Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, I

Percentage Accurate: 93.9% → 96.5%
Time: 33.3s
Alternatives: 19
Speedup: 0.7×

Specification

?
\[\begin{array}{l} \\ \frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (/
  x
  (+
   x
   (*
    y
    (exp
     (*
      2.0
      (-
       (/ (* z (sqrt (+ t a))) t)
       (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0)))))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return x / (x + (y * exp((2.0 * (((z * sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    code = x / (x + (y * exp((2.0d0 * (((z * sqrt((t + a))) / t) - ((b - c) * ((a + (5.0d0 / 6.0d0)) - (2.0d0 / (t * 3.0d0)))))))))
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return x / (x + (y * Math.exp((2.0 * (((z * Math.sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
}
def code(x, y, z, t, a, b, c):
	return x / (x + (y * math.exp((2.0 * (((z * math.sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))))
function code(x, y, z, t, a, b, c)
	return Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(Float64(z * sqrt(Float64(t + a))) / t) - Float64(Float64(b - c) * Float64(Float64(a + Float64(5.0 / 6.0)) - Float64(2.0 / Float64(t * 3.0))))))))))
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = x / (x + (y * exp((2.0 * (((z * sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(N[(z * N[Sqrt[N[(t + a), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] / t), $MachinePrecision] - N[(N[(b - c), $MachinePrecision] * N[(N[(a + N[(5.0 / 6.0), $MachinePrecision]), $MachinePrecision] - N[(2.0 / N[(t * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}}
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 19 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 93.9% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (/
  x
  (+
   x
   (*
    y
    (exp
     (*
      2.0
      (-
       (/ (* z (sqrt (+ t a))) t)
       (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0)))))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return x / (x + (y * exp((2.0 * (((z * sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    code = x / (x + (y * exp((2.0d0 * (((z * sqrt((t + a))) / t) - ((b - c) * ((a + (5.0d0 / 6.0d0)) - (2.0d0 / (t * 3.0d0)))))))))
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return x / (x + (y * Math.exp((2.0 * (((z * Math.sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
}
def code(x, y, z, t, a, b, c):
	return x / (x + (y * math.exp((2.0 * (((z * math.sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))))
function code(x, y, z, t, a, b, c)
	return Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(Float64(z * sqrt(Float64(t + a))) / t) - Float64(Float64(b - c) * Float64(Float64(a + Float64(5.0 / 6.0)) - Float64(2.0 / Float64(t * 3.0))))))))))
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = x / (x + (y * exp((2.0 * (((z * sqrt((t + a))) / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(N[(z * N[Sqrt[N[(t + a), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] / t), $MachinePrecision] - N[(N[(b - c), $MachinePrecision] * N[(N[(a + N[(5.0 / 6.0), $MachinePrecision]), $MachinePrecision] - N[(2.0 / N[(t * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}}
\end{array}

Alternative 1: 96.5% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{z \cdot \sqrt{t + a}}{t}\\ \mathbf{if}\;t\_1 - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right) \leq \infty:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(t\_1 + \left(b - c\right) \cdot \left(\frac{0.6666666666666666}{t} + \left(-0.8333333333333334 - a\right)\right)\right)}}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (/ (* z (sqrt (+ t a))) t)))
   (if (<=
        (- t_1 (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0)))))
        INFINITY)
     (/
      x
      (+
       x
       (*
        y
        (exp
         (*
          2.0
          (+
           t_1
           (*
            (- b c)
            (+ (/ 0.6666666666666666 t) (- -0.8333333333333334 a)))))))))
     1.0)))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (z * sqrt((t + a))) / t;
	double tmp;
	if ((t_1 - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0))))) <= ((double) INFINITY)) {
		tmp = x / (x + (y * exp((2.0 * (t_1 + ((b - c) * ((0.6666666666666666 / t) + (-0.8333333333333334 - a))))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (z * Math.sqrt((t + a))) / t;
	double tmp;
	if ((t_1 - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0))))) <= Double.POSITIVE_INFINITY) {
		tmp = x / (x + (y * Math.exp((2.0 * (t_1 + ((b - c) * ((0.6666666666666666 / t) + (-0.8333333333333334 - a))))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (z * math.sqrt((t + a))) / t
	tmp = 0
	if (t_1 - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0))))) <= math.inf:
		tmp = x / (x + (y * math.exp((2.0 * (t_1 + ((b - c) * ((0.6666666666666666 / t) + (-0.8333333333333334 - a))))))))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(z * sqrt(Float64(t + a))) / t)
	tmp = 0.0
	if (Float64(t_1 - Float64(Float64(b - c) * Float64(Float64(a + Float64(5.0 / 6.0)) - Float64(2.0 / Float64(t * 3.0))))) <= Inf)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(t_1 + Float64(Float64(b - c) * Float64(Float64(0.6666666666666666 / t) + Float64(-0.8333333333333334 - a)))))))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (z * sqrt((t + a))) / t;
	tmp = 0.0;
	if ((t_1 - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0))))) <= Inf)
		tmp = x / (x + (y * exp((2.0 * (t_1 + ((b - c) * ((0.6666666666666666 / t) + (-0.8333333333333334 - a))))))));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(z * N[Sqrt[N[(t + a), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] / t), $MachinePrecision]}, If[LessEqual[N[(t$95$1 - N[(N[(b - c), $MachinePrecision] * N[(N[(a + N[(5.0 / 6.0), $MachinePrecision]), $MachinePrecision] - N[(2.0 / N[(t * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], Infinity], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(t$95$1 + N[(N[(b - c), $MachinePrecision] * N[(N[(0.6666666666666666 / t), $MachinePrecision] + N[(-0.8333333333333334 - a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{z \cdot \sqrt{t + a}}{t}\\
\mathbf{if}\;t\_1 - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right) \leq \infty:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(t\_1 + \left(b - c\right) \cdot \left(\frac{0.6666666666666666}{t} + \left(-0.8333333333333334 - a\right)\right)\right)}}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (-.f64 (/.f64 (*.f64 z (sqrt.f64 (+.f64 t a))) t) (*.f64 (-.f64 b c) (-.f64 (+.f64 a (/.f64 #s(literal 5 binary64) #s(literal 6 binary64))) (/.f64 #s(literal 2 binary64) (*.f64 t #s(literal 3 binary64)))))) < +inf.0

    1. Initial program 98.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing

    if +inf.0 < (-.f64 (/.f64 (*.f64 z (sqrt.f64 (+.f64 t a))) t) (*.f64 (-.f64 b c) (-.f64 (+.f64 a (/.f64 #s(literal 5 binary64) #s(literal 6 binary64))) (/.f64 #s(literal 2 binary64) (*.f64 t #s(literal 3 binary64))))))

    1. Initial program 0.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 2: 78.2% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\\ t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot t\_1\right)}}\\ t_3 := \frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot t\_1\right)}}\\ \mathbf{if}\;c \leq -1.8 \cdot 10^{+132}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;c \leq 6.6 \cdot 10^{-305}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;c \leq 2.1 \cdot 10^{-199}:\\ \;\;\;\;\frac{1}{\frac{x + y \cdot e^{\frac{2}{\frac{t}{z \cdot \sqrt{t + a}}}}}{x}}\\ \mathbf{elif}\;c \leq 1.22 \cdot 10^{+33}:\\ \;\;\;\;t\_2\\ \mathbf{else}:\\ \;\;\;\;t\_3\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ a 0.8333333333333334)))
        (t_2 (/ x (+ x (* y (exp (* 2.0 (* b t_1)))))))
        (t_3 (/ x (+ x (* y (exp (* 2.0 (- 0.0 (* c t_1)))))))))
   (if (<= c -1.8e+132)
     t_3
     (if (<= c 6.6e-305)
       t_2
       (if (<= c 2.1e-199)
         (/ 1.0 (/ (+ x (* y (exp (/ 2.0 (/ t (* z (sqrt (+ t a)))))))) x))
         (if (<= c 1.22e+33) t_2 t_3))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	double t_2 = x / (x + (y * exp((2.0 * (b * t_1)))));
	double t_3 = x / (x + (y * exp((2.0 * (0.0 - (c * t_1))))));
	double tmp;
	if (c <= -1.8e+132) {
		tmp = t_3;
	} else if (c <= 6.6e-305) {
		tmp = t_2;
	} else if (c <= 2.1e-199) {
		tmp = 1.0 / ((x + (y * exp((2.0 / (t / (z * sqrt((t + a)))))))) / x);
	} else if (c <= 1.22e+33) {
		tmp = t_2;
	} else {
		tmp = t_3;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: t_3
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (a + 0.8333333333333334d0)
    t_2 = x / (x + (y * exp((2.0d0 * (b * t_1)))))
    t_3 = x / (x + (y * exp((2.0d0 * (0.0d0 - (c * t_1))))))
    if (c <= (-1.8d+132)) then
        tmp = t_3
    else if (c <= 6.6d-305) then
        tmp = t_2
    else if (c <= 2.1d-199) then
        tmp = 1.0d0 / ((x + (y * exp((2.0d0 / (t / (z * sqrt((t + a)))))))) / x)
    else if (c <= 1.22d+33) then
        tmp = t_2
    else
        tmp = t_3
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	double t_2 = x / (x + (y * Math.exp((2.0 * (b * t_1)))));
	double t_3 = x / (x + (y * Math.exp((2.0 * (0.0 - (c * t_1))))));
	double tmp;
	if (c <= -1.8e+132) {
		tmp = t_3;
	} else if (c <= 6.6e-305) {
		tmp = t_2;
	} else if (c <= 2.1e-199) {
		tmp = 1.0 / ((x + (y * Math.exp((2.0 / (t / (z * Math.sqrt((t + a)))))))) / x);
	} else if (c <= 1.22e+33) {
		tmp = t_2;
	} else {
		tmp = t_3;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334)
	t_2 = x / (x + (y * math.exp((2.0 * (b * t_1)))))
	t_3 = x / (x + (y * math.exp((2.0 * (0.0 - (c * t_1))))))
	tmp = 0
	if c <= -1.8e+132:
		tmp = t_3
	elif c <= 6.6e-305:
		tmp = t_2
	elif c <= 2.1e-199:
		tmp = 1.0 / ((x + (y * math.exp((2.0 / (t / (z * math.sqrt((t + a)))))))) / x)
	elif c <= 1.22e+33:
		tmp = t_2
	else:
		tmp = t_3
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(a + 0.8333333333333334))
	t_2 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(b * t_1))))))
	t_3 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(0.0 - Float64(c * t_1)))))))
	tmp = 0.0
	if (c <= -1.8e+132)
		tmp = t_3;
	elseif (c <= 6.6e-305)
		tmp = t_2;
	elseif (c <= 2.1e-199)
		tmp = Float64(1.0 / Float64(Float64(x + Float64(y * exp(Float64(2.0 / Float64(t / Float64(z * sqrt(Float64(t + a)))))))) / x));
	elseif (c <= 1.22e+33)
		tmp = t_2;
	else
		tmp = t_3;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	t_2 = x / (x + (y * exp((2.0 * (b * t_1)))));
	t_3 = x / (x + (y * exp((2.0 * (0.0 - (c * t_1))))));
	tmp = 0.0;
	if (c <= -1.8e+132)
		tmp = t_3;
	elseif (c <= 6.6e-305)
		tmp = t_2;
	elseif (c <= 2.1e-199)
		tmp = 1.0 / ((x + (y * exp((2.0 / (t / (z * sqrt((t + a)))))))) / x);
	elseif (c <= 1.22e+33)
		tmp = t_2;
	else
		tmp = t_3;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(a + 0.8333333333333334), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(b * t$95$1), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$3 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(0.0 - N[(c * t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[c, -1.8e+132], t$95$3, If[LessEqual[c, 6.6e-305], t$95$2, If[LessEqual[c, 2.1e-199], N[(1.0 / N[(N[(x + N[(y * N[Exp[N[(2.0 / N[(t / N[(z * N[Sqrt[N[(t + a), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision], If[LessEqual[c, 1.22e+33], t$95$2, t$95$3]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\\
t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot t\_1\right)}}\\
t_3 := \frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot t\_1\right)}}\\
\mathbf{if}\;c \leq -1.8 \cdot 10^{+132}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;c \leq 6.6 \cdot 10^{-305}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;c \leq 2.1 \cdot 10^{-199}:\\
\;\;\;\;\frac{1}{\frac{x + y \cdot e^{\frac{2}{\frac{t}{z \cdot \sqrt{t + a}}}}}{x}}\\

\mathbf{elif}\;c \leq 1.22 \cdot 10^{+33}:\\
\;\;\;\;t\_2\\

\mathbf{else}:\\
\;\;\;\;t\_3\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if c < -1.80000000000000008e132 or 1.22000000000000005e33 < c

    1. Initial program 89.9%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -1.80000000000000008e132 < c < 6.59999999999999965e-305 or 2.10000000000000002e-199 < c < 1.22000000000000005e33

    1. Initial program 96.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if 6.59999999999999965e-305 < c < 2.10000000000000002e-199

