cdot \left(\mathsf{PI}\left(\right) + \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{3}\right)\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \color{blue}{\left(\mathsf{PI}\left(\right) + \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{3}\right)\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\mathsf{PI}\left(\right) - \color{blue}{\left(\mathsf{neg}\left(\frac{-1}{6}\right)\right) \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{3}\right)}\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lower--.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\mathsf{PI}\left(\right) - \color{blue}{\left(\mathsf{neg}\left(\frac{-1}{6}\right)\right) \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{3}\right)}\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\pi - \color{blue}{\left(\mathsf{neg}\left(\frac{-1}{6}\right)\right)} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{3}\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. metadata-eval N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\color{blue}{{z}^{2}} \cdot {\mathsf{PI}\left(\right)}^{3}\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \color{blue}{\left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{3}\right)}\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left({z}^{2} \cdot \color{blue}{{\mathsf{PI}\left(\right)}^{3}}\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. unpow2 N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot {\color{blue}{\mathsf{PI}\left(\right)}}^{3}\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot {\color{blue}{\mathsf{PI}\left(\right)}}^{3}\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. unpow3 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot \color{blue}{\mathsf{PI}\left(\right)}\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. unpow2 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left({\mathsf{PI}\left(\right)}^{2} \cdot \mathsf{PI}\left(\right)\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-*.f64 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left({\mathsf{PI}\left(\right)}^{2} \cdot \color{blue}{\mathsf{PI}\left(\right)}\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   13. unpow2 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot \mathsf{PI}\left(\right)\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   14. lower-*.f64 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot \mathsf{PI}\left(\right)\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   15. lift-PI.f64 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\pi \cdot \mathsf{PI}\left(\right)\right) \cdot \mathsf{PI}\left(\right)\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   16. lift-PI.f64 N/A

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - \frac{1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\pi \cdot \pi\right) \cdot \mathsf{PI}\left(\right)\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   17. lift-PI.f64 96.4

       \[\leadsto \frac{\pi}{z \cdot \left(\pi - 0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\pi \cdot \pi\right) \cdot \pi\right)\right)\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

10. Applied rewrites 96.4%

    \[\leadsto \frac{\pi}{\color{blue}{z \cdot \left(\pi - 0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\left(\pi \cdot \pi\right) \cdot \pi\right)\right)\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
11. Add Preprocessing

Alternative 13: 96.4% accurate, 2.7× speedup

Math

\[\begin{array}{l} \\ \frac{1}{z} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ 1.0 z)
  (*
   (*
    (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (sqrt 2.0)))
    (exp (- (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5))))
   (+
    263.3831869810514
    (*
     z
     (+
      436.8961725563396
      (* z (- 545.0353078428827 (* -606.6766809167608 z)))))))))

C

double code(double z) {
	return (1.0 / z) * (((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * sqrt(2.0))) * exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))));
}

Java

public static double code(double z) {
	return (1.0 / z) * (((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * Math.sqrt(2.0))) * Math.exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))));
}

Python

def code(z):
	return (1.0 / z) * (((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * math.sqrt(2.0))) * math.exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))))

Julia

function code(z)
	return Float64(Float64(1.0 / z) * Float64(Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * sqrt(2.0))) * exp(Float64(-Float64(Float64(Float64(Float64(1.0 - z) - 1.0) + 7.0) + 0.5)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 + Float64(z * Float64(545.0353078428827 - Float64(-606.6766809167608 * z))))))))
end

MATLAB

function tmp = code(z)
	tmp = (1.0 / z) * (((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * sqrt(2.0))) * exp(-((((1.0 - z) - 1.0) + 7.0) + 0.5))) * (263.3831869810514 + (z * (436.8961725563396 + (z * (545.0353078428827 - (-606.6766809167608 * z)))))));
end

Wolfram

code[z_] := N[(N[(1.0 / z), $MachinePrecision] * N[(N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[Exp[(-N[(N[(N[(N[(1.0 - z), $MachinePrecision] - 1.0), $MachinePrecision] + 7.0), $MachinePrecision] + 0.5), $MachinePrecision])], $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 + N[(z * N[(545.0353078428827 - N[(-606.6766809167608 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)}\right)\right) \]

