Numeric.SpecFunctions:$slogFactorial from math-functions-0.1.5.2, B

Percentage Accurate: 93.8% → 99.2%

Time: 12.0s

Alternatives: 18

Speedup: 1.0×

• 31.1% of points produce a very large (infinite) output. You may want to add a precondition.

Specification

Math

\[\begin{array}{l} \\ \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+
  (+ (- (* (- x 0.5) (log x)) x) 0.91893853320467)
  (/
   (+
    (* (- (* (+ y 0.0007936500793651) z) 0.0027777777777778) z)
    0.083333333333333)
   x)))

C

double code(double x, double y, double z) {
	return ((((x - 0.5) * log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x);
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = ((((x - 0.5d0) * log(x)) - x) + 0.91893853320467d0) + ((((((y + 0.0007936500793651d0) * z) - 0.0027777777777778d0) * z) + 0.083333333333333d0) / x)
end function

Java

public static double code(double x, double y, double z) {
	return ((((x - 0.5) * Math.log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x);
}

Python

def code(x, y, z):
	return ((((x - 0.5) * math.log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x)

Julia

function code(x, y, z)
	return Float64(Float64(Float64(Float64(Float64(x - 0.5) * log(x)) - x) + 0.91893853320467) + Float64(Float64(Float64(Float64(Float64(Float64(y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x))
end

MATLAB

function tmp = code(x, y, z)
	tmp = ((((x - 0.5) * log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x);
end

Wolfram

code[x_, y_, z_] := N[(N[(N[(N[(N[(x - 0.5), $MachinePrecision] * N[Log[x], $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision] + 0.91893853320467), $MachinePrecision] + N[(N[(N[(N[(N[(N[(y + 0.0007936500793651), $MachinePrecision] * z), $MachinePrecision] - 0.0027777777777778), $MachinePrecision] * z), $MachinePrecision] + 0.083333333333333), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision]

Initial Program: 93.8% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+
  (+ (- (* (- x 0.5) (log x)) x) 0.91893853320467)
  (/
   (+
    (* (- (* (+ y 0.0007936500793651) z) 0.0027777777777778) z)
    0.083333333333333)
   x)))

C

double code(double x, double y, double z) {
	return ((((x - 0.5) * log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x);
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = ((((x - 0.5d0) * log(x)) - x) + 0.91893853320467d0) + ((((((y + 0.0007936500793651d0) * z) - 0.0027777777777778d0) * z) + 0.083333333333333d0) / x)
end function

Java

public static double code(double x, double y, double z) {
	return ((((x - 0.5) * Math.log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x);
}

Python

def code(x, y, z):
	return ((((x - 0.5) * math.log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x)

Julia

function code(x, y, z)
	return Float64(Float64(Float64(Float64(Float64(x - 0.5) * log(x)) - x) + 0.91893853320467) + Float64(Float64(Float64(Float64(Float64(Float64(y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x))
end

MATLAB

function tmp = code(x, y, z)
	tmp = ((((x - 0.5) * log(x)) - x) + 0.91893853320467) + ((((((y + 0.0007936500793651) * z) - 0.0027777777777778) * z) + 0.083333333333333) / x);
end

Wolfram

code[x_, y_, z_] := N[(N[(N[(N[(N[(x - 0.5), $MachinePrecision] * N[Log[x], $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision] + 0.91893853320467), $MachinePrecision] + N[(N[(N[(N[(N[(N[(y + 0.0007936500793651), $MachinePrecision] * z), $MachinePrecision] - 0.0027777777777778), $MachinePrecision] * z), $MachinePrecision] + 0.083333333333333), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision]

Alternative 1: 99.2% accurate, 0.9× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 4 \cdot 10^{-89}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(z \cdot \left(z \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) + 0.0027777777777778 \cdot \frac{-1}{x}\right) + \log x \cdot \left(x - 0.5\right)\right)\right)\right) - x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 4e-89)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (-
    (+
     0.91893853320467
     (+
      (* 0.083333333333333 (/ 1.0 x))
      (+
       (*
        z
        (+
         (* z (+ (* 0.0007936500793651 (/ 1.0 x)) (/ y x)))
         (* 0.0027777777777778 (/ -1.0 x))))
       (* (log x) (- x 0.5)))))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 4e-89) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 * (1.0 / x)) + ((z * ((z * ((0.0007936500793651 * (1.0 / x)) + (y / x))) + (0.0027777777777778 * (-1.0 / x)))) + (log(x) * (x - 0.5))))) - x;
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 4e-89)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(0.083333333333333 * Float64(1.0 / x)) + Float64(Float64(z * Float64(Float64(z * Float64(Float64(0.0007936500793651 * Float64(1.0 / x)) + Float64(y / x))) + Float64(0.0027777777777778 * Float64(-1.0 / x)))) + Float64(log(x) * Float64(x - 0.5))))) - x);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 4e-89], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(0.083333333333333 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(N[(z * N[(N[(z * N[(N[(0.0007936500793651 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(y / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(0.0027777777777778 * N[(-1.0 / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[Log[x], $MachinePrecision] * N[(x - 0.5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 4.00000000000000015e-89

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 99.7%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 99.8%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 99.8%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 99.8%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 99.8%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 99.8%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 99.9%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 99.9%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 4.00000000000000015e-89 < x

   1. Initial program 88.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 88.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 88.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 88.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 88.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 88.9%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 88.9%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 88.9%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 88.9%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 88.9%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 88.9%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 88.9%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 88.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in z around 0 99.6%

      \[\leadsto \color{blue}{\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(z \cdot \left(z \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) - 0.0027777777777778 \cdot \frac{1}{x}\right) + \log x \cdot \left(x - 0.5\right)\right)\right)\right) - x} \]
3. Recombined 2 regimes into one program.

4. Final simplification 99.7%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 4 \cdot 10^{-89}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(z \cdot \left(z \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) + 0.0027777777777778 \cdot \frac{-1}{x}\right) + \log x \cdot \left(x - 0.5\right)\right)\right)\right) - x\\ \end{array} \]
5. Add Preprocessing

Alternative 2: 99.5% accurate, 0.9× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 8 \cdot 10^{-24}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \left(x - 0.5\right) + z \cdot \left(\frac{z}{x} \cdot \left(y \cdot \left(1 + 0.0007936500793651 \cdot \frac{1}{y}\right)\right)\right)\right)\right)\right) - x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 8e-24)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (-
    (+
     0.91893853320467
     (+
      (/ 0.083333333333333 x)
      (+
       (* (log x) (- x 0.5))
       (* z (* (/ z x) (* y (+ 1.0 (* 0.0007936500793651 (/ 1.0 y)))))))))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 8e-24) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((log(x) * (x - 0.5)) + (z * ((z / x) * (y * (1.0 + (0.0007936500793651 * (1.0 / y))))))))) - x;
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 8e-24)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(0.083333333333333 / x) + Float64(Float64(log(x) * Float64(x - 0.5)) + Float64(z * Float64(Float64(z / x) * Float64(y * Float64(1.0 + Float64(0.0007936500793651 * Float64(1.0 / y))))))))) - x);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 8e-24], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(0.083333333333333 / x), $MachinePrecision] + N[(N[(N[Log[x], $MachinePrecision] * N[(x - 0.5), $MachinePrecision]), $MachinePrecision] + N[(z * N[(N[(z / x), $MachinePrecision] * N[(y * N[(1.0 + N[(0.0007936500793651 * N[(1.0 / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 7.99999999999999939e-24

   1. Initial program 99.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.7%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 99.6%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 99.7%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 99.7%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 99.7%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 99.7%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 99.8%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 99.8%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 99.8%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 99.8%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 7.99999999999999939e-24 < x

   1. Initial program 86.3%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 86.3%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 86.3%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 86.3%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 86.3%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 86.4%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 86.4%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 86.4%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 86.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 86.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 86.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 86.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 86.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in y around 0 74.5%

      \[\leadsto \color{blue}{\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{y \cdot {z}^{2}}{x} + \frac{z \cdot \left(0.0007936500793651 \cdot z - 0.0027777777777778\right)}{x}\right)\right)\right)\right) - x} \]

   6. Taylor expanded in z around inf 89.1%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{{z}^{2} \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right)}\right)\right)\right) - x \]
   7. Step-by-step derivation

      1. *-commutative 89.1%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) \cdot {z}^{2}}\right)\right)\right) - x \]