    1. Initial program 99.9%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in z around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Applied egg-rr0

      \[\leadsto expr\]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 3: 79.1% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;t \leq -1.85 \cdot 10^{+25}:\\ \;\;\;\;\frac{x}{y \cdot e^{-2 \cdot \left(b \cdot \left(0.8333333333333334 + a\right)\right)} + x}\\ \mathbf{elif}\;t \leq 2.1 \cdot 10^{-114}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot \left(\frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\right)\right)}}\\ \mathbf{else}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(z \cdot \sqrt{\frac{1}{t}} - \left(b - c\right) \cdot \left(a + 0.8333333333333334\right)\right)}}\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= t -1.85e+25)
   (/ x (+ (* y (exp (* -2.0 (* b (+ 0.8333333333333334 a))))) x))
   (if (<= t 2.1e-114)
     (/
      x
      (+
       x
       (*
        y
        (exp
         (*
          2.0
          (-
           0.0
           (* c (- (/ 0.6666666666666666 t) (+ a 0.8333333333333334)))))))))
     (/
      x
      (+
       x
       (*
        y
        (exp
         (*
          2.0
          (-
           (* z (sqrt (/ 1.0 t)))
           (* (- b c) (+ a 0.8333333333333334)))))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (t <= -1.85e+25) {
		tmp = x / ((y * exp((-2.0 * (b * (0.8333333333333334 + a))))) + x);
	} else if (t <= 2.1e-114) {
		tmp = x / (x + (y * exp((2.0 * (0.0 - (c * ((0.6666666666666666 / t) - (a + 0.8333333333333334))))))));
	} else {
		tmp = x / (x + (y * exp((2.0 * ((z * sqrt((1.0 / t))) - ((b - c) * (a + 0.8333333333333334)))))));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (t <= (-1.85d+25)) then
        tmp = x / ((y * exp(((-2.0d0) * (b * (0.8333333333333334d0 + a))))) + x)
    else if (t <= 2.1d-114) then
        tmp = x / (x + (y * exp((2.0d0 * (0.0d0 - (c * ((0.6666666666666666d0 / t) - (a + 0.8333333333333334d0))))))))
    else
        tmp = x / (x + (y * exp((2.0d0 * ((z * sqrt((1.0d0 / t))) - ((b - c) * (a + 0.8333333333333334d0)))))))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (t <= -1.85e+25) {
		tmp = x / ((y * Math.exp((-2.0 * (b * (0.8333333333333334 + a))))) + x);
	} else if (t <= 2.1e-114) {
		tmp = x / (x + (y * Math.exp((2.0 * (0.0 - (c * ((0.6666666666666666 / t) - (a + 0.8333333333333334))))))));
	} else {
		tmp = x / (x + (y * Math.exp((2.0 * ((z * Math.sqrt((1.0 / t))) - ((b - c) * (a + 0.8333333333333334)))))));
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if t <= -1.85e+25:
		tmp = x / ((y * math.exp((-2.0 * (b * (0.8333333333333334 + a))))) + x)
	elif t <= 2.1e-114:
		tmp = x / (x + (y * math.exp((2.0 * (0.0 - (c * ((0.6666666666666666 / t) - (a + 0.8333333333333334))))))))
	else:
		tmp = x / (x + (y * math.exp((2.0 * ((z * math.sqrt((1.0 / t))) - ((b - c) * (a + 0.8333333333333334)))))))
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (t <= -1.85e+25)
		tmp = Float64(x / Float64(Float64(y * exp(Float64(-2.0 * Float64(b * Float64(0.8333333333333334 + a))))) + x));
	elseif (t <= 2.1e-114)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(0.0 - Float64(c * Float64(Float64(0.6666666666666666 / t) - Float64(a + 0.8333333333333334)))))))));
	else
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(z * sqrt(Float64(1.0 / t))) - Float64(Float64(b - c) * Float64(a + 0.8333333333333334))))))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (t <= -1.85e+25)
		tmp = x / ((y * exp((-2.0 * (b * (0.8333333333333334 + a))))) + x);
	elseif (t <= 2.1e-114)
		tmp = x / (x + (y * exp((2.0 * (0.0 - (c * ((0.6666666666666666 / t) - (a + 0.8333333333333334))))))));
	else
		tmp = x / (x + (y * exp((2.0 * ((z * sqrt((1.0 / t))) - ((b - c) * (a + 0.8333333333333334)))))));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[t, -1.85e+25], N[(x / N[(N[(y * N[Exp[N[(-2.0 * N[(b * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision]), $MachinePrecision], If[LessEqual[t, 2.1e-114], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(0.0 - N[(c * N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(a + 0.8333333333333334), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(z * N[Sqrt[N[(1.0 / t), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] - N[(N[(b - c), $MachinePrecision] * N[(a + 0.8333333333333334), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;t \leq -1.85 \cdot 10^{+25}:\\
\;\;\;\;\frac{x}{y \cdot e^{-2 \cdot \left(b \cdot \left(0.8333333333333334 + a\right)\right)} + x}\\

\mathbf{elif}\;t \leq 2.1 \cdot 10^{-114}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot \left(\frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\right)\right)}}\\

\mathbf{else}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(z \cdot \sqrt{\frac{1}{t}} - \left(b - c\right) \cdot \left(a + 0.8333333333333334\right)\right)}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if t < -1.8499999999999999e25

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]

    if -1.8499999999999999e25 < t < 2.09999999999999993e-114

    1. Initial program 89.7%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if 2.09999999999999993e-114 < t

    1. Initial program 96.1%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 4: 78.2% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\\ t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot t\_1\right)}}\\ t_3 := \frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot t\_1\right)}}\\ \mathbf{if}\;c \leq -4.2 \cdot 10^{+134}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;c \leq 6.6 \cdot 10^{-305}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;c \leq 4.5 \cdot 10^{-199}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z}{t} \cdot \sqrt{t + a}\right)}}\\ \mathbf{elif}\;c \leq 1.8 \cdot 10^{+33}:\\ \;\;\;\;t\_2\\ \mathbf{else}:\\ \;\;\;\;t\_3\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ a 0.8333333333333334)))
        (t_2 (/ x (+ x (* y (exp (* 2.0 (* b t_1)))))))
        (t_3 (/ x (+ x (* y (exp (* 2.0 (- 0.0 (* c t_1)))))))))
   (if (<= c -4.2e+134)
     t_3
     (if (<= c 6.6e-305)
       t_2
       (if (<= c 4.5e-199)
         (/ x (+ x (* y (exp (* 2.0 (* (/ z t) (sqrt (+ t a))))))))
         (if (<= c 1.8e+33) t_2 t_3))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	double t_2 = x / (x + (y * exp((2.0 * (b * t_1)))));
	double t_3 = x / (x + (y * exp((2.0 * (0.0 - (c * t_1))))));
	double tmp;
	if (c <= -4.2e+134) {
		tmp = t_3;
	} else if (c <= 6.6e-305) {
		tmp = t_2;
	} else if (c <= 4.5e-199) {
		tmp = x / (x + (y * exp((2.0 * ((z / t) * sqrt((t + a)))))));
	} else if (c <= 1.8e+33) {
		tmp = t_2;
	} else {
		tmp = t_3;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: t_3
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (a + 0.8333333333333334d0)
    t_2 = x / (x + (y * exp((2.0d0 * (b * t_1)))))
    t_3 = x / (x + (y * exp((2.0d0 * (0.0d0 - (c * t_1))))))
    if (c <= (-4.2d+134)) then
        tmp = t_3
    else if (c <= 6.6d-305) then
        tmp = t_2
    else if (c <= 4.5d-199) then
        tmp = x / (x + (y * exp((2.0d0 * ((z / t) * sqrt((t + a)))))))
    else if (c <= 1.8d+33) then
        tmp = t_2
    else
        tmp = t_3
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	double t_2 = x / (x + (y * Math.exp((2.0 * (b * t_1)))));
	double t_3 = x / (x + (y * Math.exp((2.0 * (0.0 - (c * t_1))))));
	double tmp;
	if (c <= -4.2e+134) {
		tmp = t_3;
	} else if (c <= 6.6e-305) {
		tmp = t_2;
	} else if (c <= 4.5e-199) {
		tmp = x / (x + (y * Math.exp((2.0 * ((z / t) * Math.sqrt((t + a)))))));
	} else if (c <= 1.8e+33) {
		tmp = t_2;
	} else {
		tmp = t_3;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334)
	t_2 = x / (x + (y * math.exp((2.0 * (b * t_1)))))
	t_3 = x / (x + (y * math.exp((2.0 * (0.0 - (c * t_1))))))
	tmp = 0
	if c <= -4.2e+134:
		tmp = t_3
	elif c <= 6.6e-305:
		tmp = t_2
	elif c <= 4.5e-199:
		tmp = x / (x + (y * math.exp((2.0 * ((z / t) * math.sqrt((t + a)))))))
	elif c <= 1.8e+33:
		tmp = t_2
	else:
		tmp = t_3
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(a + 0.8333333333333334))
	t_2 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(b * t_1))))))
	t_3 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(0.0 - Float64(c * t_1)))))))
	tmp = 0.0
	if (c <= -4.2e+134)
		tmp = t_3;
	elseif (c <= 6.6e-305)
		tmp = t_2;
	elseif (c <= 4.5e-199)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(z / t) * sqrt(Float64(t + a))))))));
	elseif (c <= 1.8e+33)
		tmp = t_2;
	else
		tmp = t_3;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	t_2 = x / (x + (y * exp((2.0 * (b * t_1)))));
	t_3 = x / (x + (y * exp((2.0 * (0.0 - (c * t_1))))));
	tmp = 0.0;
	if (c <= -4.2e+134)
		tmp = t_3;
	elseif (c <= 6.6e-305)
		tmp = t_2;
	elseif (c <= 4.5e-199)
		tmp = x / (x + (y * exp((2.0 * ((z / t) * sqrt((t + a)))))));
	elseif (c <= 1.8e+33)
		tmp = t_2;
	else
		tmp = t_3;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(a + 0.8333333333333334), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(b * t$95$1), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$3 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(0.0 - N[(c * t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[c, -4.2e+134], t$95$3, If[LessEqual[c, 6.6e-305], t$95$2, If[LessEqual[c, 4.5e-199], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(z / t), $MachinePrecision] * N[Sqrt[N[(t + a), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[c, 1.8e+33], t$95$2, t$95$3]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\\
t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot t\_1\right)}}\\
t_3 := \frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot t\_1\right)}}\\
\mathbf{if}\;c \leq -4.2 \cdot 10^{+134}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;c \leq 6.6 \cdot 10^{-305}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;c \leq 4.5 \cdot 10^{-199}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z}{t} \cdot \sqrt{t + a}\right)}}\\

\mathbf{elif}\;c \leq 1.8 \cdot 10^{+33}:\\
\;\;\;\;t\_2\\

\mathbf{else}:\\
\;\;\;\;t\_3\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if c < -4.2000000000000002e134 or 1.8000000000000001e33 < c

    1. Initial program 89.9%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -4.2000000000000002e134 < c < 6.59999999999999965e-305 or 4.49999999999999998e-199 < c < 1.8000000000000001e33

    1. Initial program 96.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if 6.59999999999999965e-305 < c < 4.49999999999999998e-199