   3. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \color{blue}{z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)}\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \color{blue}{\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} + \frac{4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)}\right)\right)\right) \]

   5. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{4027292589444183035165374538123333}{6638284800000000000000000000000}\right)\right) \cdot z}\right)\right)\right)\right) \]

   6. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{4027292589444183035165374538123333}{6638284800000000000000000000000}\right)\right) \cdot z}\right)\right)\right)\right) \]

   7. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \left(\mathsf{neg}\left(\frac{4027292589444183035165374538123333}{6638284800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right)\right) \]

   8. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   4. pow-to-exp N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \color{blue}{\sqrt{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   6. lift-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{\color{blue}{2}}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   7. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   8. lift--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]

   9. lift-sqrt.f64 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right)} \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \color{blue}{\frac{1}{z}} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + z \cdot \left(\frac{64608921419941589693928044520019}{118540800000000000000000000000} - \frac{-4027292589444183035165374538123333}{6638284800000000000000000000000} \cdot z\right)\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-/.f64 96.0

      \[\leadsto \frac{1}{\color{blue}{z}} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]

10. Applied rewrites 96.0%

    \[\leadsto \color{blue}{\frac{1}{z}} \cdot \left(\left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \sqrt{2}\right)\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 + z \cdot \left(545.0353078428827 - -606.6766809167608 \cdot z\right)\right)\right)\right) \]
11. Add Preprocessing

Alternative 14: 96.1% accurate, 2.7× speedup

Math

\[\begin{array}{l} \\ \frac{1 - -0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \pi\right)\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ (- 1.0 (* -0.16666666666666666 (* (* z z) (* PI PI)))) z)
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    263.3831869810514
    (* z (- 436.8961725563396 (* -545.0353078428827 z)))))))

C

double code(double z) {
	return ((1.0 - (-0.16666666666666666 * ((z * z) * (((double) M_PI) * ((double) M_PI))))) / z) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	return ((1.0 - (-0.16666666666666666 * ((z * z) * (Math.PI * Math.PI)))) / z) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	return ((1.0 - (-0.16666666666666666 * ((z * z) * (math.pi * math.pi)))) / z) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	return Float64(Float64(Float64(1.0 - Float64(-0.16666666666666666 * Float64(Float64(z * z) * Float64(pi * pi)))) / z) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	tmp = ((1.0 - (-0.16666666666666666 * ((z * z) * (pi * pi)))) / z) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := N[(N[(N[(1.0 - N[(-0.16666666666666666 * N[(N[(z * z), $MachinePrecision] * N[(Pi * Pi), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \color{blue}{\frac{1 + \frac{1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-/.f64 N/A

      \[\leadsto \frac{1 + \frac{1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{\color{blue}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{1 - \left(\mathsf{neg}\left(\frac{1}{6}\right)\right) \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lower--.f64 N/A

      \[\leadsto \frac{1 - \left(\mathsf{neg}\left(\frac{1}{6}\right)\right) \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. metadata-eval N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-*.f64 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left({z}^{2} \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. unpow2 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower-*.f64 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot {\mathsf{PI}\left(\right)}^{2}\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. unpow2 N/A

      \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right)\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-*.f64 N/A

       \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right)\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lift-PI.f64 N/A

       \[\leadsto \frac{1 - \frac{-1}{6} \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \mathsf{PI}\left(\right)\right)\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lift-PI.f64 96.4

       \[\leadsto \frac{1 - -0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \pi\right)\right)}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

10. Applied rewrites 96.4%

    \[\leadsto \color{blue}{\frac{1 - -0.16666666666666666 \cdot \left(\left(z \cdot z\right) \cdot \left(\pi \cdot \pi\right)\right)}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
11. Add Preprocessing

Alternative 15: 96.1% accurate, 3.2× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{z \cdot \pi} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (* z PI))
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    263.3831869810514
    (* z (- 436.8961725563396 (* -545.0353078428827 z)))))))