      2. associate-*r/ 89.1%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot 1}{x}} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      3. metadata-eval 89.1%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{\color{blue}{0.0007936500793651}}{x} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      4. unpow2 89.1%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot \color{blue}{\left(z \cdot z\right)}\right)\right)\right) - x \]

      5. associate-*r* 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot z\right) \cdot z}\right)\right)\right) - x \]

      6. *-commutative 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(z \cdot \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right)\right)} \cdot z\right)\right)\right) - x \]

      7. distribute-rgt-in 98.8%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{0.0007936500793651}{x} \cdot z + \frac{y}{x} \cdot z\right)} \cdot z\right)\right)\right) - x \]

      8. associate-*l/ 98.8%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      9. associate-*r/ 98.8%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{0.0007936500793651 \cdot \frac{z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      10. associate-*l/ 98.8%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{\frac{y \cdot z}{x}}\right) \cdot z\right)\right)\right) - x \]

      11. associate-/l* 98.8%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{y \cdot \frac{z}{x}}\right) \cdot z\right)\right)\right) - x \]

      12. distribute-rgt-out 99.6%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right)} \cdot z\right)\right)\right) - x \]

   8. Simplified 99.6%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z}\right)\right)\right) - x \]

   9. Taylor expanded in x around 0 99.6%

      \[\leadsto \left(0.91893853320467 + \left(\color{blue}{\frac{0.083333333333333}{x}} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z\right)\right)\right) - x \]

   10. Taylor expanded in y around inf 99.6%

       \[\leadsto \left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{z}{x} \cdot \color{blue}{\left(y \cdot \left(1 + 0.0007936500793651 \cdot \frac{1}{y}\right)\right)}\right) \cdot z\right)\right)\right) - x \]
3. Recombined 2 regimes into one program.

4. Final simplification 99.7%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 8 \cdot 10^{-24}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \left(x - 0.5\right) + z \cdot \left(\frac{z}{x} \cdot \left(y \cdot \left(1 + 0.0007936500793651 \cdot \frac{1}{y}\right)\right)\right)\right)\right)\right) - x\\ \end{array} \]
5. Add Preprocessing

Alternative 3: 99.5% accurate, 0.9× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 5 \cdot 10^{-59}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right)\right)\right)\right) - x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 5e-59)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (-
    (+
     0.91893853320467
     (+
      (* 0.083333333333333 (/ 1.0 x))
      (+ (* (log x) (- x 0.5)) (* z (* (+ 0.0007936500793651 y) (/ z x))))))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 5e-59) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 * (1.0 / x)) + ((log(x) * (x - 0.5)) + (z * ((0.0007936500793651 + y) * (z / x)))))) - x;
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 5e-59)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(0.083333333333333 * Float64(1.0 / x)) + Float64(Float64(log(x) * Float64(x - 0.5)) + Float64(z * Float64(Float64(0.0007936500793651 + y) * Float64(z / x)))))) - x);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 5e-59], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(0.083333333333333 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(N[(N[Log[x], $MachinePrecision] * N[(x - 0.5), $MachinePrecision]), $MachinePrecision] + N[(z * N[(N[(0.0007936500793651 + y), $MachinePrecision] * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 5.0000000000000001e-59

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 99.7%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 99.8%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 99.8%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 99.8%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 99.8%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 99.8%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 99.8%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 99.8%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 5.0000000000000001e-59 < x

   1. Initial program 87.9%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 87.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 87.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 87.9%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 87.9%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 87.9%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 87.9%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 87.9%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 87.9%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 87.9%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 87.9%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 87.9%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 87.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in y around 0 76.2%

      \[\leadsto \color{blue}{\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{y \cdot {z}^{2}}{x} + \frac{z \cdot \left(0.0007936500793651 \cdot z - 0.0027777777777778\right)}{x}\right)\right)\right)\right) - x} \]

   6. Taylor expanded in z around inf 90.4%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{{z}^{2} \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right)}\right)\right)\right) - x \]
   7. Step-by-step derivation

      1. *-commutative 90.4%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) \cdot {z}^{2}}\right)\right)\right) - x \]

      2. associate-*r/ 90.4%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot 1}{x}} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      3. metadata-eval 90.4%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{\color{blue}{0.0007936500793651}}{x} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      4. unpow2 90.4%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot \color{blue}{\left(z \cdot z\right)}\right)\right)\right) - x \]

      5. associate-*r* 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot z\right) \cdot z}\right)\right)\right) - x \]

      6. *-commutative 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(z \cdot \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right)\right)} \cdot z\right)\right)\right) - x \]

      7. distribute-rgt-in 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{0.0007936500793651}{x} \cdot z + \frac{y}{x} \cdot z\right)} \cdot z\right)\right)\right) - x \]

      8. associate-*l/ 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      9. associate-*r/ 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{0.0007936500793651 \cdot \frac{z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      10. associate-*l/ 98.9%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{\frac{y \cdot z}{x}}\right) \cdot z\right)\right)\right) - x \]

      11. associate-/l* 98.9%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{y \cdot \frac{z}{x}}\right) \cdot z\right)\right)\right) - x \]

      12. distribute-rgt-out 99.6%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right)} \cdot z\right)\right)\right) - x \]

   8. Simplified 99.6%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z}\right)\right)\right) - x \]
3. Recombined 2 regimes into one program.

4. Final simplification 99.7%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 5 \cdot 10^{-59}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right)\right)\right)\right) - x\\ \end{array} \]
5. Add Preprocessing

Alternative 4: 99.5% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 2 \cdot 10^{-49}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \left(x - 0.5\right) + z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right)\right)\right)\right) - x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 2e-49)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (-
    (+
     0.91893853320467
     (+
      (/ 0.083333333333333 x)
      (+ (* (log x) (- x 0.5)) (* z (* (+ 0.0007936500793651 y) (/ z x))))))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 2e-49) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((log(x) * (x - 0.5)) + (z * ((0.0007936500793651 + y) * (z / x)))))) - x;
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 2e-49)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(0.083333333333333 / x) + Float64(Float64(log(x) * Float64(x - 0.5)) + Float64(z * Float64(Float64(0.0007936500793651 + y) * Float64(z / x)))))) - x);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 2e-49], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(0.083333333333333 / x), $MachinePrecision] + N[(N[(N[Log[x], $MachinePrecision] * N[(x - 0.5), $MachinePrecision]), $MachinePrecision] + N[(z * N[(N[(0.0007936500793651 + y), $MachinePrecision] * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 1.99999999999999987e-49

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 99.7%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 99.8%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 99.8%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 99.8%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 99.8%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 99.8%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 99.8%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 99.8%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 1.99999999999999987e-49 < x

   1. Initial program 87.6%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 87.6%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 87.6%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 87.6%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 87.6%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 87.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 87.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 87.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 87.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 87.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 87.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 87.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 87.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in y around 0 75.7%

      \[\leadsto \color{blue}{\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{y \cdot {z}^{2}}{x} + \frac{z \cdot \left(0.0007936500793651 \cdot z - 0.0027777777777778\right)}{x}\right)\right)\right)\right) - x} \]

   6. Taylor expanded in z around inf 90.2%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{{z}^{2} \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right)}\right)\right)\right) - x \]
   7. Step-by-step derivation

      1. *-commutative 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) \cdot {z}^{2}}\right)\right)\right) - x \]

      2. associate-*r/ 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot 1}{x}} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      3. metadata-eval 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{\color{blue}{0.0007936500793651}}{x} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      4. unpow2 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot \color{blue}{\left(z \cdot z\right)}\right)\right)\right) - x \]

      5. associate-*r* 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot z\right) \cdot z}\right)\right)\right) - x \]

      6. *-commutative 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(z \cdot \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right)\right)} \cdot z\right)\right)\right) - x \]

      7. distribute-rgt-in 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{0.0007936500793651}{x} \cdot z + \frac{y}{x} \cdot z\right)} \cdot z\right)\right)\right) - x \]

      8. associate-*l/ 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      9. associate-*r/ 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{0.0007936500793651 \cdot \frac{z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      10. associate-*l/ 98.9%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{\frac{y \cdot z}{x}}\right) \cdot z\right)\right)\right) - x \]

      11. associate-/l* 98.9%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{y \cdot \frac{z}{x}}\right) \cdot z\right)\right)\right) - x \]

      12. distribute-rgt-out 99.6%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right)} \cdot z\right)\right)\right) - x \]

   8. Simplified 99.6%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z}\right)\right)\right) - x \]

   9. Taylor expanded in x around 0 99.6%

      \[\leadsto \left(0.91893853320467 + \left(\color{blue}{\frac{0.083333333333333}{x}} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z\right)\right)\right) - x \]
3. Recombined 2 regimes into one program.