    1. Initial program 99.9%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in z around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 5: 69.0% accurate, 1.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\ t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot \left(\frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\right)\right)}}\\ \mathbf{if}\;b \leq -1.25 \cdot 10^{+76}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;b \leq -5.8 \cdot 10^{+26}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq -2.7 \cdot 10^{-119}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;b \leq 2.4 \cdot 10^{-226}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(c \cdot \left(0.8333333333333334 + a\right)\right)}}\\ \mathbf{elif}\;b \leq 1.55 \cdot 10^{-83}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot \left(b \cdot \left(t\_1 \cdot t\_1\right) + t\_1\right)\right)\right)}\\ \mathbf{elif}\;b \leq 4.5 \cdot 10^{+131}:\\ \;\;\;\;1\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a)))
        (t_2
         (/
          x
          (+
           x
           (*
            y
            (exp
             (*
              2.0
              (*
               b
               (- (/ 0.6666666666666666 t) (+ a 0.8333333333333334))))))))))
   (if (<= b -1.25e+76)
     t_2
     (if (<= b -5.8e+26)
       1.0
       (if (<= b -2.7e-119)
         t_2
         (if (<= b 2.4e-226)
           (/ x (+ x (* y (exp (* 2.0 (* c (+ 0.8333333333333334 a)))))))
           (if (<= b 1.55e-83)
             (/ x (+ x (* y (+ 1.0 (* b (* 2.0 (+ (* b (* t_1 t_1)) t_1)))))))
             (if (<= b 4.5e+131) 1.0 t_2))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double t_2 = x / (x + (y * exp((2.0 * (b * ((0.6666666666666666 / t) - (a + 0.8333333333333334)))))));
	double tmp;
	if (b <= -1.25e+76) {
		tmp = t_2;
	} else if (b <= -5.8e+26) {
		tmp = 1.0;
	} else if (b <= -2.7e-119) {
		tmp = t_2;
	} else if (b <= 2.4e-226) {
		tmp = x / (x + (y * exp((2.0 * (c * (0.8333333333333334 + a))))));
	} else if (b <= 1.55e-83) {
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))));
	} else if (b <= 4.5e+131) {
		tmp = 1.0;
	} else {
		tmp = t_2;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (0.8333333333333334d0 + a)
    t_2 = x / (x + (y * exp((2.0d0 * (b * ((0.6666666666666666d0 / t) - (a + 0.8333333333333334d0)))))))
    if (b <= (-1.25d+76)) then
        tmp = t_2
    else if (b <= (-5.8d+26)) then
        tmp = 1.0d0
    else if (b <= (-2.7d-119)) then
        tmp = t_2
    else if (b <= 2.4d-226) then
        tmp = x / (x + (y * exp((2.0d0 * (c * (0.8333333333333334d0 + a))))))
    else if (b <= 1.55d-83) then
        tmp = x / (x + (y * (1.0d0 + (b * (2.0d0 * ((b * (t_1 * t_1)) + t_1))))))
    else if (b <= 4.5d+131) then
        tmp = 1.0d0
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double t_2 = x / (x + (y * Math.exp((2.0 * (b * ((0.6666666666666666 / t) - (a + 0.8333333333333334)))))));
	double tmp;
	if (b <= -1.25e+76) {
		tmp = t_2;
	} else if (b <= -5.8e+26) {
		tmp = 1.0;
	} else if (b <= -2.7e-119) {
		tmp = t_2;
	} else if (b <= 2.4e-226) {
		tmp = x / (x + (y * Math.exp((2.0 * (c * (0.8333333333333334 + a))))));
	} else if (b <= 1.55e-83) {
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))));
	} else if (b <= 4.5e+131) {
		tmp = 1.0;
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a)
	t_2 = x / (x + (y * math.exp((2.0 * (b * ((0.6666666666666666 / t) - (a + 0.8333333333333334)))))))
	tmp = 0
	if b <= -1.25e+76:
		tmp = t_2
	elif b <= -5.8e+26:
		tmp = 1.0
	elif b <= -2.7e-119:
		tmp = t_2
	elif b <= 2.4e-226:
		tmp = x / (x + (y * math.exp((2.0 * (c * (0.8333333333333334 + a))))))
	elif b <= 1.55e-83:
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))))
	elif b <= 4.5e+131:
		tmp = 1.0
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a))
	t_2 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(b * Float64(Float64(0.6666666666666666 / t) - Float64(a + 0.8333333333333334))))))))
	tmp = 0.0
	if (b <= -1.25e+76)
		tmp = t_2;
	elseif (b <= -5.8e+26)
		tmp = 1.0;
	elseif (b <= -2.7e-119)
		tmp = t_2;
	elseif (b <= 2.4e-226)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(c * Float64(0.8333333333333334 + a)))))));
	elseif (b <= 1.55e-83)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(b * Float64(2.0 * Float64(Float64(b * Float64(t_1 * t_1)) + t_1)))))));
	elseif (b <= 4.5e+131)
		tmp = 1.0;
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	t_2 = x / (x + (y * exp((2.0 * (b * ((0.6666666666666666 / t) - (a + 0.8333333333333334)))))));
	tmp = 0.0;
	if (b <= -1.25e+76)
		tmp = t_2;
	elseif (b <= -5.8e+26)
		tmp = 1.0;
	elseif (b <= -2.7e-119)
		tmp = t_2;
	elseif (b <= 2.4e-226)
		tmp = x / (x + (y * exp((2.0 * (c * (0.8333333333333334 + a))))));
	elseif (b <= 1.55e-83)
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))));
	elseif (b <= 4.5e+131)
		tmp = 1.0;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(b * N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(a + 0.8333333333333334), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[b, -1.25e+76], t$95$2, If[LessEqual[b, -5.8e+26], 1.0, If[LessEqual[b, -2.7e-119], t$95$2, If[LessEqual[b, 2.4e-226], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(c * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, 1.55e-83], N[(x / N[(x + N[(y * N[(1.0 + N[(b * N[(2.0 * N[(N[(b * N[(t$95$1 * t$95$1), $MachinePrecision]), $MachinePrecision] + t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, 4.5e+131], 1.0, t$95$2]]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\
t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot \left(\frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\right)\right)}}\\
\mathbf{if}\;b \leq -1.25 \cdot 10^{+76}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;b \leq -5.8 \cdot 10^{+26}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq -2.7 \cdot 10^{-119}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;b \leq 2.4 \cdot 10^{-226}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(c \cdot \left(0.8333333333333334 + a\right)\right)}}\\

\mathbf{elif}\;b \leq 1.55 \cdot 10^{-83}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot \left(b \cdot \left(t\_1 \cdot t\_1\right) + t\_1\right)\right)\right)}\\

\mathbf{elif}\;b \leq 4.5 \cdot 10^{+131}:\\
\;\;\;\;1\\

\mathbf{else}:\\
\;\;\;\;t\_2\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if b < -1.24999999999999998e76 or -5.8e26 < b < -2.70000000000000027e-119 or 4.5000000000000002e131 < b

    1. Initial program 93.6%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -1.24999999999999998e76 < b < -5.8e26 or 1.54999999999999996e-83 < b < 4.5000000000000002e131

    1. Initial program 89.6%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -2.70000000000000027e-119 < b < 2.4e-226

    1. Initial program 98.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]

    if 2.4e-226 < b < 1.54999999999999996e-83

    1. Initial program 96.3%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 6: 62.0% accurate, 1.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\ t_2 := t\_1 \cdot t\_1\\ t_3 := \frac{x}{y \cdot e^{-2 \cdot \left(b \cdot \left(0.8333333333333334 + a\right)\right)} + x}\\ t_4 := \frac{x}{x + y \cdot e^{2 \cdot \left(c \cdot \left(0.8333333333333334 + a\right)\right)}}\\ \mathbf{if}\;t \leq -8.5 \cdot 10^{+24}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;t \leq -7 \cdot 10^{-275}:\\ \;\;\;\;t\_4\\ \mathbf{elif}\;t \leq 4.4 \cdot 10^{-111}:\\ \;\;\;\;1\\ \mathbf{elif}\;t \leq 4.6 \cdot 10^{-104}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot t\_1 + b \cdot \left(\left(1.3333333333333333 \cdot b\right) \cdot \left(t\_1 \cdot t\_2\right) + 2 \cdot t\_2\right)\right)\right)}\\ \mathbf{elif}\;t \leq 4.05 \cdot 10^{-38}:\\ \;\;\;\;1\\ \mathbf{elif}\;t \leq 3.3 \cdot 10^{+141}:\\ \;\;\;\;t\_3\\ \mathbf{else}:\\ \;\;\;\;t\_4\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a)))
        (t_2 (* t_1 t_1))
        (t_3 (/ x (+ (* y (exp (* -2.0 (* b (+ 0.8333333333333334 a))))) x)))
        (t_4 (/ x (+ x (* y (exp (* 2.0 (* c (+ 0.8333333333333334 a)))))))))
   (if (<= t -8.5e+24)
     t_3
     (if (<= t -7e-275)
       t_4
       (if (<= t 4.4e-111)
         1.0
         (if (<= t 4.6e-104)
           (/
            x
            (+
             x
             (*
              y
              (+
               1.0
               (*
                b
                (+
                 (* 2.0 t_1)
                 (*
                  b
                  (+
                   (* (* 1.3333333333333333 b) (* t_1 t_2))
                   (* 2.0 t_2)))))))))
           (if (<= t 4.05e-38) 1.0 (if (<= t 3.3e+141) t_3 t_4))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double t_2 = t_1 * t_1;
	double t_3 = x / ((y * exp((-2.0 * (b * (0.8333333333333334 + a))))) + x);
	double t_4 = x / (x + (y * exp((2.0 * (c * (0.8333333333333334 + a))))));
	double tmp;
	if (t <= -8.5e+24) {
		tmp = t_3;
	} else if (t <= -7e-275) {
		tmp = t_4;
	} else if (t <= 4.4e-111) {
		tmp = 1.0;
	} else if (t <= 4.6e-104) {
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))));
	} else if (t <= 4.05e-38) {
		tmp = 1.0;
	} else if (t <= 3.3e+141) {
		tmp = t_3;
	} else {
		tmp = t_4;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: t_3
    real(8) :: t_4
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (0.8333333333333334d0 + a)
    t_2 = t_1 * t_1
    t_3 = x / ((y * exp(((-2.0d0) * (b * (0.8333333333333334d0 + a))))) + x)
    t_4 = x / (x + (y * exp((2.0d0 * (c * (0.8333333333333334d0 + a))))))
    if (t <= (-8.5d+24)) then
        tmp = t_3
    else if (t <= (-7d-275)) then
        tmp = t_4
    else if (t <= 4.4d-111) then
        tmp = 1.0d0
    else if (t <= 4.6d-104) then
        tmp = x / (x + (y * (1.0d0 + (b * ((2.0d0 * t_1) + (b * (((1.3333333333333333d0 * b) * (t_1 * t_2)) + (2.0d0 * t_2))))))))
    else if (t <= 4.05d-38) then
        tmp = 1.0d0
    else if (t <= 3.3d+141) then
        tmp = t_3
    else
        tmp = t_4
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double t_2 = t_1 * t_1;
	double t_3 = x / ((y * Math.exp((-2.0 * (b * (0.8333333333333334 + a))))) + x);
	double t_4 = x / (x + (y * Math.exp((2.0 * (c * (0.8333333333333334 + a))))));
	double tmp;
	if (t <= -8.5e+24) {
		tmp = t_3;
	} else if (t <= -7e-275) {
		tmp = t_4;
	} else if (t <= 4.4e-111) {
		tmp = 1.0;
	} else if (t <= 4.6e-104) {
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))));
	} else if (t <= 4.05e-38) {
		tmp = 1.0;
	} else if (t <= 3.3e+141) {
		tmp = t_3;
	} else {
		tmp = t_4;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a)
	t_2 = t_1 * t_1
	t_3 = x / ((y * math.exp((-2.0 * (b * (0.8333333333333334 + a))))) + x)
	t_4 = x / (x + (y * math.exp((2.0 * (c * (0.8333333333333334 + a))))))
	tmp = 0
	if t <= -8.5e+24:
		tmp = t_3
	elif t <= -7e-275:
		tmp = t_4
	elif t <= 4.4e-111:
		tmp = 1.0
	elif t <= 4.6e-104:
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))))
	elif t <= 4.05e-38:
		tmp = 1.0
	elif t <= 3.3e+141:
		tmp = t_3
	else:
		tmp = t_4
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a))
	t_2 = Float64(t_1 * t_1)
	t_3 = Float64(x / Float64(Float64(y * exp(Float64(-2.0 * Float64(b * Float64(0.8333333333333334 + a))))) + x))
	t_4 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(c * Float64(0.8333333333333334 + a)))))))
	tmp = 0.0
	if (t <= -8.5e+24)
		tmp = t_3;
	elseif (t <= -7e-275)
		tmp = t_4;
	elseif (t <= 4.4e-111)
		tmp = 1.0;
	elseif (t <= 4.6e-104)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(b * Float64(Float64(2.0 * t_1) + Float64(b * Float64(Float64(Float64(1.3333333333333333 * b) * Float64(t_1 * t_2)) + Float64(2.0 * t_2)))))))));
	elseif (t <= 4.05e-38)
		tmp = 1.0;
	elseif (t <= 3.3e+141)
		tmp = t_3;
	else
		tmp = t_4;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	t_2 = t_1 * t_1;
	t_3 = x / ((y * exp((-2.0 * (b * (0.8333333333333334 + a))))) + x);
	t_4 = x / (x + (y * exp((2.0 * (c * (0.8333333333333334 + a))))));
	tmp = 0.0;
	if (t <= -8.5e+24)
		tmp = t_3;
	elseif (t <= -7e-275)
		tmp = t_4;
	elseif (t <= 4.4e-111)
		tmp = 1.0;
	elseif (t <= 4.6e-104)
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))));
	elseif (t <= 4.05e-38)
		tmp = 1.0;
	elseif (t <= 3.3e+141)
		tmp = t_3;
	else
		tmp = t_4;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(t$95$1 * t$95$1), $MachinePrecision]}, Block[{t$95$3 = N[(x / N[(N[(y * N[Exp[N[(-2.0 * N[(b * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$4 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(c * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t, -8.5e+24], t$95$3, If[LessEqual[t, -7e-275], t$95$4, If[LessEqual[t, 4.4e-111], 1.0, If[LessEqual[t, 4.6e-104], N[(x / N[(x + N[(y * N[(1.0 + N[(b * N[(N[(2.0 * t$95$1), $MachinePrecision] + N[(b * N[(N[(N[(1.3333333333333333 * b), $MachinePrecision] * N[(t$95$1 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(2.0 * t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[t, 4.05e-38], 1.0, If[LessEqual[t, 3.3e+141], t$95$3, t$95$4]]]]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\
t_2 := t\_1 \cdot t\_1\\
t_3 := \frac{x}{y \cdot e^{-2 \cdot \left(b \cdot \left(0.8333333333333334 + a\right)\right)} + x}\\
t_4 := \frac{x}{x + y \cdot e^{2 \cdot \left(c \cdot \left(0.8333333333333334 + a\right)\right)}}\\
\mathbf{if}\;t \leq -8.5 \cdot 10^{+24}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;t \leq -7 \cdot 10^{-275}:\\
\;\;\;\;t\_4\\

\mathbf{elif}\;t \leq 4.4 \cdot 10^{-111}:\\
\;\;\;\;1\\

\mathbf{elif}\;t \leq 4.6 \cdot 10^{-104}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot t\_1 + b \cdot \left(\left(1.3333333333333333 \cdot b\right) \cdot \left(t\_1 \cdot t\_2\right) + 2 \cdot t\_2\right)\right)\right)}\\

\mathbf{elif}\;t \leq 4.05 \cdot 10^{-38}:\\
\;\;\;\;1\\

\mathbf{elif}\;t \leq 3.3 \cdot 10^{+141}:\\
\;\;\;\;t\_3\\

\mathbf{else}:\\
\;\;\;\;t\_4\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if t < -8.49999999999999959e24 or 4.0499999999999998e-38 < t < 3.2999999999999997e141

    1. Initial program 98.8%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]

    if -8.49999999999999959e24 < t < -6.99999999999999938e-275 or 3.2999999999999997e141 < t

    1. Initial program 92.3%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]

    if -6.99999999999999938e-275 < t < 4.4e-111 or 4.5999999999999999e-104 < t < 4.0499999999999998e-38