C

double code(double z) {
	return (((double) M_PI) / (z * ((double) M_PI))) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	return (Math.PI / (z * Math.PI)) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	return (math.pi / (z * math.pi)) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	return Float64(Float64(pi / Float64(z * pi)) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / (z * pi)) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[(z * Pi), $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\color{blue}{z \cdot \mathsf{PI}\left(\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{z \cdot \color{blue}{\mathsf{PI}\left(\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-PI.f64 96.1

      \[\leadsto \frac{\pi}{z \cdot \pi} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

10. Applied rewrites 96.1%

    \[\leadsto \frac{\pi}{\color{blue}{z \cdot \pi}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
11. Add Preprocessing

Alternative 16: 96.0% accurate, 3.2× speedup

Math

\[\begin{array}{l} \\ \frac{\pi}{z \cdot \pi} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ PI (* z PI))
  (*
   (*
    (sqrt PI)
    (*
     (+
      (sqrt 7.5)
      (* z (* (sqrt 7.5) (- (log 0.13333333333333333) 0.06666666666666667))))
     (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    263.3831869810514
    (* z (- 436.8961725563396 (* -545.0353078428827 z)))))))

C

double code(double z) {
	return (((double) M_PI) / (z * ((double) M_PI))) * ((sqrt(((double) M_PI)) * ((sqrt(7.5) + (z * (sqrt(7.5) * (log(0.13333333333333333) - 0.06666666666666667)))) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	return (Math.PI / (z * Math.PI)) * ((Math.sqrt(Math.PI) * ((Math.sqrt(7.5) + (z * (Math.sqrt(7.5) * (Math.log(0.13333333333333333) - 0.06666666666666667)))) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	return (math.pi / (z * math.pi)) * ((math.sqrt(math.pi) * ((math.sqrt(7.5) + (z * (math.sqrt(7.5) * (math.log(0.13333333333333333) - 0.06666666666666667)))) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	return Float64(Float64(pi / Float64(z * pi)) * Float64(Float64(sqrt(pi) * Float64(Float64(sqrt(7.5) + Float64(z * Float64(sqrt(7.5) * Float64(log(0.13333333333333333) - 0.06666666666666667)))) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	tmp = (pi / (z * pi)) * ((sqrt(pi) * ((sqrt(7.5) + (z * (sqrt(7.5) * (log(0.13333333333333333) - 0.06666666666666667)))) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := N[(N[(Pi / N[(z * Pi), $MachinePrecision]), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[(N[Sqrt[7.5], $MachinePrecision] + N[(z * N[(N[Sqrt[7.5], $MachinePrecision] * N[(N[Log[0.13333333333333333], $MachinePrecision] - 0.06666666666666667), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lower-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. lower-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. log-pow-rev N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \left({\frac{15}{2}}^{-1}\right) - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower-log.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \left({\frac{15}{2}}^{-1}\right) - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. metadata-eval 96.0

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

10. Applied rewrites 96.0%

    \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(\color{blue}{e^{z - 7.5}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

11. Taylor expanded in z around 0

    \[\leadsto \frac{\pi}{\color{blue}{z \cdot \mathsf{PI}\left(\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \frac{2}{15} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
12. Step-by-step derivation

    1. lower-*.f64 N/A

       \[\leadsto \frac{\pi}{z \cdot \color{blue}{\mathsf{PI}\left(\right)}} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \frac{2}{15} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

    2. lift-PI.f64 96.0

       \[\leadsto \frac{\pi}{z \cdot \pi} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

13. Applied rewrites 96.0%

    \[\leadsto \frac{\pi}{\color{blue}{z \cdot \pi}} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
14. Add Preprocessing

Alternative 17: 96.0% accurate, 3.3× speedup

Math

\[\begin{array}{l} \\ \frac{1}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ 1.0 z)
  (*
   (* (sqrt PI) (* (pow (- 7.5 z) (- 0.5 z)) (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    263.3831869810514
    (* z (- 436.8961725563396 (* -545.0353078428827 z)))))))