4. Final simplification 99.7%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 2 \cdot 10^{-49}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \left(x - 0.5\right) + z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right)\right)\right)\right) - x\\ \end{array} \]
5. Add Preprocessing

Alternative 5: 99.6% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 175000000000:\\ \;\;\;\;\left(0.91893853320467 + \left(\log x \cdot \left(x - 0.5\right) - x\right)\right) + \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right) + x \cdot \log x\right)\right)\right) - x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 175000000000.0)
   (+
    (+ 0.91893853320467 (- (* (log x) (- x 0.5)) x))
    (/
     (+
      0.083333333333333
      (* z (- (* z (+ 0.0007936500793651 y)) 0.0027777777777778)))
     x))
   (-
    (+
     0.91893853320467
     (+
      (/ 0.083333333333333 x)
      (+ (* z (* (+ 0.0007936500793651 y) (/ z x))) (* x (log x)))))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 175000000000.0) {
		tmp = (0.91893853320467 + ((log(x) * (x - 0.5)) - x)) + ((0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((z * ((0.0007936500793651 + y) * (z / x))) + (x * log(x))))) - x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (x <= 175000000000.0d0) then
        tmp = (0.91893853320467d0 + ((log(x) * (x - 0.5d0)) - x)) + ((0.083333333333333d0 + (z * ((z * (0.0007936500793651d0 + y)) - 0.0027777777777778d0))) / x)
    else
        tmp = (0.91893853320467d0 + ((0.083333333333333d0 / x) + ((z * ((0.0007936500793651d0 + y) * (z / x))) + (x * log(x))))) - x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (x <= 175000000000.0) {
		tmp = (0.91893853320467 + ((Math.log(x) * (x - 0.5)) - x)) + ((0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((z * ((0.0007936500793651 + y) * (z / x))) + (x * Math.log(x))))) - x;
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if x <= 175000000000.0:
		tmp = (0.91893853320467 + ((math.log(x) * (x - 0.5)) - x)) + ((0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x)
	else:
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((z * ((0.0007936500793651 + y) * (z / x))) + (x * math.log(x))))) - x
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 175000000000.0)
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(log(x) * Float64(x - 0.5)) - x)) + Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * Float64(0.0007936500793651 + y)) - 0.0027777777777778))) / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(0.083333333333333 / x) + Float64(Float64(z * Float64(Float64(0.0007936500793651 + y) * Float64(z / x))) + Float64(x * log(x))))) - x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (x <= 175000000000.0)
		tmp = (0.91893853320467 + ((log(x) * (x - 0.5)) - x)) + ((0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x);
	else
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((z * ((0.0007936500793651 + y) * (z / x))) + (x * log(x))))) - x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 175000000000.0], N[(N[(0.91893853320467 + N[(N[(N[Log[x], $MachinePrecision] * N[(x - 0.5), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]), $MachinePrecision] + N[(N[(0.083333333333333 + N[(z * N[(N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(0.083333333333333 / x), $MachinePrecision] + N[(N[(z * N[(N[(0.0007936500793651 + y), $MachinePrecision] * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x * N[Log[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 1.75e11

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Add Preprocessing

   if 1.75e11 < x

   1. Initial program 84.9%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 84.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 84.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 84.9%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 84.9%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 85.0%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 85.0%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 85.0%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 85.0%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 85.0%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 85.0%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 85.0%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 85.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in y around 0 74.5%

      \[\leadsto \color{blue}{\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{y \cdot {z}^{2}}{x} + \frac{z \cdot \left(0.0007936500793651 \cdot z - 0.0027777777777778\right)}{x}\right)\right)\right)\right) - x} \]

   6. Taylor expanded in z around inf 88.0%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{{z}^{2} \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right)}\right)\right)\right) - x \]
   7. Step-by-step derivation

      1. *-commutative 88.0%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) \cdot {z}^{2}}\right)\right)\right) - x \]

      2. associate-*r/ 88.0%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot 1}{x}} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      3. metadata-eval 88.0%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{\color{blue}{0.0007936500793651}}{x} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      4. unpow2 88.0%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot \color{blue}{\left(z \cdot z\right)}\right)\right)\right) - x \]

      5. associate-*r* 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot z\right) \cdot z}\right)\right)\right) - x \]

      6. *-commutative 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(z \cdot \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right)\right)} \cdot z\right)\right)\right) - x \]

      7. distribute-rgt-in 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{0.0007936500793651}{x} \cdot z + \frac{y}{x} \cdot z\right)} \cdot z\right)\right)\right) - x \]

      8. associate-*l/ 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      9. associate-*r/ 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{0.0007936500793651 \cdot \frac{z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      10. associate-*l/ 99.5%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{\frac{y \cdot z}{x}}\right) \cdot z\right)\right)\right) - x \]

      11. associate-/l* 99.5%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{y \cdot \frac{z}{x}}\right) \cdot z\right)\right)\right) - x \]

      12. distribute-rgt-out 99.5%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right)} \cdot z\right)\right)\right) - x \]

   8. Simplified 99.5%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z}\right)\right)\right) - x \]

   9. Taylor expanded in x around 0 99.5%

      \[\leadsto \left(0.91893853320467 + \left(\color{blue}{\frac{0.083333333333333}{x}} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z\right)\right)\right) - x \]

   10. Taylor expanded in x around inf 99.5%

       \[\leadsto \left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \color{blue}{x} + \left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z\right)\right)\right) - x \]
3. Recombined 2 regimes into one program.

4. Final simplification 99.7%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 175000000000:\\ \;\;\;\;\left(0.91893853320467 + \left(\log x \cdot \left(x - 0.5\right) - x\right)\right) + \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right) + x \cdot \log x\right)\right)\right) - x\\ \end{array} \]
5. Add Preprocessing

Alternative 6: 98.5% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 3 \cdot 10^{-49}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right) + x \cdot \log x\right)\right)\right) - x\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 3e-49)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (-
    (+
     0.91893853320467
     (+
      (/ 0.083333333333333 x)
      (+ (* z (* (+ 0.0007936500793651 y) (/ z x))) (* x (log x)))))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 3e-49) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = (0.91893853320467 + ((0.083333333333333 / x) + ((z * ((0.0007936500793651 + y) * (z / x))) + (x * log(x))))) - x;
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 3e-49)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(0.083333333333333 / x) + Float64(Float64(z * Float64(Float64(0.0007936500793651 + y) * Float64(z / x))) + Float64(x * log(x))))) - x);
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 3e-49], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(0.083333333333333 / x), $MachinePrecision] + N[(N[(z * N[(N[(0.0007936500793651 + y), $MachinePrecision] * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x * N[Log[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 3e-49

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 99.7%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 99.7%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 99.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 99.8%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 99.8%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 99.8%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 99.8%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 99.8%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 99.8%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 99.8%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 3e-49 < x

   1. Initial program 87.6%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 87.6%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 87.6%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 87.6%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 87.6%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 87.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 87.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 87.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 87.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 87.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 87.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 87.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 87.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in y around 0 75.7%

      \[\leadsto \color{blue}{\left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{y \cdot {z}^{2}}{x} + \frac{z \cdot \left(0.0007936500793651 \cdot z - 0.0027777777777778\right)}{x}\right)\right)\right)\right) - x} \]

   6. Taylor expanded in z around inf 90.2%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{{z}^{2} \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right)}\right)\right)\right) - x \]
   7. Step-by-step derivation

      1. *-commutative 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) \cdot {z}^{2}}\right)\right)\right) - x \]

      2. associate-*r/ 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot 1}{x}} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      3. metadata-eval 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{\color{blue}{0.0007936500793651}}{x} + \frac{y}{x}\right) \cdot {z}^{2}\right)\right)\right) - x \]

      4. unpow2 90.2%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot \color{blue}{\left(z \cdot z\right)}\right)\right)\right) - x \]

      5. associate-*r* 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right) \cdot z\right) \cdot z}\right)\right)\right) - x \]

      6. *-commutative 99.6%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(z \cdot \left(\frac{0.0007936500793651}{x} + \frac{y}{x}\right)\right)} \cdot z\right)\right)\right) - x \]