    1. Initial program 91.3%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if 4.4e-111 < t < 4.5999999999999999e-104

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 7: 60.1% accurate, 1.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\ t_2 := t\_1 \cdot t\_1\\ t_3 := \frac{x}{x + y \cdot e^{2 \cdot \left(c \cdot \left(0.8333333333333334 + a\right)\right)}}\\ \mathbf{if}\;t \leq -3.15 \cdot 10^{-263}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;t \leq 5.1 \cdot 10^{-111}:\\ \;\;\;\;1\\ \mathbf{elif}\;t \leq 2.3 \cdot 10^{-104}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot t\_1 + b \cdot \left(\left(1.3333333333333333 \cdot b\right) \cdot \left(t\_1 \cdot t\_2\right) + 2 \cdot t\_2\right)\right)\right)}\\ \mathbf{elif}\;t \leq 2.4 \cdot 10^{-39}:\\ \;\;\;\;1\\ \mathbf{elif}\;t \leq 2.8 \cdot 10^{+80}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot \left(b \cdot t\_2 + t\_1\right)\right)\right)}\\ \mathbf{else}:\\ \;\;\;\;t\_3\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a)))
        (t_2 (* t_1 t_1))
        (t_3 (/ x (+ x (* y (exp (* 2.0 (* c (+ 0.8333333333333334 a)))))))))
   (if (<= t -3.15e-263)
     t_3
     (if (<= t 5.1e-111)
       1.0
       (if (<= t 2.3e-104)
         (/
          x
          (+
           x
           (*
            y
            (+
             1.0
             (*
              b
              (+
               (* 2.0 t_1)
               (*
                b
                (+ (* (* 1.3333333333333333 b) (* t_1 t_2)) (* 2.0 t_2)))))))))
         (if (<= t 2.4e-39)
           1.0
           (if (<= t 2.8e+80)
             (/ x (+ x (* y (+ 1.0 (* b (* 2.0 (+ (* b t_2) t_1)))))))
             t_3)))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double t_2 = t_1 * t_1;
	double t_3 = x / (x + (y * exp((2.0 * (c * (0.8333333333333334 + a))))));
	double tmp;
	if (t <= -3.15e-263) {
		tmp = t_3;
	} else if (t <= 5.1e-111) {
		tmp = 1.0;
	} else if (t <= 2.3e-104) {
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))));
	} else if (t <= 2.4e-39) {
		tmp = 1.0;
	} else if (t <= 2.8e+80) {
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * t_2) + t_1))))));
	} else {
		tmp = t_3;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: t_3
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (0.8333333333333334d0 + a)
    t_2 = t_1 * t_1
    t_3 = x / (x + (y * exp((2.0d0 * (c * (0.8333333333333334d0 + a))))))
    if (t <= (-3.15d-263)) then
        tmp = t_3
    else if (t <= 5.1d-111) then
        tmp = 1.0d0
    else if (t <= 2.3d-104) then
        tmp = x / (x + (y * (1.0d0 + (b * ((2.0d0 * t_1) + (b * (((1.3333333333333333d0 * b) * (t_1 * t_2)) + (2.0d0 * t_2))))))))
    else if (t <= 2.4d-39) then
        tmp = 1.0d0
    else if (t <= 2.8d+80) then
        tmp = x / (x + (y * (1.0d0 + (b * (2.0d0 * ((b * t_2) + t_1))))))
    else
        tmp = t_3
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double t_2 = t_1 * t_1;
	double t_3 = x / (x + (y * Math.exp((2.0 * (c * (0.8333333333333334 + a))))));
	double tmp;
	if (t <= -3.15e-263) {
		tmp = t_3;
	} else if (t <= 5.1e-111) {
		tmp = 1.0;
	} else if (t <= 2.3e-104) {
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))));
	} else if (t <= 2.4e-39) {
		tmp = 1.0;
	} else if (t <= 2.8e+80) {
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * t_2) + t_1))))));
	} else {
		tmp = t_3;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a)
	t_2 = t_1 * t_1
	t_3 = x / (x + (y * math.exp((2.0 * (c * (0.8333333333333334 + a))))))
	tmp = 0
	if t <= -3.15e-263:
		tmp = t_3
	elif t <= 5.1e-111:
		tmp = 1.0
	elif t <= 2.3e-104:
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))))
	elif t <= 2.4e-39:
		tmp = 1.0
	elif t <= 2.8e+80:
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * t_2) + t_1))))))
	else:
		tmp = t_3
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a))
	t_2 = Float64(t_1 * t_1)
	t_3 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(c * Float64(0.8333333333333334 + a)))))))
	tmp = 0.0
	if (t <= -3.15e-263)
		tmp = t_3;
	elseif (t <= 5.1e-111)
		tmp = 1.0;
	elseif (t <= 2.3e-104)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(b * Float64(Float64(2.0 * t_1) + Float64(b * Float64(Float64(Float64(1.3333333333333333 * b) * Float64(t_1 * t_2)) + Float64(2.0 * t_2)))))))));
	elseif (t <= 2.4e-39)
		tmp = 1.0;
	elseif (t <= 2.8e+80)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(b * Float64(2.0 * Float64(Float64(b * t_2) + t_1)))))));
	else
		tmp = t_3;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	t_2 = t_1 * t_1;
	t_3 = x / (x + (y * exp((2.0 * (c * (0.8333333333333334 + a))))));
	tmp = 0.0;
	if (t <= -3.15e-263)
		tmp = t_3;
	elseif (t <= 5.1e-111)
		tmp = 1.0;
	elseif (t <= 2.3e-104)
		tmp = x / (x + (y * (1.0 + (b * ((2.0 * t_1) + (b * (((1.3333333333333333 * b) * (t_1 * t_2)) + (2.0 * t_2))))))));
	elseif (t <= 2.4e-39)
		tmp = 1.0;
	elseif (t <= 2.8e+80)
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * t_2) + t_1))))));
	else
		tmp = t_3;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(t$95$1 * t$95$1), $MachinePrecision]}, Block[{t$95$3 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(c * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t, -3.15e-263], t$95$3, If[LessEqual[t, 5.1e-111], 1.0, If[LessEqual[t, 2.3e-104], N[(x / N[(x + N[(y * N[(1.0 + N[(b * N[(N[(2.0 * t$95$1), $MachinePrecision] + N[(b * N[(N[(N[(1.3333333333333333 * b), $MachinePrecision] * N[(t$95$1 * t$95$2), $MachinePrecision]), $MachinePrecision] + N[(2.0 * t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[t, 2.4e-39], 1.0, If[LessEqual[t, 2.8e+80], N[(x / N[(x + N[(y * N[(1.0 + N[(b * N[(2.0 * N[(N[(b * t$95$2), $MachinePrecision] + t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$3]]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\
t_2 := t\_1 \cdot t\_1\\
t_3 := \frac{x}{x + y \cdot e^{2 \cdot \left(c \cdot \left(0.8333333333333334 + a\right)\right)}}\\
\mathbf{if}\;t \leq -3.15 \cdot 10^{-263}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;t \leq 5.1 \cdot 10^{-111}:\\
\;\;\;\;1\\

\mathbf{elif}\;t \leq 2.3 \cdot 10^{-104}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot t\_1 + b \cdot \left(\left(1.3333333333333333 \cdot b\right) \cdot \left(t\_1 \cdot t\_2\right) + 2 \cdot t\_2\right)\right)\right)}\\

\mathbf{elif}\;t \leq 2.4 \cdot 10^{-39}:\\
\;\;\;\;1\\

\mathbf{elif}\;t \leq 2.8 \cdot 10^{+80}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot \left(b \cdot t\_2 + t\_1\right)\right)\right)}\\

\mathbf{else}:\\
\;\;\;\;t\_3\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if t < -3.14999999999999986e-263 or 2.79999999999999984e80 < t

    1. Initial program 93.6%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]

    if -3.14999999999999986e-263 < t < 5.10000000000000032e-111 or 2.2999999999999999e-104 < t < 2.40000000000000016e-39

    1. Initial program 91.3%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if 5.10000000000000032e-111 < t < 2.2999999999999999e-104

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]

    if 2.40000000000000016e-39 < t < 2.79999999999999984e80

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 8: 79.4% accurate, 1.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\\ t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot t\_1\right)}}\\ \mathbf{if}\;c \leq -5 \cdot 10^{+134}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;c \leq 1.45 \cdot 10^{+33}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot t\_1\right)}}\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ a 0.8333333333333334)))
        (t_2 (/ x (+ x (* y (exp (* 2.0 (- 0.0 (* c t_1)))))))))
   (if (<= c -5e+134)
     t_2
     (if (<= c 1.45e+33) (/ x (+ x (* y (exp (* 2.0 (* b t_1)))))) t_2))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	double t_2 = x / (x + (y * exp((2.0 * (0.0 - (c * t_1))))));
	double tmp;
	if (c <= -5e+134) {
		tmp = t_2;
	} else if (c <= 1.45e+33) {
		tmp = x / (x + (y * exp((2.0 * (b * t_1)))));
	} else {
		tmp = t_2;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (a + 0.8333333333333334d0)
    t_2 = x / (x + (y * exp((2.0d0 * (0.0d0 - (c * t_1))))))
    if (c <= (-5d+134)) then
        tmp = t_2
    else if (c <= 1.45d+33) then
        tmp = x / (x + (y * exp((2.0d0 * (b * t_1)))))
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	double t_2 = x / (x + (y * Math.exp((2.0 * (0.0 - (c * t_1))))));
	double tmp;
	if (c <= -5e+134) {
		tmp = t_2;
	} else if (c <= 1.45e+33) {
		tmp = x / (x + (y * Math.exp((2.0 * (b * t_1)))));
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334)
	t_2 = x / (x + (y * math.exp((2.0 * (0.0 - (c * t_1))))))
	tmp = 0
	if c <= -5e+134:
		tmp = t_2
	elif c <= 1.45e+33:
		tmp = x / (x + (y * math.exp((2.0 * (b * t_1)))))
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(a + 0.8333333333333334))
	t_2 = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(0.0 - Float64(c * t_1)))))))
	tmp = 0.0
	if (c <= -5e+134)
		tmp = t_2;
	elseif (c <= 1.45e+33)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(b * t_1))))));
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (a + 0.8333333333333334);
	t_2 = x / (x + (y * exp((2.0 * (0.0 - (c * t_1))))));
	tmp = 0.0;
	if (c <= -5e+134)
		tmp = t_2;
	elseif (c <= 1.45e+33)
		tmp = x / (x + (y * exp((2.0 * (b * t_1)))));
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(a + 0.8333333333333334), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(0.0 - N[(c * t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[c, -5e+134], t$95$2, If[LessEqual[c, 1.45e+33], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(b * t$95$1), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$2]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(a + 0.8333333333333334\right)\\
t_2 := \frac{x}{x + y \cdot e^{2 \cdot \left(0 - c \cdot t\_1\right)}}\\
\mathbf{if}\;c \leq -5 \cdot 10^{+134}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;c \leq 1.45 \cdot 10^{+33}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(b \cdot t\_1\right)}}\\

\mathbf{else}:\\
\;\;\;\;t\_2\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if c < -4.99999999999999981e134 or 1.45000000000000012e33 < c

    1. Initial program 89.9%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -4.99999999999999981e134 < c < 1.45000000000000012e33