C

double code(double z) {
	return (1.0 / z) * ((sqrt(((double) M_PI)) * (pow((7.5 - z), (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	return (1.0 / z) * ((Math.sqrt(Math.PI) * (Math.pow((7.5 - z), (0.5 - z)) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	return (1.0 / z) * ((math.sqrt(math.pi) * (math.pow((7.5 - z), (0.5 - z)) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	return Float64(Float64(1.0 / z) * Float64(Float64(sqrt(pi) * Float64((Float64(7.5 - z) ^ Float64(0.5 - z)) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	tmp = (1.0 / z) * ((sqrt(pi) * (((7.5 - z) ^ (0.5 - z)) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := N[(N[(1.0 / z), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[Power[N[(7.5 - z), $MachinePrecision], N[(0.5 - z), $MachinePrecision]], $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \color{blue}{\frac{1}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-/.f64 96.1

      \[\leadsto \frac{1}{\color{blue}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

10. Applied rewrites 96.1%

    \[\leadsto \color{blue}{\frac{1}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
11. Add Preprocessing

Alternative 18: 95.9% accurate, 3.3× speedup

Math

\[\begin{array}{l} \\ \frac{1}{z} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (*
  (/ 1.0 z)
  (*
   (*
    (sqrt PI)
    (*
     (+
      (sqrt 7.5)
      (* z (* (sqrt 7.5) (- (log 0.13333333333333333) 0.06666666666666667))))
     (* (exp (- z 7.5)) (sqrt 2.0))))
   (+
    263.3831869810514
    (* z (- 436.8961725563396 (* -545.0353078428827 z)))))))

C

double code(double z) {
	return (1.0 / z) * ((sqrt(((double) M_PI)) * ((sqrt(7.5) + (z * (sqrt(7.5) * (log(0.13333333333333333) - 0.06666666666666667)))) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Java

public static double code(double z) {
	return (1.0 / z) * ((Math.sqrt(Math.PI) * ((Math.sqrt(7.5) + (z * (Math.sqrt(7.5) * (Math.log(0.13333333333333333) - 0.06666666666666667)))) * (Math.exp((z - 7.5)) * Math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
}

Python

def code(z):
	return (1.0 / z) * ((math.sqrt(math.pi) * ((math.sqrt(7.5) + (z * (math.sqrt(7.5) * (math.log(0.13333333333333333) - 0.06666666666666667)))) * (math.exp((z - 7.5)) * math.sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))))

Julia

function code(z)
	return Float64(Float64(1.0 / z) * Float64(Float64(sqrt(pi) * Float64(Float64(sqrt(7.5) + Float64(z * Float64(sqrt(7.5) * Float64(log(0.13333333333333333) - 0.06666666666666667)))) * Float64(exp(Float64(z - 7.5)) * sqrt(2.0)))) * Float64(263.3831869810514 + Float64(z * Float64(436.8961725563396 - Float64(-545.0353078428827 * z))))))
end

MATLAB

function tmp = code(z)
	tmp = (1.0 / z) * ((sqrt(pi) * ((sqrt(7.5) + (z * (sqrt(7.5) * (log(0.13333333333333333) - 0.06666666666666667)))) * (exp((z - 7.5)) * sqrt(2.0)))) * (263.3831869810514 + (z * (436.8961725563396 - (-545.0353078428827 * z)))));
end

Wolfram

code[z_] := N[(N[(1.0 / z), $MachinePrecision] * N[(N[(N[Sqrt[Pi], $MachinePrecision] * N[(N[(N[Sqrt[7.5], $MachinePrecision] + N[(z * N[(N[Sqrt[7.5], $MachinePrecision] * N[(N[Log[0.13333333333333333], $MachinePrecision] - 0.06666666666666667), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[Exp[N[(z - 7.5), $MachinePrecision]], $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(263.3831869810514 + N[(z * N[(436.8961725563396 - N[(-545.0353078428827 * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \color{blue}{\left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)}\right) \]
3. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + \color{blue}{z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \color{blue}{\left(\frac{102757979785251069442117317613}{235200000000000000000000000} + \frac{64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)}\right)\right) \]

   3. fp-cancel-sign-sub-inv N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   4. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \color{blue}{\left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot z}\right)\right)\right) \]