      7. distribute-rgt-in 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{0.0007936500793651}{x} \cdot z + \frac{y}{x} \cdot z\right)} \cdot z\right)\right)\right) - x \]

      8. associate-*l/ 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{\frac{0.0007936500793651 \cdot z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      9. associate-*r/ 98.9%

         \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(\color{blue}{0.0007936500793651 \cdot \frac{z}{x}} + \frac{y}{x} \cdot z\right) \cdot z\right)\right)\right) - x \]

      10. associate-*l/ 98.9%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{\frac{y \cdot z}{x}}\right) \cdot z\right)\right)\right) - x \]

      11. associate-/l* 98.9%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \left(0.0007936500793651 \cdot \frac{z}{x} + \color{blue}{y \cdot \frac{z}{x}}\right) \cdot z\right)\right)\right) - x \]

      12. distribute-rgt-out 99.6%

          \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right)} \cdot z\right)\right)\right) - x \]

   8. Simplified 99.6%

      \[\leadsto \left(0.91893853320467 + \left(0.083333333333333 \cdot \frac{1}{x} + \left(\log x \cdot \left(x - 0.5\right) + \color{blue}{\left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z}\right)\right)\right) - x \]

   9. Taylor expanded in x around 0 99.6%

      \[\leadsto \left(0.91893853320467 + \left(\color{blue}{\frac{0.083333333333333}{x}} + \left(\log x \cdot \left(x - 0.5\right) + \left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z\right)\right)\right) - x \]

   10. Taylor expanded in x around inf 98.8%

       \[\leadsto \left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(\log x \cdot \color{blue}{x} + \left(\frac{z}{x} \cdot \left(0.0007936500793651 + y\right)\right) \cdot z\right)\right)\right) - x \]
3. Recombined 2 regimes into one program.

4. Final simplification 99.2%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 3 \cdot 10^{-49}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\frac{0.083333333333333}{x} + \left(z \cdot \left(\left(0.0007936500793651 + y\right) \cdot \frac{z}{x}\right) + x \cdot \log x\right)\right)\right) - x\\ \end{array} \]
5. Add Preprocessing

Alternative 7: 90.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 65000000:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\log x \cdot \left(x - 0.5\right) - x\right)\right) + \frac{0.083333333333333 + z \cdot \left(z \cdot y - 0.0027777777777778\right)}{x}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 65000000.0)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (+
    (+ 0.91893853320467 (- (* (log x) (- x 0.5)) x))
    (/ (+ 0.083333333333333 (* z (- (* z y) 0.0027777777777778))) x))))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 65000000.0) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = (0.91893853320467 + ((log(x) * (x - 0.5)) - x)) + ((0.083333333333333 + (z * ((z * y) - 0.0027777777777778))) / x);
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 65000000.0)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(Float64(0.91893853320467 + Float64(Float64(log(x) * Float64(x - 0.5)) - x)) + Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * y) - 0.0027777777777778))) / x));
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 65000000.0], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(N[(0.91893853320467 + N[(N[(N[Log[x], $MachinePrecision] * N[(x - 0.5), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]), $MachinePrecision] + N[(N[(0.083333333333333 + N[(z * N[(N[(z * y), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 6.5e7

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.0%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 98.8%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 98.9%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 98.9%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 99.0%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 99.0%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 99.0%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 99.0%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 99.0%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 99.0%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 99.0%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 99.0%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 99.1%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 99.1%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 6.5e7 < x

   1. Initial program 85.0%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf 82.9%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\color{blue}{y \cdot z} - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   4. Step-by-step derivation

      1. *-commutative 82.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\color{blue}{z \cdot y} - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]

   5. Simplified 82.9%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\color{blue}{z \cdot y} - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
3. Recombined 2 regimes into one program.

4. Final simplification 91.4%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 65000000:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;\left(0.91893853320467 + \left(\log x \cdot \left(x - 0.5\right) - x\right)\right) + \frac{0.083333333333333 + z \cdot \left(z \cdot y - 0.0027777777777778\right)}{x}\\ \end{array} \]
5. Add Preprocessing

Alternative 8: 83.4% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 1.9 \cdot 10^{+91}:\\ \;\;\;\;\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}\\ \mathbf{else}:\\ \;\;\;\;x \cdot \left(\log x + -1\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 1.9e+91)
   (*
    (+
     0.083333333333333
     (fma z (* z (+ 0.0007936500793651 y)) (* z -0.0027777777777778)))
    (/ 1.0 x))
   (* x (+ (log x) -1.0))))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 1.9e+91) {
		tmp = (0.083333333333333 + fma(z, (z * (0.0007936500793651 + y)), (z * -0.0027777777777778))) * (1.0 / x);
	} else {
		tmp = x * (log(x) + -1.0);
	}
	return tmp;
}

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 1.9e+91)
		tmp = Float64(Float64(0.083333333333333 + fma(z, Float64(z * Float64(0.0007936500793651 + y)), Float64(z * -0.0027777777777778))) * Float64(1.0 / x));
	else
		tmp = Float64(x * Float64(log(x) + -1.0));
	end
	return tmp
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 1.9e+91], N[(N[(0.083333333333333 + N[(z * N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 / x), $MachinePrecision]), $MachinePrecision], N[(x * N[(N[Log[x], $MachinePrecision] + -1.0), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 1.8999999999999999e91

   1. Initial program 98.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 98.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 98.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 98.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 98.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 98.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 98.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 98.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 98.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 98.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 98.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 98.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 98.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 92.1%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 91.9%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 91.9%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 91.9%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]
   8. Step-by-step derivation

      1. rem-cube-cbrt 92.1%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot \left(0.0007936500793651 + y\right)} - 0.0027777777777778\right)}{x} \]

      2. sub-neg 92.1%

         \[\leadsto \frac{0.083333333333333 + z \cdot \color{blue}{\left(z \cdot \left(0.0007936500793651 + y\right) + \left(-0.0027777777777778\right)\right)}}{x} \]

      3. metadata-eval 92.1%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) + \color{blue}{-0.0027777777777778}\right)}{x} \]

      4. distribute-rgt-in 92.1%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + -0.0027777777777778 \cdot z\right)}}{x} \]

      5. *-commutative 92.1%

         \[\leadsto \frac{0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + \color{blue}{z \cdot -0.0027777777777778}\right)}{x} \]

   9. Applied egg-rr 92.1%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{\left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)}}{x} \]
   10. Step-by-step derivation

       1. div-inv 92.1%

          \[\leadsto \color{blue}{\left(0.083333333333333 + \left(\left(z \cdot \left(0.0007936500793651 + y\right)\right) \cdot z + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

       2. *-commutative 92.1%

          \[\leadsto \left(0.083333333333333 + \left(\color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 + y\right)\right)} + z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x} \]

       3. fma-define 92.1%

          \[\leadsto \left(0.083333333333333 + \color{blue}{\mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)}\right) \cdot \frac{1}{x} \]

   11. Applied egg-rr 92.1%

       \[\leadsto \color{blue}{\left(0.083333333333333 + \mathsf{fma}\left(z, z \cdot \left(0.0007936500793651 + y\right), z \cdot -0.0027777777777778\right)\right) \cdot \frac{1}{x}} \]

   if 1.8999999999999999e91 < x

   1. Initial program 82.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 82.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 82.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 82.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 82.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 82.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 82.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 82.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 82.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 82.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 82.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 82.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 82.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around inf 81.6%

      \[\leadsto \color{blue}{x \cdot \left(-1 \cdot \log \left(\frac{1}{x}\right) - 1\right)} \]
   6. Step-by-step derivation

      1. sub-neg 81.6%

         \[\leadsto x \cdot \color{blue}{\left(-1 \cdot \log \left(\frac{1}{x}\right) + \left(-1\right)\right)} \]

      2. mul-1-neg 81.6%

         \[\leadsto x \cdot \left(\color{blue}{\left(-\log \left(\frac{1}{x}\right)\right)} + \left(-1\right)\right) \]

      3. log-rec 81.6%

         \[\leadsto x \cdot \left(\left(-\color{blue}{\left(-\log x\right)}\right) + \left(-1\right)\right) \]

      4. remove-double-neg 81.6%

         \[\leadsto x \cdot \left(\color{blue}{\log x} + \left(-1\right)\right) \]

      5. metadata-eval 81.6%

         \[\leadsto x \cdot \left(\log x + \color{blue}{-1}\right) \]