    1. Initial program 96.9%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 9: 55.3% accurate, 3.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\ \mathbf{if}\;b \leq -1.2 \cdot 10^{+76}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\ \mathbf{elif}\;b \leq -5.8 \cdot 10^{-29}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq -6.2 \cdot 10^{-177}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + c \cdot \left(-2 \cdot t\_1 + c \cdot \left(1.3333333333333333 \cdot \left(\left(a \cdot \left(a \cdot a\right)\right) \cdot c\right)\right)\right)\right)}\\ \mathbf{elif}\;b \leq 5.2 \cdot 10^{-269}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq 1.15 \cdot 10^{-83}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot \left(b \cdot \left(t\_1 \cdot t\_1\right) + t\_1\right)\right)\right)}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a))))
   (if (<= b -1.2e+76)
     (/ x (+ x (* y (* 2.0 (* (* b a) (* b a))))))
     (if (<= b -5.8e-29)
       1.0
       (if (<= b -6.2e-177)
         (/
          x
          (+
           x
           (*
            y
            (+
             1.0
             (*
              c
              (+
               (* -2.0 t_1)
               (* c (* 1.3333333333333333 (* (* a (* a a)) c)))))))))
         (if (<= b 5.2e-269)
           1.0
           (if (<= b 1.15e-83)
             (/ x (+ x (* y (+ 1.0 (* b (* 2.0 (+ (* b (* t_1 t_1)) t_1)))))))
             1.0)))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double tmp;
	if (b <= -1.2e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -5.8e-29) {
		tmp = 1.0;
	} else if (b <= -6.2e-177) {
		tmp = x / (x + (y * (1.0 + (c * ((-2.0 * t_1) + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))));
	} else if (b <= 5.2e-269) {
		tmp = 1.0;
	} else if (b <= 1.15e-83) {
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (0.6666666666666666d0 / t) - (0.8333333333333334d0 + a)
    if (b <= (-1.2d+76)) then
        tmp = x / (x + (y * (2.0d0 * ((b * a) * (b * a)))))
    else if (b <= (-5.8d-29)) then
        tmp = 1.0d0
    else if (b <= (-6.2d-177)) then
        tmp = x / (x + (y * (1.0d0 + (c * (((-2.0d0) * t_1) + (c * (1.3333333333333333d0 * ((a * (a * a)) * c))))))))
    else if (b <= 5.2d-269) then
        tmp = 1.0d0
    else if (b <= 1.15d-83) then
        tmp = x / (x + (y * (1.0d0 + (b * (2.0d0 * ((b * (t_1 * t_1)) + t_1))))))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	double tmp;
	if (b <= -1.2e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -5.8e-29) {
		tmp = 1.0;
	} else if (b <= -6.2e-177) {
		tmp = x / (x + (y * (1.0 + (c * ((-2.0 * t_1) + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))));
	} else if (b <= 5.2e-269) {
		tmp = 1.0;
	} else if (b <= 1.15e-83) {
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a)
	tmp = 0
	if b <= -1.2e+76:
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))))
	elif b <= -5.8e-29:
		tmp = 1.0
	elif b <= -6.2e-177:
		tmp = x / (x + (y * (1.0 + (c * ((-2.0 * t_1) + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))))
	elif b <= 5.2e-269:
		tmp = 1.0
	elif b <= 1.15e-83:
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a))
	tmp = 0.0
	if (b <= -1.2e+76)
		tmp = Float64(x / Float64(x + Float64(y * Float64(2.0 * Float64(Float64(b * a) * Float64(b * a))))));
	elseif (b <= -5.8e-29)
		tmp = 1.0;
	elseif (b <= -6.2e-177)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(c * Float64(Float64(-2.0 * t_1) + Float64(c * Float64(1.3333333333333333 * Float64(Float64(a * Float64(a * a)) * c)))))))));
	elseif (b <= 5.2e-269)
		tmp = 1.0;
	elseif (b <= 1.15e-83)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(b * Float64(2.0 * Float64(Float64(b * Float64(t_1 * t_1)) + t_1)))))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (0.6666666666666666 / t) - (0.8333333333333334 + a);
	tmp = 0.0;
	if (b <= -1.2e+76)
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	elseif (b <= -5.8e-29)
		tmp = 1.0;
	elseif (b <= -6.2e-177)
		tmp = x / (x + (y * (1.0 + (c * ((-2.0 * t_1) + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))));
	elseif (b <= 5.2e-269)
		tmp = 1.0;
	elseif (b <= 1.15e-83)
		tmp = x / (x + (y * (1.0 + (b * (2.0 * ((b * (t_1 * t_1)) + t_1))))));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[b, -1.2e+76], N[(x / N[(x + N[(y * N[(2.0 * N[(N[(b * a), $MachinePrecision] * N[(b * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, -5.8e-29], 1.0, If[LessEqual[b, -6.2e-177], N[(x / N[(x + N[(y * N[(1.0 + N[(c * N[(N[(-2.0 * t$95$1), $MachinePrecision] + N[(c * N[(1.3333333333333333 * N[(N[(a * N[(a * a), $MachinePrecision]), $MachinePrecision] * c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, 5.2e-269], 1.0, If[LessEqual[b, 1.15e-83], N[(x / N[(x + N[(y * N[(1.0 + N[(b * N[(2.0 * N[(N[(b * N[(t$95$1 * t$95$1), $MachinePrecision]), $MachinePrecision] + t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\\
\mathbf{if}\;b \leq -1.2 \cdot 10^{+76}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\

\mathbf{elif}\;b \leq -5.8 \cdot 10^{-29}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq -6.2 \cdot 10^{-177}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + c \cdot \left(-2 \cdot t\_1 + c \cdot \left(1.3333333333333333 \cdot \left(\left(a \cdot \left(a \cdot a\right)\right) \cdot c\right)\right)\right)\right)}\\

\mathbf{elif}\;b \leq 5.2 \cdot 10^{-269}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq 1.15 \cdot 10^{-83}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + b \cdot \left(2 \cdot \left(b \cdot \left(t\_1 \cdot t\_1\right) + t\_1\right)\right)\right)}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if b < -1.2e76

    1. Initial program 90.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -1.2e76 < b < -5.80000000000000048e-29 or -6.20000000000000036e-177 < b < 5.2e-269 or 1.14999999999999995e-83 < b

    1. Initial program 93.3%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -5.80000000000000048e-29 < b < -6.20000000000000036e-177

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if 5.2e-269 < b < 1.14999999999999995e-83

    1. Initial program 97.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 10: 49.0% accurate, 3.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{x}{x + y \cdot \left(1 + c \cdot \left(-2 \cdot \left(\frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\right) + c \cdot \left(-0.3950617283950617 \cdot \frac{c}{t \cdot \left(t \cdot t\right)}\right)\right)\right)}\\ \mathbf{if}\;x \leq -9.5 \cdot 10^{+159}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{elif}\;x \leq -1.9 \cdot 10^{+22}:\\ \;\;\;\;\frac{x}{x + y \cdot \frac{\left(b \cdot b\right) \cdot 0.8888888888888888}{t \cdot t}}\\ \mathbf{elif}\;x \leq -5.8 \cdot 10^{-161}:\\ \;\;\;\;1\\ \mathbf{elif}\;x \leq -1.8 \cdot 10^{-289}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x \leq 5.1 \cdot 10^{-213}:\\ \;\;\;\;1\\ \mathbf{elif}\;x \leq 7.5 \cdot 10^{-153}:\\ \;\;\;\;t\_1\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1
         (/
          x
          (+
           x
           (*
            y
            (+
             1.0
             (*
              c
              (+
               (* -2.0 (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a)))
               (* c (* -0.3950617283950617 (/ c (* t (* t t)))))))))))))
   (if (<= x -9.5e+159)
     (/ x (* y (+ 1.0 (/ x y))))
     (if (<= x -1.9e+22)
       (/ x (+ x (* y (/ (* (* b b) 0.8888888888888888) (* t t)))))
       (if (<= x -5.8e-161)
         1.0
         (if (<= x -1.8e-289)
           t_1
           (if (<= x 5.1e-213) 1.0 (if (<= x 7.5e-153) t_1 1.0))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = x / (x + (y * (1.0 + (c * ((-2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a))) + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))));
	double tmp;
	if (x <= -9.5e+159) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -1.9e+22) {
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))));
	} else if (x <= -5.8e-161) {
		tmp = 1.0;
	} else if (x <= -1.8e-289) {
		tmp = t_1;
	} else if (x <= 5.1e-213) {
		tmp = 1.0;
	} else if (x <= 7.5e-153) {
		tmp = t_1;
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x / (x + (y * (1.0d0 + (c * (((-2.0d0) * ((0.6666666666666666d0 / t) - (0.8333333333333334d0 + a))) + (c * ((-0.3950617283950617d0) * (c / (t * (t * t))))))))))
    if (x <= (-9.5d+159)) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else if (x <= (-1.9d+22)) then
        tmp = x / (x + (y * (((b * b) * 0.8888888888888888d0) / (t * t))))
    else if (x <= (-5.8d-161)) then
        tmp = 1.0d0
    else if (x <= (-1.8d-289)) then
        tmp = t_1
    else if (x <= 5.1d-213) then
        tmp = 1.0d0
    else if (x <= 7.5d-153) then
        tmp = t_1
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = x / (x + (y * (1.0 + (c * ((-2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a))) + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))));
	double tmp;
	if (x <= -9.5e+159) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -1.9e+22) {
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))));
	} else if (x <= -5.8e-161) {
		tmp = 1.0;
	} else if (x <= -1.8e-289) {
		tmp = t_1;
	} else if (x <= 5.1e-213) {
		tmp = 1.0;
	} else if (x <= 7.5e-153) {
		tmp = t_1;
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = x / (x + (y * (1.0 + (c * ((-2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a))) + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))))
	tmp = 0
	if x <= -9.5e+159:
		tmp = x / (y * (1.0 + (x / y)))
	elif x <= -1.9e+22:
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))))
	elif x <= -5.8e-161:
		tmp = 1.0
	elif x <= -1.8e-289:
		tmp = t_1
	elif x <= 5.1e-213:
		tmp = 1.0
	elif x <= 7.5e-153:
		tmp = t_1
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(c * Float64(Float64(-2.0 * Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a))) + Float64(c * Float64(-0.3950617283950617 * Float64(c / Float64(t * Float64(t * t)))))))))))
	tmp = 0.0
	if (x <= -9.5e+159)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	elseif (x <= -1.9e+22)
		tmp = Float64(x / Float64(x + Float64(y * Float64(Float64(Float64(b * b) * 0.8888888888888888) / Float64(t * t)))));
	elseif (x <= -5.8e-161)
		tmp = 1.0;
	elseif (x <= -1.8e-289)
		tmp = t_1;
	elseif (x <= 5.1e-213)
		tmp = 1.0;
	elseif (x <= 7.5e-153)
		tmp = t_1;
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = x / (x + (y * (1.0 + (c * ((-2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a))) + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))));
	tmp = 0.0;
	if (x <= -9.5e+159)
		tmp = x / (y * (1.0 + (x / y)));
	elseif (x <= -1.9e+22)
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))));
	elseif (x <= -5.8e-161)
		tmp = 1.0;
	elseif (x <= -1.8e-289)
		tmp = t_1;
	elseif (x <= 5.1e-213)
		tmp = 1.0;
	elseif (x <= 7.5e-153)
		tmp = t_1;
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(x / N[(x + N[(y * N[(1.0 + N[(c * N[(N[(-2.0 * N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(c * N[(-0.3950617283950617 * N[(c / N[(t * N[(t * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -9.5e+159], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -1.9e+22], N[(x / N[(x + N[(y * N[(N[(N[(b * b), $MachinePrecision] * 0.8888888888888888), $MachinePrecision] / N[(t * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -5.8e-161], 1.0, If[LessEqual[x, -1.8e-289], t$95$1, If[LessEqual[x, 5.1e-213], 1.0, If[LessEqual[x, 7.5e-153], t$95$1, 1.0]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{x}{x + y \cdot \left(1 + c \cdot \left(-2 \cdot \left(\frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\right) + c \cdot \left(-0.3950617283950617 \cdot \frac{c}{t \cdot \left(t \cdot t\right)}\right)\right)\right)}\\
\mathbf{if}\;x \leq -9.5 \cdot 10^{+159}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{elif}\;x \leq -1.9 \cdot 10^{+22}:\\
\;\;\;\;\frac{x}{x + y \cdot \frac{\left(b \cdot b\right) \cdot 0.8888888888888888}{t \cdot t}}\\

\mathbf{elif}\;x \leq -5.8 \cdot 10^{-161}:\\
\;\;\;\;1\\

\mathbf{elif}\;x \leq -1.8 \cdot 10^{-289}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;x \leq 5.1 \cdot 10^{-213}:\\
\;\;\;\;1\\

\mathbf{elif}\;x \leq 7.5 \cdot 10^{-153}:\\
\;\;\;\;t\_1\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if x < -9.5000000000000003e159

    1. Initial program 89.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -9.5000000000000003e159 < x < -1.9000000000000002e22

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -1.9000000000000002e22 < x < -5.8e-161 or -1.8e-289 < x < 5.0999999999999997e-213 or 7.5e-153 < x

    1. Initial program 96.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -5.8e-161 < x < -1.8e-289 or 5.0999999999999997e-213 < x < 7.5e-153