   5. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}^{\left(\left(\left(1 - z\right) - 1\right) + \frac{1}{2}\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + \frac{1}{2}\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \left(\mathsf{neg}\left(\frac{64608921419941589693928044520019}{118540800000000000000000000000}\right)\right) \cdot \color{blue}{z}\right)\right)\right) \]

   6. metadata-eval 96.5

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

4. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \color{blue}{\left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)}\right) \]

5. Taylor expanded in z around inf

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
6. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \color{blue}{\left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)}\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lift-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\color{blue}{e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lift-PI.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\color{blue}{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)}} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(e^{\log \left(\frac{15}{2} - z\right) \cdot \left(\frac{1}{2} - z\right)} \cdot \color{blue}{\left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)}\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. exp-to-pow N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower-pow.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{\color{blue}{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \color{blue}{\sqrt{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   10. lower-exp.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{\color{blue}{2}}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   11. lower--.f64 N/A

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(\frac{15}{2} - z\right)}^{\left(\frac{1}{2} - z\right)} \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   12. lower-sqrt.f64 96.5

       \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

7. Applied rewrites 96.5%

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\color{blue}{\left(\sqrt{\pi} \cdot \left({\left(7.5 - z\right)}^{\left(0.5 - z\right)} \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right)} \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

8. Taylor expanded in z around 0

   \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(\color{blue}{e^{z - \frac{15}{2}}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
9. Step-by-step derivation

   1. lower-+.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   2. lower-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   3. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   4. lower-*.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   5. lower-sqrt.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   6. lower--.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(-1 \cdot \log \frac{15}{2} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   7. log-pow-rev N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \left({\frac{15}{2}}^{-1}\right) - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   8. lower-log.f64 N/A

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \left({\frac{15}{2}}^{-1}\right) - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]

   9. metadata-eval 96.0

      \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

10. Applied rewrites 96.0%

    \[\leadsto \frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(\color{blue}{e^{z - 7.5}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

11. Taylor expanded in z around 0

    \[\leadsto \color{blue}{\frac{1}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{\frac{15}{2}} + z \cdot \left(\sqrt{\frac{15}{2}} \cdot \left(\log \frac{2}{15} - \frac{1}{15}\right)\right)\right) \cdot \left(e^{z - \frac{15}{2}} \cdot \sqrt{2}\right)\right)\right) \cdot \left(\frac{1106209385320415913103082059}{4200000000000000000000000} + z \cdot \left(\frac{102757979785251069442117317613}{235200000000000000000000000} - \frac{-64608921419941589693928044520019}{118540800000000000000000000000} \cdot z\right)\right)\right) \]
12. Step-by-step derivation

    1. lower-/.f64 95.9

       \[\leadsto \frac{1}{\color{blue}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]

13. Applied rewrites 95.9%

    \[\leadsto \color{blue}{\frac{1}{z}} \cdot \left(\left(\sqrt{\pi} \cdot \left(\left(\sqrt{7.5} + z \cdot \left(\sqrt{7.5} \cdot \left(\log 0.13333333333333333 - 0.06666666666666667\right)\right)\right) \cdot \left(e^{z - 7.5} \cdot \sqrt{2}\right)\right)\right) \cdot \left(263.3831869810514 + z \cdot \left(436.8961725563396 - -545.0353078428827 \cdot z\right)\right)\right) \]
14. Add Preprocessing

Alternative 19: 95.6% accurate, 8.3× speedup

Math

\[\begin{array}{l} \\ 263.3831869810514 \cdot \left(\frac{e^{-7.5} \cdot \sqrt{15}}{z} \cdot \sqrt{\pi}\right) \end{array} \]

FPCore

(FPCore (z)
 :precision binary64
 (* 263.3831869810514 (* (/ (* (exp -7.5) (sqrt 15.0)) z) (sqrt PI))))

C

double code(double z) {
	return 263.3831869810514 * (((exp(-7.5) * sqrt(15.0)) / z) * sqrt(((double) M_PI)));
}