   7. Simplified 81.6%

      \[\leadsto \color{blue}{x \cdot \left(\log x + -1\right)} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 9: 83.4% accurate, 1.1× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 1.3 \cdot 10^{+95}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;x \cdot \left(\log x + -1\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 1.3e+95)
   (/
    (+
     0.083333333333333
     (* z (- (* z (+ 0.0007936500793651 y)) 0.0027777777777778)))
    x)
   (* x (+ (log x) -1.0))))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 1.3e+95) {
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
	} else {
		tmp = x * (log(x) + -1.0);
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (x <= 1.3d+95) then
        tmp = (0.083333333333333d0 + (z * ((z * (0.0007936500793651d0 + y)) - 0.0027777777777778d0))) / x
    else
        tmp = x * (log(x) + (-1.0d0))
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (x <= 1.3e+95) {
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
	} else {
		tmp = x * (Math.log(x) + -1.0);
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if x <= 1.3e+95:
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x
	else:
		tmp = x * (math.log(x) + -1.0)
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 1.3e+95)
		tmp = Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * Float64(0.0007936500793651 + y)) - 0.0027777777777778))) / x);
	else
		tmp = Float64(x * Float64(log(x) + -1.0));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (x <= 1.3e+95)
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
	else
		tmp = x * (log(x) + -1.0);
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 1.3e+95], N[(N[(0.083333333333333 + N[(z * N[(N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision], N[(x * N[(N[Log[x], $MachinePrecision] + -1.0), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 1.29999999999999995e95

   1. Initial program 98.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 98.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 98.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 98.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 98.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 98.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 98.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 98.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 98.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 98.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 98.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 98.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 98.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 92.1%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   if 1.29999999999999995e95 < x

   1. Initial program 82.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 82.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 82.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 82.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 82.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 82.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 82.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 82.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 82.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 82.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 82.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 82.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 82.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around inf 81.6%

      \[\leadsto \color{blue}{x \cdot \left(-1 \cdot \log \left(\frac{1}{x}\right) - 1\right)} \]
   6. Step-by-step derivation

      1. sub-neg 81.6%

         \[\leadsto x \cdot \color{blue}{\left(-1 \cdot \log \left(\frac{1}{x}\right) + \left(-1\right)\right)} \]

      2. mul-1-neg 81.6%

         \[\leadsto x \cdot \left(\color{blue}{\left(-\log \left(\frac{1}{x}\right)\right)} + \left(-1\right)\right) \]

      3. log-rec 81.6%

         \[\leadsto x \cdot \left(\left(-\color{blue}{\left(-\log x\right)}\right) + \left(-1\right)\right) \]

      4. remove-double-neg 81.6%

         \[\leadsto x \cdot \left(\color{blue}{\log x} + \left(-1\right)\right) \]

      5. metadata-eval 81.6%

         \[\leadsto x \cdot \left(\log x + \color{blue}{-1}\right) \]

   7. Simplified 81.6%

      \[\leadsto \color{blue}{x \cdot \left(\log x + -1\right)} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 10: 64.8% accurate, 4.1× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 8 \cdot 10^{-85}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;0.083333333333333 \cdot \frac{1}{x} + z \cdot \left(z \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) + 0.0027777777777778 \cdot \frac{-1}{x}\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= x 8e-85)
   (/
    (+
     0.083333333333333
     (* z (- (* z (+ 0.0007936500793651 y)) 0.0027777777777778)))
    x)
   (+
    (* 0.083333333333333 (/ 1.0 x))
    (*
     z
     (+
      (* z (+ (* 0.0007936500793651 (/ 1.0 x)) (/ y x)))
      (* 0.0027777777777778 (/ -1.0 x)))))))

C

double code(double x, double y, double z) {
	double tmp;
	if (x <= 8e-85) {
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
	} else {
		tmp = (0.083333333333333 * (1.0 / x)) + (z * ((z * ((0.0007936500793651 * (1.0 / x)) + (y / x))) + (0.0027777777777778 * (-1.0 / x))));
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (x <= 8d-85) then
        tmp = (0.083333333333333d0 + (z * ((z * (0.0007936500793651d0 + y)) - 0.0027777777777778d0))) / x
    else
        tmp = (0.083333333333333d0 * (1.0d0 / x)) + (z * ((z * ((0.0007936500793651d0 * (1.0d0 / x)) + (y / x))) + (0.0027777777777778d0 * ((-1.0d0) / x))))
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (x <= 8e-85) {
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
	} else {
		tmp = (0.083333333333333 * (1.0 / x)) + (z * ((z * ((0.0007936500793651 * (1.0 / x)) + (y / x))) + (0.0027777777777778 * (-1.0 / x))));
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if x <= 8e-85:
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x
	else:
		tmp = (0.083333333333333 * (1.0 / x)) + (z * ((z * ((0.0007936500793651 * (1.0 / x)) + (y / x))) + (0.0027777777777778 * (-1.0 / x))))
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (x <= 8e-85)
		tmp = Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * Float64(0.0007936500793651 + y)) - 0.0027777777777778))) / x);
	else
		tmp = Float64(Float64(0.083333333333333 * Float64(1.0 / x)) + Float64(z * Float64(Float64(z * Float64(Float64(0.0007936500793651 * Float64(1.0 / x)) + Float64(y / x))) + Float64(0.0027777777777778 * Float64(-1.0 / x)))));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (x <= 8e-85)
		tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
	else
		tmp = (0.083333333333333 * (1.0 / x)) + (z * ((z * ((0.0007936500793651 * (1.0 / x)) + (y / x))) + (0.0027777777777778 * (-1.0 / x))));
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[x, 8e-85], N[(N[(0.083333333333333 + N[(z * N[(N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision], N[(N[(0.083333333333333 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(z * N[(N[(z * N[(N[(0.0007936500793651 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(y / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(0.0027777777777778 * N[(-1.0 / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if x < 7.9999999999999998e-85

   1. Initial program 99.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 99.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 99.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 99.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 99.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 99.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 99.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 99.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 99.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   if 7.9999999999999998e-85 < x

   1. Initial program 88.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 88.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 88.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 88.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 88.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 88.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 88.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 88.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 88.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 88.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 88.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 88.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 88.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 43.0%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
   6. Step-by-step derivation

      1. add-cube-cbrt 42.9%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)} \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right) \cdot \sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}} - 0.0027777777777778\right)}{x} \]

      2. pow3 42.9%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   7. Applied egg-rr 42.9%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{{\left(\sqrt[3]{z \cdot \left(0.0007936500793651 + y\right)}\right)}^{3}} - 0.0027777777777778\right)}{x} \]

   8. Taylor expanded in z around 0 46.9%

      \[\leadsto \color{blue}{z \cdot \left(z \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) - 0.0027777777777778 \cdot \frac{1}{x}\right) + 0.083333333333333 \cdot \frac{1}{x}} \]
3. Recombined 2 regimes into one program.

4. Final simplification 66.5%

   \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 8 \cdot 10^{-85}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;0.083333333333333 \cdot \frac{1}{x} + z \cdot \left(z \cdot \left(0.0007936500793651 \cdot \frac{1}{x} + \frac{y}{x}\right) + 0.0027777777777778 \cdot \frac{-1}{x}\right)\\ \end{array} \]
5. Add Preprocessing

Alternative 11: 62.1% accurate, 5.8× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1150 \lor \neg \left(y \leq 7.2 \cdot 10^{-15}\right):\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot y - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot 0.0007936500793651 - 0.0027777777777778\right)}{x}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (or (<= y -1150.0) (not (<= y 7.2e-15)))
   (/ (+ 0.083333333333333 (* z (- (* z y) 0.0027777777777778))) x)
   (/
    (+ 0.083333333333333 (* z (- (* z 0.0007936500793651) 0.0027777777777778)))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if ((y <= -1150.0) || !(y <= 7.2e-15)) {
		tmp = (0.083333333333333 + (z * ((z * y) - 0.0027777777777778))) / x;
	} else {
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if ((y <= (-1150.0d0)) .or. (.not. (y <= 7.2d-15))) then
        tmp = (0.083333333333333d0 + (z * ((z * y) - 0.0027777777777778d0))) / x
    else
        tmp = (0.083333333333333d0 + (z * ((z * 0.0007936500793651d0) - 0.0027777777777778d0))) / x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if ((y <= -1150.0) || !(y <= 7.2e-15)) {
		tmp = (0.083333333333333 + (z * ((z * y) - 0.0027777777777778))) / x;
	} else {
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x;
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if (y <= -1150.0) or not (y <= 7.2e-15):
		tmp = (0.083333333333333 + (z * ((z * y) - 0.0027777777777778))) / x
	else:
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if ((y <= -1150.0) || !(y <= 7.2e-15))
		tmp = Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * y) - 0.0027777777777778))) / x);
	else
		tmp = Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * 0.0007936500793651) - 0.0027777777777778))) / x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if ((y <= -1150.0) || ~((y <= 7.2e-15)))
		tmp = (0.083333333333333 + (z * ((z * y) - 0.0027777777777778))) / x;
	else
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[Or[LessEqual[y, -1150.0], N[Not[LessEqual[y, 7.2e-15]], $MachinePrecision]], N[(N[(0.083333333333333 + N[(z * N[(N[(z * y), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision], N[(N[(0.083333333333333 + N[(z * N[(N[(z * 0.0007936500793651), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -1150 or 7.2000000000000002e-15 < y