    1. Initial program 88.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 11: 55.1% accurate, 4.1× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := -2 \cdot \left(\frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\right)\\ \mathbf{if}\;b \leq -1.05 \cdot 10^{+76}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\ \mathbf{elif}\;b \leq -2.35 \cdot 10^{-29}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq -5.2 \cdot 10^{-177}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + c \cdot \left(t\_1 + c \cdot \left(1.3333333333333333 \cdot \left(\left(a \cdot \left(a \cdot a\right)\right) \cdot c\right)\right)\right)\right)}\\ \mathbf{elif}\;b \leq -1.02 \cdot 10^{-276}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq 4.1 \cdot 10^{-66}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + c \cdot \left(t\_1 + c \cdot \left(-0.3950617283950617 \cdot \frac{c}{t \cdot \left(t \cdot t\right)}\right)\right)\right)}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* -2.0 (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a)))))
   (if (<= b -1.05e+76)
     (/ x (+ x (* y (* 2.0 (* (* b a) (* b a))))))
     (if (<= b -2.35e-29)
       1.0
       (if (<= b -5.2e-177)
         (/
          x
          (+
           x
           (*
            y
            (+
             1.0
             (* c (+ t_1 (* c (* 1.3333333333333333 (* (* a (* a a)) c)))))))))
         (if (<= b -1.02e-276)
           1.0
           (if (<= b 4.1e-66)
             (/
              x
              (+
               x
               (*
                y
                (+
                 1.0
                 (*
                  c
                  (+
                   t_1
                   (* c (* -0.3950617283950617 (/ c (* t (* t t)))))))))))
             1.0)))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = -2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a));
	double tmp;
	if (b <= -1.05e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -2.35e-29) {
		tmp = 1.0;
	} else if (b <= -5.2e-177) {
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))));
	} else if (b <= -1.02e-276) {
		tmp = 1.0;
	} else if (b <= 4.1e-66) {
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (-2.0d0) * ((0.6666666666666666d0 / t) - (0.8333333333333334d0 + a))
    if (b <= (-1.05d+76)) then
        tmp = x / (x + (y * (2.0d0 * ((b * a) * (b * a)))))
    else if (b <= (-2.35d-29)) then
        tmp = 1.0d0
    else if (b <= (-5.2d-177)) then
        tmp = x / (x + (y * (1.0d0 + (c * (t_1 + (c * (1.3333333333333333d0 * ((a * (a * a)) * c))))))))
    else if (b <= (-1.02d-276)) then
        tmp = 1.0d0
    else if (b <= 4.1d-66) then
        tmp = x / (x + (y * (1.0d0 + (c * (t_1 + (c * ((-0.3950617283950617d0) * (c / (t * (t * t))))))))))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = -2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a));
	double tmp;
	if (b <= -1.05e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -2.35e-29) {
		tmp = 1.0;
	} else if (b <= -5.2e-177) {
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))));
	} else if (b <= -1.02e-276) {
		tmp = 1.0;
	} else if (b <= 4.1e-66) {
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = -2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a))
	tmp = 0
	if b <= -1.05e+76:
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))))
	elif b <= -2.35e-29:
		tmp = 1.0
	elif b <= -5.2e-177:
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))))
	elif b <= -1.02e-276:
		tmp = 1.0
	elif b <= 4.1e-66:
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(-2.0 * Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a)))
	tmp = 0.0
	if (b <= -1.05e+76)
		tmp = Float64(x / Float64(x + Float64(y * Float64(2.0 * Float64(Float64(b * a) * Float64(b * a))))));
	elseif (b <= -2.35e-29)
		tmp = 1.0;
	elseif (b <= -5.2e-177)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(c * Float64(t_1 + Float64(c * Float64(1.3333333333333333 * Float64(Float64(a * Float64(a * a)) * c)))))))));
	elseif (b <= -1.02e-276)
		tmp = 1.0;
	elseif (b <= 4.1e-66)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(c * Float64(t_1 + Float64(c * Float64(-0.3950617283950617 * Float64(c / Float64(t * Float64(t * t)))))))))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = -2.0 * ((0.6666666666666666 / t) - (0.8333333333333334 + a));
	tmp = 0.0;
	if (b <= -1.05e+76)
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	elseif (b <= -2.35e-29)
		tmp = 1.0;
	elseif (b <= -5.2e-177)
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (1.3333333333333333 * ((a * (a * a)) * c))))))));
	elseif (b <= -1.02e-276)
		tmp = 1.0;
	elseif (b <= 4.1e-66)
		tmp = x / (x + (y * (1.0 + (c * (t_1 + (c * (-0.3950617283950617 * (c / (t * (t * t))))))))));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(-2.0 * N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[b, -1.05e+76], N[(x / N[(x + N[(y * N[(2.0 * N[(N[(b * a), $MachinePrecision] * N[(b * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, -2.35e-29], 1.0, If[LessEqual[b, -5.2e-177], N[(x / N[(x + N[(y * N[(1.0 + N[(c * N[(t$95$1 + N[(c * N[(1.3333333333333333 * N[(N[(a * N[(a * a), $MachinePrecision]), $MachinePrecision] * c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, -1.02e-276], 1.0, If[LessEqual[b, 4.1e-66], N[(x / N[(x + N[(y * N[(1.0 + N[(c * N[(t$95$1 + N[(c * N[(-0.3950617283950617 * N[(c / N[(t * N[(t * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := -2 \cdot \left(\frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\right)\\
\mathbf{if}\;b \leq -1.05 \cdot 10^{+76}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\

\mathbf{elif}\;b \leq -2.35 \cdot 10^{-29}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq -5.2 \cdot 10^{-177}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + c \cdot \left(t\_1 + c \cdot \left(1.3333333333333333 \cdot \left(\left(a \cdot \left(a \cdot a\right)\right) \cdot c\right)\right)\right)\right)}\\

\mathbf{elif}\;b \leq -1.02 \cdot 10^{-276}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq 4.1 \cdot 10^{-66}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + c \cdot \left(t\_1 + c \cdot \left(-0.3950617283950617 \cdot \frac{c}{t \cdot \left(t \cdot t\right)}\right)\right)\right)}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if b < -1.05000000000000003e76

    1. Initial program 90.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -1.05000000000000003e76 < b < -2.3499999999999999e-29 or -5.2000000000000002e-177 < b < -1.02e-276 or 4.09999999999999998e-66 < b

    1. Initial program 93.1%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -2.3499999999999999e-29 < b < -5.2000000000000002e-177

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -1.02e-276 < b < 4.09999999999999998e-66

    1. Initial program 96.1%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 12: 52.6% accurate, 5.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;b \leq -1.6 \cdot 10^{+76}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\ \mathbf{elif}\;b \leq -6.6 \cdot 10^{-43}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq -5 \cdot 10^{-111}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + \left(2 \cdot c\right) \cdot \left(0.8333333333333334 + a\right)\right)}\\ \mathbf{elif}\;b \leq -6.2 \cdot 10^{-177}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(-0.3950617283950617 \cdot \frac{c \cdot \left(c \cdot c\right)}{t \cdot \left(t \cdot t\right)}\right)}\\ \mathbf{elif}\;b \leq 1.15 \cdot 10^{-263}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq 2.7 \cdot 10^{-93}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= b -1.6e+76)
   (/ x (+ x (* y (* 2.0 (* (* b a) (* b a))))))
   (if (<= b -6.6e-43)
     1.0
     (if (<= b -5e-111)
       (/ x (+ x (* y (+ 1.0 (* (* 2.0 c) (+ 0.8333333333333334 a))))))
       (if (<= b -6.2e-177)
         (/
          x
          (+ x (* y (* -0.3950617283950617 (/ (* c (* c c)) (* t (* t t)))))))
         (if (<= b 1.15e-263)
           1.0
           (if (<= b 2.7e-93) (/ x (* y (+ 1.0 (/ x y)))) 1.0)))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (b <= -1.6e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -6.6e-43) {
		tmp = 1.0;
	} else if (b <= -5e-111) {
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))));
	} else if (b <= -6.2e-177) {
		tmp = x / (x + (y * (-0.3950617283950617 * ((c * (c * c)) / (t * (t * t))))));
	} else if (b <= 1.15e-263) {
		tmp = 1.0;
	} else if (b <= 2.7e-93) {
		tmp = x / (y * (1.0 + (x / y)));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (b <= (-1.6d+76)) then
        tmp = x / (x + (y * (2.0d0 * ((b * a) * (b * a)))))
    else if (b <= (-6.6d-43)) then
        tmp = 1.0d0
    else if (b <= (-5d-111)) then
        tmp = x / (x + (y * (1.0d0 + ((2.0d0 * c) * (0.8333333333333334d0 + a)))))
    else if (b <= (-6.2d-177)) then
        tmp = x / (x + (y * ((-0.3950617283950617d0) * ((c * (c * c)) / (t * (t * t))))))
    else if (b <= 1.15d-263) then
        tmp = 1.0d0
    else if (b <= 2.7d-93) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (b <= -1.6e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -6.6e-43) {
		tmp = 1.0;
	} else if (b <= -5e-111) {
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))));
	} else if (b <= -6.2e-177) {
		tmp = x / (x + (y * (-0.3950617283950617 * ((c * (c * c)) / (t * (t * t))))));
	} else if (b <= 1.15e-263) {
		tmp = 1.0;
	} else if (b <= 2.7e-93) {
		tmp = x / (y * (1.0 + (x / y)));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if b <= -1.6e+76:
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))))
	elif b <= -6.6e-43:
		tmp = 1.0
	elif b <= -5e-111:
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))))
	elif b <= -6.2e-177:
		tmp = x / (x + (y * (-0.3950617283950617 * ((c * (c * c)) / (t * (t * t))))))
	elif b <= 1.15e-263:
		tmp = 1.0
	elif b <= 2.7e-93:
		tmp = x / (y * (1.0 + (x / y)))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (b <= -1.6e+76)
		tmp = Float64(x / Float64(x + Float64(y * Float64(2.0 * Float64(Float64(b * a) * Float64(b * a))))));
	elseif (b <= -6.6e-43)
		tmp = 1.0;
	elseif (b <= -5e-111)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(Float64(2.0 * c) * Float64(0.8333333333333334 + a))))));
	elseif (b <= -6.2e-177)
		tmp = Float64(x / Float64(x + Float64(y * Float64(-0.3950617283950617 * Float64(Float64(c * Float64(c * c)) / Float64(t * Float64(t * t)))))));
	elseif (b <= 1.15e-263)
		tmp = 1.0;
	elseif (b <= 2.7e-93)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (b <= -1.6e+76)
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	elseif (b <= -6.6e-43)
		tmp = 1.0;
	elseif (b <= -5e-111)
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))));
	elseif (b <= -6.2e-177)
		tmp = x / (x + (y * (-0.3950617283950617 * ((c * (c * c)) / (t * (t * t))))));
	elseif (b <= 1.15e-263)
		tmp = 1.0;
	elseif (b <= 2.7e-93)
		tmp = x / (y * (1.0 + (x / y)));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[b, -1.6e+76], N[(x / N[(x + N[(y * N[(2.0 * N[(N[(b * a), $MachinePrecision] * N[(b * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, -6.6e-43], 1.0, If[LessEqual[b, -5e-111], N[(x / N[(x + N[(y * N[(1.0 + N[(N[(2.0 * c), $MachinePrecision] * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, -6.2e-177], N[(x / N[(x + N[(y * N[(-0.3950617283950617 * N[(N[(c * N[(c * c), $MachinePrecision]), $MachinePrecision] / N[(t * N[(t * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, 1.15e-263], 1.0, If[LessEqual[b, 2.7e-93], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;b \leq -1.6 \cdot 10^{+76}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\

\mathbf{elif}\;b \leq -6.6 \cdot 10^{-43}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq -5 \cdot 10^{-111}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + \left(2 \cdot c\right) \cdot \left(0.8333333333333334 + a\right)\right)}\\

\mathbf{elif}\;b \leq -6.2 \cdot 10^{-177}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(-0.3950617283950617 \cdot \frac{c \cdot \left(c \cdot c\right)}{t \cdot \left(t \cdot t\right)}\right)}\\

\mathbf{elif}\;b \leq 1.15 \cdot 10^{-263}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq 2.7 \cdot 10^{-93}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 5 regimes
  2. if b < -1.59999999999999988e76

    1. Initial program 90.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -1.59999999999999988e76 < b < -6.60000000000000031e-43 or -6.20000000000000036e-177 < b < 1.15000000000000001e-263 or 2.7000000000000001e-93 < b

    1. Initial program 93.6%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -6.60000000000000031e-43 < b < -5.0000000000000003e-111

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]
    10. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    11. Simplified0

      \[\leadsto expr\]

    if -5.0000000000000003e-111 < b < -6.20000000000000036e-177

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if 1.15000000000000001e-263 < b < 2.7000000000000001e-93

    1. Initial program 96.8%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]
  3. Recombined 5 regimes into one program.
  4. Add Preprocessing

Alternative 13: 49.0% accurate, 5.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -5 \cdot 10^{+159}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{elif}\;x \leq -6 \cdot 10^{+21}:\\ \;\;\;\;\frac{x}{x + y \cdot \frac{\left(b \cdot b\right) \cdot 0.8888888888888888}{t \cdot t}}\\ \mathbf{elif}\;x \leq -2.4 \cdot 10^{-161}:\\ \;\;\;\;1\\ \mathbf{elif}\;x \leq -1.45 \cdot 10^{-289}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + -2 \cdot \left(c \cdot \left(\frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\right)\right)\right)}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= x -5e+159)
   (/ x (* y (+ 1.0 (/ x y))))
   (if (<= x -6e+21)
     (/ x (+ x (* y (/ (* (* b b) 0.8888888888888888) (* t t)))))
     (if (<= x -2.4e-161)
       1.0
       (if (<= x -1.45e-289)
         (/
          x
          (+
           x
           (*
            y
            (+
             1.0
             (*
              -2.0
              (* c (- (/ 0.6666666666666666 t) (+ 0.8333333333333334 a))))))))
         1.0)))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -5e+159) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -6e+21) {
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))));
	} else if (x <= -2.4e-161) {
		tmp = 1.0;
	} else if (x <= -1.45e-289) {
		tmp = x / (x + (y * (1.0 + (-2.0 * (c * ((0.6666666666666666 / t) - (0.8333333333333334 + a)))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (x <= (-5d+159)) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else if (x <= (-6d+21)) then
        tmp = x / (x + (y * (((b * b) * 0.8888888888888888d0) / (t * t))))
    else if (x <= (-2.4d-161)) then
        tmp = 1.0d0
    else if (x <= (-1.45d-289)) then
        tmp = x / (x + (y * (1.0d0 + ((-2.0d0) * (c * ((0.6666666666666666d0 / t) - (0.8333333333333334d0 + a)))))))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -5e+159) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -6e+21) {
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))));
	} else if (x <= -2.4e-161) {
		tmp = 1.0;
	} else if (x <= -1.45e-289) {
		tmp = x / (x + (y * (1.0 + (-2.0 * (c * ((0.6666666666666666 / t) - (0.8333333333333334 + a)))))));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if x <= -5e+159:
		tmp = x / (y * (1.0 + (x / y)))
	elif x <= -6e+21:
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))))
	elif x <= -2.4e-161:
		tmp = 1.0
	elif x <= -1.45e-289:
		tmp = x / (x + (y * (1.0 + (-2.0 * (c * ((0.6666666666666666 / t) - (0.8333333333333334 + a)))))))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (x <= -5e+159)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	elseif (x <= -6e+21)
		tmp = Float64(x / Float64(x + Float64(y * Float64(Float64(Float64(b * b) * 0.8888888888888888) / Float64(t * t)))));
	elseif (x <= -2.4e-161)
		tmp = 1.0;
	elseif (x <= -1.45e-289)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(-2.0 * Float64(c * Float64(Float64(0.6666666666666666 / t) - Float64(0.8333333333333334 + a))))))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (x <= -5e+159)
		tmp = x / (y * (1.0 + (x / y)));
	elseif (x <= -6e+21)
		tmp = x / (x + (y * (((b * b) * 0.8888888888888888) / (t * t))));
	elseif (x <= -2.4e-161)
		tmp = 1.0;
	elseif (x <= -1.45e-289)
		tmp = x / (x + (y * (1.0 + (-2.0 * (c * ((0.6666666666666666 / t) - (0.8333333333333334 + a)))))));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[x, -5e+159], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -6e+21], N[(x / N[(x + N[(y * N[(N[(N[(b * b), $MachinePrecision] * 0.8888888888888888), $MachinePrecision] / N[(t * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -2.4e-161], 1.0, If[LessEqual[x, -1.45e-289], N[(x / N[(x + N[(y * N[(1.0 + N[(-2.0 * N[(c * N[(N[(0.6666666666666666 / t), $MachinePrecision] - N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -5 \cdot 10^{+159}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{elif}\;x \leq -6 \cdot 10^{+21}:\\
\;\;\;\;\frac{x}{x + y \cdot \frac{\left(b \cdot b\right) \cdot 0.8888888888888888}{t \cdot t}}\\