Java

public static double code(double z) {
	return 263.3831869810514 * (((Math.exp(-7.5) * Math.sqrt(15.0)) / z) * Math.sqrt(Math.PI));
}

Python

def code(z):
	return 263.3831869810514 * (((math.exp(-7.5) * math.sqrt(15.0)) / z) * math.sqrt(math.pi))

Julia

function code(z)
	return Float64(263.3831869810514 * Float64(Float64(Float64(exp(-7.5) * sqrt(15.0)) / z) * sqrt(pi)))
end

MATLAB

function tmp = code(z)
	tmp = 263.3831869810514 * (((exp(-7.5) * sqrt(15.0)) / z) * sqrt(pi));
end

Wolfram

code[z_] := N[(263.3831869810514 * N[(N[(N[(N[Exp[-7.5], $MachinePrecision] * N[Sqrt[15.0], $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision] * N[Sqrt[Pi], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 96.3%

   \[\frac{\pi}{\sin \left(\pi \cdot z\right)} \cdot \left(\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}^{\left(\left(\left(1 - z\right) - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(\left(1 - z\right) - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(\left(1 - z\right) - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(\left(1 - z\right) - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(\left(1 - z\right) - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(\left(1 - z\right) - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(\left(1 - z\right) - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(\left(1 - z\right) - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{\left(\left(1 - z\right) - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{\left(\left(1 - z\right) - 1\right) + 8}\right)\right) \]

2. Taylor expanded in z around 0

   \[\leadsto \color{blue}{\frac{1106209385320415913103082059}{4200000000000000000000000} \cdot \left(\frac{e^{\frac{-15}{2}} \cdot \left(\sqrt{2} \cdot \sqrt{\frac{15}{2}}\right)}{z} \cdot \sqrt{\mathsf{PI}\left(\right)}\right)} \]
3. Step-by-step derivation

   1. lower-*.f64 N/A

      \[\leadsto \frac{1106209385320415913103082059}{4200000000000000000000000} \cdot \color{blue}{\left(\frac{e^{\frac{-15}{2}} \cdot \left(\sqrt{2} \cdot \sqrt{\frac{15}{2}}\right)}{z} \cdot \sqrt{\mathsf{PI}\left(\right)}\right)} \]

   2. lower-*.f64 N/A

      \[\leadsto \frac{1106209385320415913103082059}{4200000000000000000000000} \cdot \left(\frac{e^{\frac{-15}{2}} \cdot \left(\sqrt{2} \cdot \sqrt{\frac{15}{2}}\right)}{z} \cdot \color{blue}{\sqrt{\mathsf{PI}\left(\right)}}\right) \]

4. Applied rewrites 95.6%

   \[\leadsto \color{blue}{263.3831869810514 \cdot \left(\frac{e^{-7.5} \cdot \sqrt{15}}{z} \cdot \sqrt{\pi}\right)} \]
5. Add Preprocessing

Reproduce

herbie shell --seed 2025117 
(FPCore (z)
  :name "Jmat.Real.gamma, branch z less than 0.5"
  :precision binary64
  :pre (<= z 0.5)
  (* (/ PI (sin (* PI z))) (* (* (* (sqrt (* PI 2.0)) (pow (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5) (+ (- (- 1.0 z) 1.0) 0.5))) (exp (- (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5)))) (+ (+ (+ (+ (+ (+ (+ (+ 0.9999999999998099 (/ 676.5203681218851 (+ (- (- 1.0 z) 1.0) 1.0))) (/ -1259.1392167224028 (+ (- (- 1.0 z) 1.0) 2.0))) (/ 771.3234287776531 (+ (- (- 1.0 z) 1.0) 3.0))) (/ -176.6150291621406 (+ (- (- 1.0 z) 1.0) 4.0))) (/ 12.507343278686905 (+ (- (- 1.0 z) 1.0) 5.0))) (/ -0.13857109526572012 (+ (- (- 1.0 z) 1.0) 6.0))) (/ 9.984369578019572e-6 (+ (- (- 1.0 z) 1.0) 7.0))) (/ 1.5056327351493116e-7 (+ (- (- 1.0 z) 1.0) 8.0))))))