   1. Initial program 92.9%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 92.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 92.9%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 92.9%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 92.9%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 92.9%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 92.9%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 92.9%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 92.9%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 92.9%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 92.9%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 92.9%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 92.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 62.3%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in y around inf 62.3%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{y \cdot z} - 0.0027777777777778\right)}{x} \]
   7. Step-by-step derivation

      1. *-commutative 62.3%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot y} - 0.0027777777777778\right)}{x} \]

   8. Simplified 62.3%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot y} - 0.0027777777777778\right)}{x} \]

   if -1150 < y < 7.2000000000000002e-15

   1. Initial program 92.7%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 92.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 92.7%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 92.7%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 92.7%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 92.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 92.8%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 92.8%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 92.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 92.8%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 92.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 92.8%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 92.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 65.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in y around 0 65.3%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{0.0007936500793651 \cdot z} - 0.0027777777777778\right)}{x} \]
   7. Step-by-step derivation

      1. *-commutative 65.3%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot 0.0007936500793651} - 0.0027777777777778\right)}{x} \]

   8. Simplified 65.3%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot 0.0007936500793651} - 0.0027777777777778\right)}{x} \]
3. Recombined 2 regimes into one program.

4. Final simplification 63.8%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1150 \lor \neg \left(y \leq 7.2 \cdot 10^{-15}\right):\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot y - 0.0027777777777778\right)}{x}\\ \mathbf{else}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot 0.0007936500793651 - 0.0027777777777778\right)}{x}\\ \end{array} \]
5. Add Preprocessing

Alternative 12: 48.8% accurate, 7.7× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1350:\\ \;\;\;\;0.083333333333333 \cdot \frac{1}{x} + -0.0027777777777778 \cdot \frac{z}{x}\\ \mathbf{else}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot 0.0007936500793651 - 0.0027777777777778\right)}{x}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= y -1350.0)
   (+ (* 0.083333333333333 (/ 1.0 x)) (* -0.0027777777777778 (/ z x)))
   (/
    (+ 0.083333333333333 (* z (- (* z 0.0007936500793651) 0.0027777777777778)))
    x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (y <= -1350.0) {
		tmp = (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x));
	} else {
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-1350.0d0)) then
        tmp = (0.083333333333333d0 * (1.0d0 / x)) + ((-0.0027777777777778d0) * (z / x))
    else
        tmp = (0.083333333333333d0 + (z * ((z * 0.0007936500793651d0) - 0.0027777777777778d0))) / x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -1350.0) {
		tmp = (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x));
	} else {
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x;
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if y <= -1350.0:
		tmp = (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x))
	else:
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (y <= -1350.0)
		tmp = Float64(Float64(0.083333333333333 * Float64(1.0 / x)) + Float64(-0.0027777777777778 * Float64(z / x)));
	else
		tmp = Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * 0.0007936500793651) - 0.0027777777777778))) / x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -1350.0)
		tmp = (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x));
	else
		tmp = (0.083333333333333 + (z * ((z * 0.0007936500793651) - 0.0027777777777778))) / x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[y, -1350.0], N[(N[(0.083333333333333 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(-0.0027777777777778 * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(0.083333333333333 + N[(z * N[(N[(z * 0.0007936500793651), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -1350

   1. Initial program 91.2%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 91.2%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 91.2%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 91.2%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 91.2%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 91.3%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 91.3%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 91.3%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 91.3%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 91.3%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 91.3%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 91.3%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 91.3%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 69.1%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in z around 0 26.8%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
   7. Step-by-step derivation

      1. *-commutative 26.8%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   8. Simplified 26.8%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   9. Taylor expanded in z around 0 26.8%

      \[\leadsto \color{blue}{-0.0027777777777778 \cdot \frac{z}{x} + 0.083333333333333 \cdot \frac{1}{x}} \]

   if -1350 < y

   1. Initial program 93.4%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 93.4%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 93.4%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 93.4%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 93.4%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 93.4%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 93.4%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 93.4%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 93.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 93.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 93.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 93.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 93.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 62.3%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in y around 0 58.9%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{0.0007936500793651 \cdot z} - 0.0027777777777778\right)}{x} \]
   7. Step-by-step derivation

      1. *-commutative 58.9%

         \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot 0.0007936500793651} - 0.0027777777777778\right)}{x} \]

   8. Simplified 58.9%

      \[\leadsto \frac{0.083333333333333 + z \cdot \left(\color{blue}{z \cdot 0.0007936500793651} - 0.0027777777777778\right)}{x} \]
3. Recombined 2 regimes into one program.

4. Final simplification 50.5%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1350:\\ \;\;\;\;0.083333333333333 \cdot \frac{1}{x} + -0.0027777777777778 \cdot \frac{z}{x}\\ \mathbf{else}:\\ \;\;\;\;\frac{0.083333333333333 + z \cdot \left(z \cdot 0.0007936500793651 - 0.0027777777777778\right)}{x}\\ \end{array} \]
5. Add Preprocessing

Alternative 13: 62.5% accurate, 9.5× speedup

Math

\[\begin{array}{l} \\ \frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (/
  (+
   0.083333333333333
   (* z (- (* z (+ 0.0007936500793651 y)) 0.0027777777777778)))
  x))

C

double code(double x, double y, double z) {
	return (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = (0.083333333333333d0 + (z * ((z * (0.0007936500793651d0 + y)) - 0.0027777777777778d0))) / x
end function

Java

public static double code(double x, double y, double z) {
	return (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
}

Python

def code(x, y, z):
	return (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x

Julia

function code(x, y, z)
	return Float64(Float64(0.083333333333333 + Float64(z * Float64(Float64(z * Float64(0.0007936500793651 + y)) - 0.0027777777777778))) / x)
end

MATLAB

function tmp = code(x, y, z)
	tmp = (0.083333333333333 + (z * ((z * (0.0007936500793651 + y)) - 0.0027777777777778))) / x;
end

Wolfram

code[x_, y_, z_] := N[(N[(0.083333333333333 + N[(z * N[(N[(z * N[(0.0007936500793651 + y), $MachinePrecision]), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]

Derivation

1. Initial program 92.8%

   \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
2. Step-by-step derivation

   1. remove-double-neg 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

   2. distribute-frac-neg2 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

   3. sub-neg 92.8%

      \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   4. associate-+l+ 92.8%

      \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   5. fma-define 92.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   6. sub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   7. metadata-eval 92.8%

      \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   8. +-commutative 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   9. unsub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   10. distribute-frac-neg2 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

   11. remove-double-neg 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

3. Simplified 92.8%

   \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
4. Add Preprocessing

5. Taylor expanded in x around 0 64.1%

   \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]
6. Add Preprocessing

Alternative 14: 29.4% accurate, 11.2× speedup

Math

\[\begin{array}{l} \\ 0.083333333333333 \cdot \frac{1}{x} + -0.0027777777777778 \cdot \frac{z}{x} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+ (* 0.083333333333333 (/ 1.0 x)) (* -0.0027777777777778 (/ z x))))

C

double code(double x, double y, double z) {
	return (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x));
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = (0.083333333333333d0 * (1.0d0 / x)) + ((-0.0027777777777778d0) * (z / x))
end function

Java

public static double code(double x, double y, double z) {
	return (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x));
}

Python

def code(x, y, z):
	return (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x))

Julia

function code(x, y, z)
	return Float64(Float64(0.083333333333333 * Float64(1.0 / x)) + Float64(-0.0027777777777778 * Float64(z / x)))
end