\mathbf{elif}\;x \leq -2.4 \cdot 10^{-161}:\\
\;\;\;\;1\\

\mathbf{elif}\;x \leq -1.45 \cdot 10^{-289}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + -2 \cdot \left(c \cdot \left(\frac{0.6666666666666666}{t} - \left(0.8333333333333334 + a\right)\right)\right)\right)}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if x < -5.00000000000000003e159

    1. Initial program 89.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -5.00000000000000003e159 < x < -6e21

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -6e21 < x < -2.39999999999999999e-161 or -1.45000000000000003e-289 < x

    1. Initial program 95.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -2.39999999999999999e-161 < x < -1.45000000000000003e-289

    1. Initial program 89.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 14: 53.3% accurate, 6.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;b \leq -2.2 \cdot 10^{+76}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\ \mathbf{elif}\;b \leq -1.25 \cdot 10^{-42}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq -2.5 \cdot 10^{-154}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(1 + \left(2 \cdot c\right) \cdot \left(0.8333333333333334 + a\right)\right)}\\ \mathbf{elif}\;b \leq 3.3 \cdot 10^{-276}:\\ \;\;\;\;1\\ \mathbf{elif}\;b \leq 9.8 \cdot 10^{-89}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= b -2.2e+76)
   (/ x (+ x (* y (* 2.0 (* (* b a) (* b a))))))
   (if (<= b -1.25e-42)
     1.0
     (if (<= b -2.5e-154)
       (/ x (+ x (* y (+ 1.0 (* (* 2.0 c) (+ 0.8333333333333334 a))))))
       (if (<= b 3.3e-276)
         1.0
         (if (<= b 9.8e-89) (/ x (* y (+ 1.0 (/ x y)))) 1.0))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (b <= -2.2e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -1.25e-42) {
		tmp = 1.0;
	} else if (b <= -2.5e-154) {
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))));
	} else if (b <= 3.3e-276) {
		tmp = 1.0;
	} else if (b <= 9.8e-89) {
		tmp = x / (y * (1.0 + (x / y)));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (b <= (-2.2d+76)) then
        tmp = x / (x + (y * (2.0d0 * ((b * a) * (b * a)))))
    else if (b <= (-1.25d-42)) then
        tmp = 1.0d0
    else if (b <= (-2.5d-154)) then
        tmp = x / (x + (y * (1.0d0 + ((2.0d0 * c) * (0.8333333333333334d0 + a)))))
    else if (b <= 3.3d-276) then
        tmp = 1.0d0
    else if (b <= 9.8d-89) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (b <= -2.2e+76) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (b <= -1.25e-42) {
		tmp = 1.0;
	} else if (b <= -2.5e-154) {
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))));
	} else if (b <= 3.3e-276) {
		tmp = 1.0;
	} else if (b <= 9.8e-89) {
		tmp = x / (y * (1.0 + (x / y)));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if b <= -2.2e+76:
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))))
	elif b <= -1.25e-42:
		tmp = 1.0
	elif b <= -2.5e-154:
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))))
	elif b <= 3.3e-276:
		tmp = 1.0
	elif b <= 9.8e-89:
		tmp = x / (y * (1.0 + (x / y)))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (b <= -2.2e+76)
		tmp = Float64(x / Float64(x + Float64(y * Float64(2.0 * Float64(Float64(b * a) * Float64(b * a))))));
	elseif (b <= -1.25e-42)
		tmp = 1.0;
	elseif (b <= -2.5e-154)
		tmp = Float64(x / Float64(x + Float64(y * Float64(1.0 + Float64(Float64(2.0 * c) * Float64(0.8333333333333334 + a))))));
	elseif (b <= 3.3e-276)
		tmp = 1.0;
	elseif (b <= 9.8e-89)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (b <= -2.2e+76)
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	elseif (b <= -1.25e-42)
		tmp = 1.0;
	elseif (b <= -2.5e-154)
		tmp = x / (x + (y * (1.0 + ((2.0 * c) * (0.8333333333333334 + a)))));
	elseif (b <= 3.3e-276)
		tmp = 1.0;
	elseif (b <= 9.8e-89)
		tmp = x / (y * (1.0 + (x / y)));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[b, -2.2e+76], N[(x / N[(x + N[(y * N[(2.0 * N[(N[(b * a), $MachinePrecision] * N[(b * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, -1.25e-42], 1.0, If[LessEqual[b, -2.5e-154], N[(x / N[(x + N[(y * N[(1.0 + N[(N[(2.0 * c), $MachinePrecision] * N[(0.8333333333333334 + a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, 3.3e-276], 1.0, If[LessEqual[b, 9.8e-89], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;b \leq -2.2 \cdot 10^{+76}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\

\mathbf{elif}\;b \leq -1.25 \cdot 10^{-42}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq -2.5 \cdot 10^{-154}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(1 + \left(2 \cdot c\right) \cdot \left(0.8333333333333334 + a\right)\right)}\\

\mathbf{elif}\;b \leq 3.3 \cdot 10^{-276}:\\
\;\;\;\;1\\

\mathbf{elif}\;b \leq 9.8 \cdot 10^{-89}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if b < -2.2e76

    1. Initial program 90.4%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -2.2e76 < b < -1.25000000000000001e-42 or -2.5000000000000001e-154 < b < 3.29999999999999991e-276 or 9.8e-89 < b

    1. Initial program 93.8%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -1.25000000000000001e-42 < b < -2.5000000000000001e-154

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in t around 0 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]
    10. Taylor expanded in t around inf 0

      \[\leadsto expr\]
    11. Simplified0

      \[\leadsto expr\]

    if 3.29999999999999991e-276 < b < 9.8e-89

    1. Initial program 96.8%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]
  3. Recombined 4 regimes into one program.
  4. Add Preprocessing

Alternative 15: 48.9% accurate, 7.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -5.7 \cdot 10^{+187}:\\ \;\;\;\;1\\ \mathbf{elif}\;z \leq -4.1 \cdot 10^{+64}:\\ \;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\ \mathbf{elif}\;z \leq -2.95 \cdot 10^{-186}:\\ \;\;\;\;1\\ \mathbf{elif}\;z \leq 3.4 \cdot 10^{-227}:\\ \;\;\;\;\frac{x}{\frac{y \cdot y - x \cdot x}{y - x}}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= z -5.7e+187)
   1.0
   (if (<= z -4.1e+64)
     (/ x (+ x (* y (* 2.0 (* (* b a) (* b a))))))
     (if (<= z -2.95e-186)
       1.0
       (if (<= z 3.4e-227) (/ x (/ (- (* y y) (* x x)) (- y x))) 1.0)))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (z <= -5.7e+187) {
		tmp = 1.0;
	} else if (z <= -4.1e+64) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (z <= -2.95e-186) {
		tmp = 1.0;
	} else if (z <= 3.4e-227) {
		tmp = x / (((y * y) - (x * x)) / (y - x));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (z <= (-5.7d+187)) then
        tmp = 1.0d0
    else if (z <= (-4.1d+64)) then
        tmp = x / (x + (y * (2.0d0 * ((b * a) * (b * a)))))
    else if (z <= (-2.95d-186)) then
        tmp = 1.0d0
    else if (z <= 3.4d-227) then
        tmp = x / (((y * y) - (x * x)) / (y - x))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (z <= -5.7e+187) {
		tmp = 1.0;
	} else if (z <= -4.1e+64) {
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	} else if (z <= -2.95e-186) {
		tmp = 1.0;
	} else if (z <= 3.4e-227) {
		tmp = x / (((y * y) - (x * x)) / (y - x));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if z <= -5.7e+187:
		tmp = 1.0
	elif z <= -4.1e+64:
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))))
	elif z <= -2.95e-186:
		tmp = 1.0
	elif z <= 3.4e-227:
		tmp = x / (((y * y) - (x * x)) / (y - x))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (z <= -5.7e+187)
		tmp = 1.0;
	elseif (z <= -4.1e+64)
		tmp = Float64(x / Float64(x + Float64(y * Float64(2.0 * Float64(Float64(b * a) * Float64(b * a))))));
	elseif (z <= -2.95e-186)
		tmp = 1.0;
	elseif (z <= 3.4e-227)
		tmp = Float64(x / Float64(Float64(Float64(y * y) - Float64(x * x)) / Float64(y - x)));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (z <= -5.7e+187)
		tmp = 1.0;
	elseif (z <= -4.1e+64)
		tmp = x / (x + (y * (2.0 * ((b * a) * (b * a)))));
	elseif (z <= -2.95e-186)
		tmp = 1.0;
	elseif (z <= 3.4e-227)
		tmp = x / (((y * y) - (x * x)) / (y - x));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[z, -5.7e+187], 1.0, If[LessEqual[z, -4.1e+64], N[(x / N[(x + N[(y * N[(2.0 * N[(N[(b * a), $MachinePrecision] * N[(b * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, -2.95e-186], 1.0, If[LessEqual[z, 3.4e-227], N[(x / N[(N[(N[(y * y), $MachinePrecision] - N[(x * x), $MachinePrecision]), $MachinePrecision] / N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -5.7 \cdot 10^{+187}:\\
\;\;\;\;1\\

\mathbf{elif}\;z \leq -4.1 \cdot 10^{+64}:\\
\;\;\;\;\frac{x}{x + y \cdot \left(2 \cdot \left(\left(b \cdot a\right) \cdot \left(b \cdot a\right)\right)\right)}\\

\mathbf{elif}\;z \leq -2.95 \cdot 10^{-186}:\\
\;\;\;\;1\\

\mathbf{elif}\;z \leq 3.4 \cdot 10^{-227}:\\
\;\;\;\;\frac{x}{\frac{y \cdot y - x \cdot x}{y - x}}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -5.7000000000000004e187 or -4.09999999999999978e64 < z < -2.95e-186 or 3.39999999999999979e-227 < z

    1. Initial program 93.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]

    if -5.7000000000000004e187 < z < -4.09999999999999978e64

    1. Initial program 93.8%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in b around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in b around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in a around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -2.95e-186 < z < 3.39999999999999979e-227

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Applied egg-rr0

      \[\leadsto expr\]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 16: 50.4% accurate, 10.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -1.45 \cdot 10^{+187}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{elif}\;x \leq -4 \cdot 10^{-15}:\\ \;\;\;\;\frac{x}{\frac{y \cdot y - x \cdot x}{y - x}}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= x -1.45e+187)
   (/ x (* y (+ 1.0 (/ x y))))
   (if (<= x -4e-15) (/ x (/ (- (* y y) (* x x)) (- y x))) 1.0)))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -1.45e+187) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -4e-15) {
		tmp = x / (((y * y) - (x * x)) / (y - x));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (x <= (-1.45d+187)) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else if (x <= (-4d-15)) then
        tmp = x / (((y * y) - (x * x)) / (y - x))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -1.45e+187) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -4e-15) {
		tmp = x / (((y * y) - (x * x)) / (y - x));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if x <= -1.45e+187:
		tmp = x / (y * (1.0 + (x / y)))
	elif x <= -4e-15:
		tmp = x / (((y * y) - (x * x)) / (y - x))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (x <= -1.45e+187)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	elseif (x <= -4e-15)
		tmp = Float64(x / Float64(Float64(Float64(y * y) - Float64(x * x)) / Float64(y - x)));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (x <= -1.45e+187)
		tmp = x / (y * (1.0 + (x / y)));
	elseif (x <= -4e-15)
		tmp = x / (((y * y) - (x * x)) / (y - x));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[x, -1.45e+187], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -4e-15], N[(x / N[(N[(N[(y * y), $MachinePrecision] - N[(x * x), $MachinePrecision]), $MachinePrecision] / N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.45 \cdot 10^{+187}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{elif}\;x \leq -4 \cdot 10^{-15}:\\
\;\;\;\;\frac{x}{\frac{y \cdot y - x \cdot x}{y - x}}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if x < -1.45e187