MATLAB

function tmp = code(x, y, z)
	tmp = (0.083333333333333 * (1.0 / x)) + (-0.0027777777777778 * (z / x));
end

Wolfram

code[x_, y_, z_] := N[(N[(0.083333333333333 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision] + N[(-0.0027777777777778 * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 92.8%

   \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
2. Step-by-step derivation

   1. remove-double-neg 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

   2. distribute-frac-neg2 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

   3. sub-neg 92.8%

      \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   4. associate-+l+ 92.8%

      \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   5. fma-define 92.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   6. sub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   7. metadata-eval 92.8%

      \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   8. +-commutative 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   9. unsub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   10. distribute-frac-neg2 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

   11. remove-double-neg 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

3. Simplified 92.8%

   \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
4. Add Preprocessing

5. Taylor expanded in x around 0 64.1%

   \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

6. Taylor expanded in z around 0 31.2%

   \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
7. Step-by-step derivation

   1. *-commutative 31.2%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

8. Simplified 31.2%

   \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

9. Taylor expanded in z around 0 31.2%

   \[\leadsto \color{blue}{-0.0027777777777778 \cdot \frac{z}{x} + 0.083333333333333 \cdot \frac{1}{x}} \]

10. Final simplification 31.2%

    \[\leadsto 0.083333333333333 \cdot \frac{1}{x} + -0.0027777777777778 \cdot \frac{z}{x} \]
11. Add Preprocessing

Alternative 15: 28.2% accurate, 12.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -55000000000:\\ \;\;\;\;-0.0027777777777778 \cdot \frac{z}{x}\\ \mathbf{else}:\\ \;\;\;\;0.083333333333333 \cdot \frac{1}{x}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= z -55000000000.0)
   (* -0.0027777777777778 (/ z x))
   (* 0.083333333333333 (/ 1.0 x))))

C

double code(double x, double y, double z) {
	double tmp;
	if (z <= -55000000000.0) {
		tmp = -0.0027777777777778 * (z / x);
	} else {
		tmp = 0.083333333333333 * (1.0 / x);
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (z <= (-55000000000.0d0)) then
        tmp = (-0.0027777777777778d0) * (z / x)
    else
        tmp = 0.083333333333333d0 * (1.0d0 / x)
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (z <= -55000000000.0) {
		tmp = -0.0027777777777778 * (z / x);
	} else {
		tmp = 0.083333333333333 * (1.0 / x);
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if z <= -55000000000.0:
		tmp = -0.0027777777777778 * (z / x)
	else:
		tmp = 0.083333333333333 * (1.0 / x)
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (z <= -55000000000.0)
		tmp = Float64(-0.0027777777777778 * Float64(z / x));
	else
		tmp = Float64(0.083333333333333 * Float64(1.0 / x));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (z <= -55000000000.0)
		tmp = -0.0027777777777778 * (z / x);
	else
		tmp = 0.083333333333333 * (1.0 / x);
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[z, -55000000000.0], N[(-0.0027777777777778 * N[(z / x), $MachinePrecision]), $MachinePrecision], N[(0.083333333333333 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if z < -5.5e10

   1. Initial program 78.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 78.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 78.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 78.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 78.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 78.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 78.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 78.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 78.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 78.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 78.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 78.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 78.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 67.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in z around 0 17.6%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
   7. Step-by-step derivation

      1. *-commutative 17.6%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   8. Simplified 17.6%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   9. Taylor expanded in z around inf 17.6%

      \[\leadsto \color{blue}{-0.0027777777777778 \cdot \frac{z}{x}} \]

   if -5.5e10 < z

   1. Initial program 97.3%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 97.3%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 97.3%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 97.3%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 97.3%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 97.4%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 97.4%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 97.4%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 97.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 97.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 97.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 97.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 97.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 62.9%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in z around 0 35.5%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
   7. Step-by-step derivation

      1. *-commutative 35.5%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   8. Simplified 35.5%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   9. Taylor expanded in z around 0 33.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333}{x}} \]
   10. Step-by-step derivation

       1. div-inv 33.9%

          \[\leadsto \color{blue}{0.083333333333333 \cdot \frac{1}{x}} \]

       2. *-commutative 33.9%

          \[\leadsto \color{blue}{\frac{1}{x} \cdot 0.083333333333333} \]

   11. Applied egg-rr 33.9%

       \[\leadsto \color{blue}{\frac{1}{x} \cdot 0.083333333333333} \]
3. Recombined 2 regimes into one program.

4. Final simplification 29.9%

   \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -55000000000:\\ \;\;\;\;-0.0027777777777778 \cdot \frac{z}{x}\\ \mathbf{else}:\\ \;\;\;\;0.083333333333333 \cdot \frac{1}{x}\\ \end{array} \]
5. Add Preprocessing

Alternative 16: 28.2% accurate, 12.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -55000000000:\\ \;\;\;\;-0.0027777777777778 \cdot \frac{z}{x}\\ \mathbf{else}:\\ \;\;\;\;\frac{0.083333333333333}{x}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (if (<= z -55000000000.0)
   (* -0.0027777777777778 (/ z x))
   (/ 0.083333333333333 x)))

C

double code(double x, double y, double z) {
	double tmp;
	if (z <= -55000000000.0) {
		tmp = -0.0027777777777778 * (z / x);
	} else {
		tmp = 0.083333333333333 / x;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (z <= (-55000000000.0d0)) then
        tmp = (-0.0027777777777778d0) * (z / x)
    else
        tmp = 0.083333333333333d0 / x
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double tmp;
	if (z <= -55000000000.0) {
		tmp = -0.0027777777777778 * (z / x);
	} else {
		tmp = 0.083333333333333 / x;
	}
	return tmp;
}

Python

def code(x, y, z):
	tmp = 0
	if z <= -55000000000.0:
		tmp = -0.0027777777777778 * (z / x)
	else:
		tmp = 0.083333333333333 / x
	return tmp

Julia

function code(x, y, z)
	tmp = 0.0
	if (z <= -55000000000.0)
		tmp = Float64(-0.0027777777777778 * Float64(z / x));
	else
		tmp = Float64(0.083333333333333 / x);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (z <= -55000000000.0)
		tmp = -0.0027777777777778 * (z / x);
	else
		tmp = 0.083333333333333 / x;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := If[LessEqual[z, -55000000000.0], N[(-0.0027777777777778 * N[(z / x), $MachinePrecision]), $MachinePrecision], N[(0.083333333333333 / x), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if z < -5.5e10

   1. Initial program 78.8%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 78.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 78.8%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 78.8%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 78.8%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 78.7%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 78.7%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 78.7%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 78.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 78.7%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 78.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 78.7%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 78.7%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 67.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in z around 0 17.6%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
   7. Step-by-step derivation

      1. *-commutative 17.6%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   8. Simplified 17.6%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   9. Taylor expanded in z around inf 17.6%

      \[\leadsto \color{blue}{-0.0027777777777778 \cdot \frac{z}{x}} \]

   if -5.5e10 < z

   1. Initial program 97.3%

      \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
   2. Step-by-step derivation

      1. remove-double-neg 97.3%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

      2. distribute-frac-neg2 97.3%

         \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

      3. sub-neg 97.3%

         \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      4. associate-+l+ 97.3%

         \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      5. fma-define 97.4%

         \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      6. sub-neg 97.4%

         \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      7. metadata-eval 97.4%

         \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      8. +-commutative 97.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      9. unsub-neg 97.4%

         \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

      10. distribute-frac-neg2 97.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

      11. remove-double-neg 97.4%

          \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

   3. Simplified 97.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
   4. Add Preprocessing

   5. Taylor expanded in x around 0 62.9%

      \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

   6. Taylor expanded in z around 0 35.5%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
   7. Step-by-step derivation

      1. *-commutative 35.5%

         \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   8. Simplified 35.5%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

   9. Taylor expanded in z around 0 33.8%

      \[\leadsto \color{blue}{\frac{0.083333333333333}{x}} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 17: 29.3% accurate, 17.6× speedup

Math

\[\begin{array}{l} \\ \frac{0.083333333333333 + z \cdot -0.0027777777777778}{x} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (/ (+ 0.083333333333333 (* z -0.0027777777777778)) x))

C

double code(double x, double y, double z) {
	return (0.083333333333333 + (z * -0.0027777777777778)) / x;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = (0.083333333333333d0 + (z * (-0.0027777777777778d0))) / x
end function