    1. Initial program 87.5%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -1.45e187 < x < -4.0000000000000003e-15

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Applied egg-rr0

      \[\leadsto expr\]

    if -4.0000000000000003e-15 < x

    1. Initial program 94.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 17: 50.4% accurate, 10.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -4 \cdot 10^{+186}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{elif}\;x \leq -2.35 \cdot 10^{-14}:\\ \;\;\;\;\frac{x}{y \cdot y - x \cdot x} \cdot \left(y - x\right)\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= x -4e+186)
   (/ x (* y (+ 1.0 (/ x y))))
   (if (<= x -2.35e-14) (* (/ x (- (* y y) (* x x))) (- y x)) 1.0)))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -4e+186) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -2.35e-14) {
		tmp = (x / ((y * y) - (x * x))) * (y - x);
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (x <= (-4d+186)) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else if (x <= (-2.35d-14)) then
        tmp = (x / ((y * y) - (x * x))) * (y - x)
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -4e+186) {
		tmp = x / (y * (1.0 + (x / y)));
	} else if (x <= -2.35e-14) {
		tmp = (x / ((y * y) - (x * x))) * (y - x);
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if x <= -4e+186:
		tmp = x / (y * (1.0 + (x / y)))
	elif x <= -2.35e-14:
		tmp = (x / ((y * y) - (x * x))) * (y - x)
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (x <= -4e+186)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	elseif (x <= -2.35e-14)
		tmp = Float64(Float64(x / Float64(Float64(y * y) - Float64(x * x))) * Float64(y - x));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (x <= -4e+186)
		tmp = x / (y * (1.0 + (x / y)));
	elseif (x <= -2.35e-14)
		tmp = (x / ((y * y) - (x * x))) * (y - x);
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[x, -4e+186], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -2.35e-14], N[(N[(x / N[(N[(y * y), $MachinePrecision] - N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(y - x), $MachinePrecision]), $MachinePrecision], 1.0]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -4 \cdot 10^{+186}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{elif}\;x \leq -2.35 \cdot 10^{-14}:\\
\;\;\;\;\frac{x}{y \cdot y - x \cdot x} \cdot \left(y - x\right)\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if x < -3.99999999999999992e186

    1. Initial program 87.5%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -3.99999999999999992e186 < x < -2.3500000000000001e-14

    1. Initial program 100.0%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Applied egg-rr0

      \[\leadsto expr\]

    if -2.3500000000000001e-14 < x

    1. Initial program 94.2%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 18: 50.4% accurate, 16.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -6.6 \cdot 10^{+96}:\\ \;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= x -6.6e+96) (/ x (* y (+ 1.0 (/ x y)))) 1.0))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -6.6e+96) {
		tmp = x / (y * (1.0 + (x / y)));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: tmp
    if (x <= (-6.6d+96)) then
        tmp = x / (y * (1.0d0 + (x / y)))
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (x <= -6.6e+96) {
		tmp = x / (y * (1.0 + (x / y)));
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if x <= -6.6e+96:
		tmp = x / (y * (1.0 + (x / y)))
	else:
		tmp = 1.0
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (x <= -6.6e+96)
		tmp = Float64(x / Float64(y * Float64(1.0 + Float64(x / y))));
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (x <= -6.6e+96)
		tmp = x / (y * (1.0 + (x / y)));
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[x, -6.6e+96], N[(x / N[(y * N[(1.0 + N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -6.6 \cdot 10^{+96}:\\
\;\;\;\;\frac{x}{y \cdot \left(1 + \frac{x}{y}\right)}\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < -6.59999999999999969e96

    1. Initial program 91.7%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in c around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
    6. Taylor expanded in c around 0 0

      \[\leadsto expr\]
    7. Simplified0

      \[\leadsto expr\]
    8. Taylor expanded in y around inf 0

      \[\leadsto expr\]
    9. Simplified0

      \[\leadsto expr\]

    if -6.59999999999999969e96 < x

    1. Initial program 94.8%

      \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
    2. Simplified0

      \[\leadsto expr\]
    3. Add Preprocessing
    4. Taylor expanded in x around inf 0

      \[\leadsto expr\]
    5. Simplified0

      \[\leadsto expr\]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 19: 51.9% accurate, 231.0× speedup?

\[\begin{array}{l} \\ 1 \end{array} \]
(FPCore (x y z t a b c) :precision binary64 1.0)
double code(double x, double y, double z, double t, double a, double b, double c) {
	return 1.0;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    code = 1.0d0
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return 1.0;
}
def code(x, y, z, t, a, b, c):
	return 1.0
function code(x, y, z, t, a, b, c)
	return 1.0
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = 1.0;
end
code[x_, y_, z_, t_, a_, b_, c_] := 1.0
\begin{array}{l}

\\
1
\end{array}
Derivation
  1. Initial program 94.2%

    \[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}} \]
  2. Simplified0

    \[\leadsto expr\]
  3. Add Preprocessing
  4. Taylor expanded in x around inf 0

    \[\leadsto expr\]
  5. Simplified0

    \[\leadsto expr\]
  6. Add Preprocessing

Developer target: 94.9% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := z \cdot \sqrt{t + a}\\ t_2 := a - \frac{5}{6}\\ \mathbf{if}\;t < -2.118326644891581 \cdot 10^{-50}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(\left(a \cdot c + 0.8333333333333334 \cdot c\right) - a \cdot b\right)}}\\ \mathbf{elif}\;t < 5.196588770651547 \cdot 10^{-123}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \frac{t\_1 \cdot \left(\left(3 \cdot t\right) \cdot t\_2\right) - \left(\left(\frac{5}{6} + a\right) \cdot \left(3 \cdot t\right) - 2\right) \cdot \left(t\_2 \cdot \left(\left(b - c\right) \cdot t\right)\right)}{\left(\left(t \cdot t\right) \cdot 3\right) \cdot t\_2}}}\\ \mathbf{else}:\\ \;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{t\_1}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}}\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* z (sqrt (+ t a)))) (t_2 (- a (/ 5.0 6.0))))
   (if (< t -2.118326644891581e-50)
     (/
      x
      (+
       x
       (* y (exp (* 2.0 (- (+ (* a c) (* 0.8333333333333334 c)) (* a b)))))))
     (if (< t 5.196588770651547e-123)
       (/
        x
        (+
         x
         (*
          y
          (exp
           (*
            2.0
            (/
             (-
              (* t_1 (* (* 3.0 t) t_2))
              (*
               (- (* (+ (/ 5.0 6.0) a) (* 3.0 t)) 2.0)
               (* t_2 (* (- b c) t))))
             (* (* (* t t) 3.0) t_2)))))))
       (/
        x
        (+
         x
         (*
          y
          (exp
           (*
            2.0
            (-
             (/ t_1 t)
             (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0))))))))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = z * sqrt((t + a));
	double t_2 = a - (5.0 / 6.0);
	double tmp;
	if (t < -2.118326644891581e-50) {
		tmp = x / (x + (y * exp((2.0 * (((a * c) + (0.8333333333333334 * c)) - (a * b))))));
	} else if (t < 5.196588770651547e-123) {
		tmp = x / (x + (y * exp((2.0 * (((t_1 * ((3.0 * t) * t_2)) - (((((5.0 / 6.0) + a) * (3.0 * t)) - 2.0) * (t_2 * ((b - c) * t)))) / (((t * t) * 3.0) * t_2))))));
	} else {
		tmp = x / (x + (y * exp((2.0 * ((t_1 / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = z * sqrt((t + a))
    t_2 = a - (5.0d0 / 6.0d0)
    if (t < (-2.118326644891581d-50)) then
        tmp = x / (x + (y * exp((2.0d0 * (((a * c) + (0.8333333333333334d0 * c)) - (a * b))))))
    else if (t < 5.196588770651547d-123) then
        tmp = x / (x + (y * exp((2.0d0 * (((t_1 * ((3.0d0 * t) * t_2)) - (((((5.0d0 / 6.0d0) + a) * (3.0d0 * t)) - 2.0d0) * (t_2 * ((b - c) * t)))) / (((t * t) * 3.0d0) * t_2))))))
    else
        tmp = x / (x + (y * exp((2.0d0 * ((t_1 / t) - ((b - c) * ((a + (5.0d0 / 6.0d0)) - (2.0d0 / (t * 3.0d0)))))))))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = z * Math.sqrt((t + a));
	double t_2 = a - (5.0 / 6.0);
	double tmp;
	if (t < -2.118326644891581e-50) {
		tmp = x / (x + (y * Math.exp((2.0 * (((a * c) + (0.8333333333333334 * c)) - (a * b))))));
	} else if (t < 5.196588770651547e-123) {
		tmp = x / (x + (y * Math.exp((2.0 * (((t_1 * ((3.0 * t) * t_2)) - (((((5.0 / 6.0) + a) * (3.0 * t)) - 2.0) * (t_2 * ((b - c) * t)))) / (((t * t) * 3.0) * t_2))))));
	} else {
		tmp = x / (x + (y * Math.exp((2.0 * ((t_1 / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = z * math.sqrt((t + a))
	t_2 = a - (5.0 / 6.0)
	tmp = 0
	if t < -2.118326644891581e-50:
		tmp = x / (x + (y * math.exp((2.0 * (((a * c) + (0.8333333333333334 * c)) - (a * b))))))
	elif t < 5.196588770651547e-123:
		tmp = x / (x + (y * math.exp((2.0 * (((t_1 * ((3.0 * t) * t_2)) - (((((5.0 / 6.0) + a) * (3.0 * t)) - 2.0) * (t_2 * ((b - c) * t)))) / (((t * t) * 3.0) * t_2))))))
	else:
		tmp = x / (x + (y * math.exp((2.0 * ((t_1 / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))))
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(z * sqrt(Float64(t + a)))
	t_2 = Float64(a - Float64(5.0 / 6.0))
	tmp = 0.0
	if (t < -2.118326644891581e-50)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(Float64(a * c) + Float64(0.8333333333333334 * c)) - Float64(a * b)))))));
	elseif (t < 5.196588770651547e-123)
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(Float64(t_1 * Float64(Float64(3.0 * t) * t_2)) - Float64(Float64(Float64(Float64(Float64(5.0 / 6.0) + a) * Float64(3.0 * t)) - 2.0) * Float64(t_2 * Float64(Float64(b - c) * t)))) / Float64(Float64(Float64(t * t) * 3.0) * t_2)))))));
	else
		tmp = Float64(x / Float64(x + Float64(y * exp(Float64(2.0 * Float64(Float64(t_1 / t) - Float64(Float64(b - c) * Float64(Float64(a + Float64(5.0 / 6.0)) - Float64(2.0 / Float64(t * 3.0))))))))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = z * sqrt((t + a));
	t_2 = a - (5.0 / 6.0);
	tmp = 0.0;
	if (t < -2.118326644891581e-50)
		tmp = x / (x + (y * exp((2.0 * (((a * c) + (0.8333333333333334 * c)) - (a * b))))));
	elseif (t < 5.196588770651547e-123)
		tmp = x / (x + (y * exp((2.0 * (((t_1 * ((3.0 * t) * t_2)) - (((((5.0 / 6.0) + a) * (3.0 * t)) - 2.0) * (t_2 * ((b - c) * t)))) / (((t * t) * 3.0) * t_2))))));
	else
		tmp = x / (x + (y * exp((2.0 * ((t_1 / t) - ((b - c) * ((a + (5.0 / 6.0)) - (2.0 / (t * 3.0)))))))));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(z * N[Sqrt[N[(t + a), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(a - N[(5.0 / 6.0), $MachinePrecision]), $MachinePrecision]}, If[Less[t, -2.118326644891581e-50], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(N[(a * c), $MachinePrecision] + N[(0.8333333333333334 * c), $MachinePrecision]), $MachinePrecision] - N[(a * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Less[t, 5.196588770651547e-123], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(N[(t$95$1 * N[(N[(3.0 * t), $MachinePrecision] * t$95$2), $MachinePrecision]), $MachinePrecision] - N[(N[(N[(N[(N[(5.0 / 6.0), $MachinePrecision] + a), $MachinePrecision] * N[(3.0 * t), $MachinePrecision]), $MachinePrecision] - 2.0), $MachinePrecision] * N[(t$95$2 * N[(N[(b - c), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(t * t), $MachinePrecision] * 3.0), $MachinePrecision] * t$95$2), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x / N[(x + N[(y * N[Exp[N[(2.0 * N[(N[(t$95$1 / t), $MachinePrecision] - N[(N[(b - c), $MachinePrecision] * N[(N[(a + N[(5.0 / 6.0), $MachinePrecision]), $MachinePrecision] - N[(2.0 / N[(t * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := z \cdot \sqrt{t + a}\\
t_2 := a - \frac{5}{6}\\
\mathbf{if}\;t < -2.118326644891581 \cdot 10^{-50}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(\left(a \cdot c + 0.8333333333333334 \cdot c\right) - a \cdot b\right)}}\\

\mathbf{elif}\;t < 5.196588770651547 \cdot 10^{-123}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \frac{t\_1 \cdot \left(\left(3 \cdot t\right) \cdot t\_2\right) - \left(\left(\frac{5}{6} + a\right) \cdot \left(3 \cdot t\right) - 2\right) \cdot \left(t\_2 \cdot \left(\left(b - c\right) \cdot t\right)\right)}{\left(\left(t \cdot t\right) \cdot 3\right) \cdot t\_2}}}\\

\mathbf{else}:\\
\;\;\;\;\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{t\_1}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}}\\


\end{array}
\end{array}

Reproduce

?
herbie shell --seed 2024110 
(FPCore (x y z t a b c)
  :name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, I"
  :precision binary64

  :alt
  (if (< t -2.118326644891581e-50) (/ x (+ x (* y (exp (* 2.0 (- (+ (* a c) (* 0.8333333333333334 c)) (* a b))))))) (if (< t 5.196588770651547e-123) (/ x (+ x (* y (exp (* 2.0 (/ (- (* (* z (sqrt (+ t a))) (* (* 3.0 t) (- a (/ 5.0 6.0)))) (* (- (* (+ (/ 5.0 6.0) a) (* 3.0 t)) 2.0) (* (- a (/ 5.0 6.0)) (* (- b c) t)))) (* (* (* t t) 3.0) (- a (/ 5.0 6.0))))))))) (/ x (+ x (* y (exp (* 2.0 (- (/ (* z (sqrt (+ t a))) t) (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0))))))))))))

  (/ x (+ x (* y (exp (* 2.0 (- (/ (* z (sqrt (+ t a))) t) (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0)))))))))))