Java

public static double code(double x, double y, double z) {
	return (0.083333333333333 + (z * -0.0027777777777778)) / x;
}

Python

def code(x, y, z):
	return (0.083333333333333 + (z * -0.0027777777777778)) / x

Julia

function code(x, y, z)
	return Float64(Float64(0.083333333333333 + Float64(z * -0.0027777777777778)) / x)
end

MATLAB

function tmp = code(x, y, z)
	tmp = (0.083333333333333 + (z * -0.0027777777777778)) / x;
end

Wolfram

code[x_, y_, z_] := N[(N[(0.083333333333333 + N[(z * -0.0027777777777778), $MachinePrecision]), $MachinePrecision] / x), $MachinePrecision]

Derivation

1. Initial program 92.8%

   \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
2. Step-by-step derivation

   1. remove-double-neg 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

   2. distribute-frac-neg2 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

   3. sub-neg 92.8%

      \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   4. associate-+l+ 92.8%

      \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   5. fma-define 92.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   6. sub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   7. metadata-eval 92.8%

      \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   8. +-commutative 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   9. unsub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   10. distribute-frac-neg2 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

   11. remove-double-neg 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

3. Simplified 92.8%

   \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
4. Add Preprocessing

5. Taylor expanded in x around 0 64.1%

   \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

6. Taylor expanded in z around 0 31.2%

   \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
7. Step-by-step derivation

   1. *-commutative 31.2%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

8. Simplified 31.2%

   \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]
9. Add Preprocessing

Alternative 18: 23.6% accurate, 41.0× speedup

Math

\[\begin{array}{l} \\ \frac{0.083333333333333}{x} \end{array} \]

FPCore

(FPCore (x y z) :precision binary64 (/ 0.083333333333333 x))

C

double code(double x, double y, double z) {
	return 0.083333333333333 / x;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = 0.083333333333333d0 / x
end function

Java

public static double code(double x, double y, double z) {
	return 0.083333333333333 / x;
}

Python

def code(x, y, z):
	return 0.083333333333333 / x

Julia

function code(x, y, z)
	return Float64(0.083333333333333 / x)
end

MATLAB

function tmp = code(x, y, z)
	tmp = 0.083333333333333 / x;
end

Wolfram

code[x_, y_, z_] := N[(0.083333333333333 / x), $MachinePrecision]

Derivation

1. Initial program 92.8%

   \[\left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x} \]
2. Step-by-step derivation

   1. remove-double-neg 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \color{blue}{\left(-\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)\right)} \]

   2. distribute-frac-neg2 92.8%

      \[\leadsto \left(\left(\left(x - 0.5\right) \cdot \log x - x\right) + 0.91893853320467\right) + \left(-\color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}}\right) \]

   3. sub-neg 92.8%

      \[\leadsto \left(\color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(-x\right)\right)} + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   4. associate-+l+ 92.8%

      \[\leadsto \color{blue}{\left(\left(x - 0.5\right) \cdot \log x + \left(\left(-x\right) + 0.91893853320467\right)\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   5. fma-define 92.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x - 0.5, \log x, \left(-x\right) + 0.91893853320467\right)} + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   6. sub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(\color{blue}{x + \left(-0.5\right)}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   7. metadata-eval 92.8%

      \[\leadsto \mathsf{fma}\left(x + \color{blue}{-0.5}, \log x, \left(-x\right) + 0.91893853320467\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   8. +-commutative 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 + \left(-x\right)}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   9. unsub-neg 92.8%

      \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, \color{blue}{0.91893853320467 - x}\right) + \left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{-x}\right) \]

   10. distribute-frac-neg2 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \left(-\color{blue}{\left(-\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}\right)}\right) \]

   11. remove-double-neg 92.8%

       \[\leadsto \mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \color{blue}{\frac{\left(\left(y + 0.0007936500793651\right) \cdot z - 0.0027777777777778\right) \cdot z + 0.083333333333333}{x}} \]

3. Simplified 92.8%

   \[\leadsto \color{blue}{\mathsf{fma}\left(x + -0.5, \log x, 0.91893853320467 - x\right) + \frac{\mathsf{fma}\left(z, \mathsf{fma}\left(y + 0.0007936500793651, z, -0.0027777777777778\right), 0.083333333333333\right)}{x}} \]
4. Add Preprocessing

5. Taylor expanded in x around 0 64.1%

   \[\leadsto \color{blue}{\frac{0.083333333333333 + z \cdot \left(z \cdot \left(0.0007936500793651 + y\right) - 0.0027777777777778\right)}{x}} \]

6. Taylor expanded in z around 0 31.2%

   \[\leadsto \frac{0.083333333333333 + \color{blue}{-0.0027777777777778 \cdot z}}{x} \]
7. Step-by-step derivation

   1. *-commutative 31.2%

      \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

8. Simplified 31.2%

   \[\leadsto \frac{0.083333333333333 + \color{blue}{z \cdot -0.0027777777777778}}{x} \]

9. Taylor expanded in z around 0 26.3%

   \[\leadsto \color{blue}{\frac{0.083333333333333}{x}} \]
10. Add Preprocessing

Developer Target 1: 98.6% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \left(\left(\left(x - 0.5\right) \cdot \log x + \left(0.91893853320467 - x\right)\right) + \frac{0.083333333333333}{x}\right) + \frac{z}{x} \cdot \left(z \cdot \left(y + 0.0007936500793651\right) - 0.0027777777777778\right) \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (+
  (+ (+ (* (- x 0.5) (log x)) (- 0.91893853320467 x)) (/ 0.083333333333333 x))
  (* (/ z x) (- (* z (+ y 0.0007936500793651)) 0.0027777777777778))))

C

double code(double x, double y, double z) {
	return ((((x - 0.5) * log(x)) + (0.91893853320467 - x)) + (0.083333333333333 / x)) + ((z / x) * ((z * (y + 0.0007936500793651)) - 0.0027777777777778));
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = ((((x - 0.5d0) * log(x)) + (0.91893853320467d0 - x)) + (0.083333333333333d0 / x)) + ((z / x) * ((z * (y + 0.0007936500793651d0)) - 0.0027777777777778d0))
end function

Java

public static double code(double x, double y, double z) {
	return ((((x - 0.5) * Math.log(x)) + (0.91893853320467 - x)) + (0.083333333333333 / x)) + ((z / x) * ((z * (y + 0.0007936500793651)) - 0.0027777777777778));
}

Python

def code(x, y, z):
	return ((((x - 0.5) * math.log(x)) + (0.91893853320467 - x)) + (0.083333333333333 / x)) + ((z / x) * ((z * (y + 0.0007936500793651)) - 0.0027777777777778))

Julia

function code(x, y, z)
	return Float64(Float64(Float64(Float64(Float64(x - 0.5) * log(x)) + Float64(0.91893853320467 - x)) + Float64(0.083333333333333 / x)) + Float64(Float64(z / x) * Float64(Float64(z * Float64(y + 0.0007936500793651)) - 0.0027777777777778)))
end

MATLAB

function tmp = code(x, y, z)
	tmp = ((((x - 0.5) * log(x)) + (0.91893853320467 - x)) + (0.083333333333333 / x)) + ((z / x) * ((z * (y + 0.0007936500793651)) - 0.0027777777777778));
end

Wolfram

code[x_, y_, z_] := N[(N[(N[(N[(N[(x - 0.5), $MachinePrecision] * N[Log[x], $MachinePrecision]), $MachinePrecision] + N[(0.91893853320467 - x), $MachinePrecision]), $MachinePrecision] + N[(0.083333333333333 / x), $MachinePrecision]), $MachinePrecision] + N[(N[(z / x), $MachinePrecision] * N[(N[(z * N[(y + 0.0007936500793651), $MachinePrecision]), $MachinePrecision] - 0.0027777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2024172 
(FPCore (x y z)
  :name "Numeric.SpecFunctions:$slogFactorial from math-functions-0.1.5.2, B"
  :precision binary64

  :alt
  (! :herbie-platform default (+ (+ (+ (* (- x 1/2) (log x)) (- 91893853320467/100000000000000 x)) (/ 83333333333333/1000000000000000 x)) (* (/ z x) (- (* z (+ y 7936500793651/10000000000000000)) 13888888888889/5000000000000000))))

  (+ (+ (- (* (- x 0.5) (log x)) x) 0.91893853320467) (/ (+ (* (- (* (+ y 0.0007936500793651) z) 0.0027777777777778) z) 0.083333333333333) x)))