_divideComplex, real part

Percentage Accurate: 62.0% → 85.9%
Time: 12.6s
Alternatives: 9
Speedup: 1.3×

Specification

?
\[\begin{array}{l} \\ \frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (/ (+ (* x.re y.re) (* x.im y.im)) (+ (* y.re y.re) (* y.im y.im))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	return ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    code = ((x_46re * y_46re) + (x_46im * y_46im)) / ((y_46re * y_46re) + (y_46im * y_46im))
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	return ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	return ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im))
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	return Float64(Float64(Float64(x_46_re * y_46_re) + Float64(x_46_im * y_46_im)) / Float64(Float64(y_46_re * y_46_re) + Float64(y_46_im * y_46_im)))
end
function tmp = code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := N[(N[(N[(x$46$re * y$46$re), $MachinePrecision] + N[(x$46$im * y$46$im), $MachinePrecision]), $MachinePrecision] / N[(N[(y$46$re * y$46$re), $MachinePrecision] + N[(y$46$im * y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im}
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

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

Accuracy vs Speed?

Herbie found 9 alternatives:

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

Initial Program: 62.0% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (/ (+ (* x.re y.re) (* x.im y.im)) (+ (* y.re y.re) (* y.im y.im))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	return ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    code = ((x_46re * y_46re) + (x_46im * y_46im)) / ((y_46re * y_46re) + (y_46im * y_46im))
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	return ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	return ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im))
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	return Float64(Float64(Float64(x_46_re * y_46_re) + Float64(x_46_im * y_46_im)) / Float64(Float64(y_46_re * y_46_re) + Float64(y_46_im * y_46_im)))
end
function tmp = code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := N[(N[(N[(x$46$re * y$46$re), $MachinePrecision] + N[(x$46$im * y$46$im), $MachinePrecision]), $MachinePrecision] / N[(N[(y$46$re * y$46$re), $MachinePrecision] + N[(y$46$im * y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im}
\end{array}

Alternative 1: 85.9% accurate, 0.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \leq \infty:\\ \;\;\;\;\frac{1}{\mathsf{hypot}\left(y.re, y.im\right)} \cdot \frac{\mathsf{fma}\left(x.re, y.re, x.im \cdot y.im\right)}{\mathsf{hypot}\left(y.re, y.im\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{\frac{y.re}{y.im}}{\frac{y.im}{x.re}}\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (if (<=
      (/ (+ (* x.re y.re) (* x.im y.im)) (+ (* y.re y.re) (* y.im y.im)))
      INFINITY)
   (*
    (/ 1.0 (hypot y.re y.im))
    (/ (fma x.re y.re (* x.im y.im)) (hypot y.re y.im)))
   (+ (/ x.im y.im) (/ (/ y.re y.im) (/ y.im x.re)))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if ((((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im))) <= ((double) INFINITY)) {
		tmp = (1.0 / hypot(y_46_re, y_46_im)) * (fma(x_46_re, y_46_re, (x_46_im * y_46_im)) / hypot(y_46_re, y_46_im));
	} else {
		tmp = (x_46_im / y_46_im) + ((y_46_re / y_46_im) / (y_46_im / x_46_re));
	}
	return tmp;
}
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0
	if (Float64(Float64(Float64(x_46_re * y_46_re) + Float64(x_46_im * y_46_im)) / Float64(Float64(y_46_re * y_46_re) + Float64(y_46_im * y_46_im))) <= Inf)
		tmp = Float64(Float64(1.0 / hypot(y_46_re, y_46_im)) * Float64(fma(x_46_re, y_46_re, Float64(x_46_im * y_46_im)) / hypot(y_46_re, y_46_im)));
	else
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(Float64(y_46_re / y_46_im) / Float64(y_46_im / x_46_re)));
	end
	return tmp
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := If[LessEqual[N[(N[(N[(x$46$re * y$46$re), $MachinePrecision] + N[(x$46$im * y$46$im), $MachinePrecision]), $MachinePrecision] / N[(N[(y$46$re * y$46$re), $MachinePrecision] + N[(y$46$im * y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], Infinity], N[(N[(1.0 / N[Sqrt[y$46$re ^ 2 + y$46$im ^ 2], $MachinePrecision]), $MachinePrecision] * N[(N[(x$46$re * y$46$re + N[(x$46$im * y$46$im), $MachinePrecision]), $MachinePrecision] / N[Sqrt[y$46$re ^ 2 + y$46$im ^ 2], $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(N[(y$46$re / y$46$im), $MachinePrecision] / N[(y$46$im / x$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \leq \infty:\\
\;\;\;\;\frac{1}{\mathsf{hypot}\left(y.re, y.im\right)} \cdot \frac{\mathsf{fma}\left(x.re, y.re, x.im \cdot y.im\right)}{\mathsf{hypot}\left(y.re, y.im\right)}\\

\mathbf{else}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{\frac{y.re}{y.im}}{\frac{y.im}{x.re}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (+.f64 (*.f64 x.re y.re) (*.f64 x.im y.im)) (+.f64 (*.f64 y.re y.re) (*.f64 y.im y.im))) < +inf.0

    1. Initial program 78.7%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Step-by-step derivation
      1. *-un-lft-identity78.7%

        \[\leadsto \frac{\color{blue}{1 \cdot \left(x.re \cdot y.re + x.im \cdot y.im\right)}}{y.re \cdot y.re + y.im \cdot y.im} \]
      2. add-sqr-sqrt78.7%

        \[\leadsto \frac{1 \cdot \left(x.re \cdot y.re + x.im \cdot y.im\right)}{\color{blue}{\sqrt{y.re \cdot y.re + y.im \cdot y.im} \cdot \sqrt{y.re \cdot y.re + y.im \cdot y.im}}} \]
      3. times-frac78.6%

        \[\leadsto \color{blue}{\frac{1}{\sqrt{y.re \cdot y.re + y.im \cdot y.im}} \cdot \frac{x.re \cdot y.re + x.im \cdot y.im}{\sqrt{y.re \cdot y.re + y.im \cdot y.im}}} \]
      4. hypot-def78.6%

        \[\leadsto \frac{1}{\color{blue}{\mathsf{hypot}\left(y.re, y.im\right)}} \cdot \frac{x.re \cdot y.re + x.im \cdot y.im}{\sqrt{y.re \cdot y.re + y.im \cdot y.im}} \]
      5. fma-def78.6%

        \[\leadsto \frac{1}{\mathsf{hypot}\left(y.re, y.im\right)} \cdot \frac{\color{blue}{\mathsf{fma}\left(x.re, y.re, x.im \cdot y.im\right)}}{\sqrt{y.re \cdot y.re + y.im \cdot y.im}} \]
      6. hypot-def95.8%

        \[\leadsto \frac{1}{\mathsf{hypot}\left(y.re, y.im\right)} \cdot \frac{\mathsf{fma}\left(x.re, y.re, x.im \cdot y.im\right)}{\color{blue}{\mathsf{hypot}\left(y.re, y.im\right)}} \]
    3. Applied egg-rr95.8%

      \[\leadsto \color{blue}{\frac{1}{\mathsf{hypot}\left(y.re, y.im\right)} \cdot \frac{\mathsf{fma}\left(x.re, y.re, x.im \cdot y.im\right)}{\mathsf{hypot}\left(y.re, y.im\right)}} \]

    if +inf.0 < (/.f64 (+.f64 (*.f64 x.re y.re) (*.f64 x.im y.im)) (+.f64 (*.f64 y.re y.re) (*.f64 y.im y.im)))

    1. Initial program 0.0%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 49.7%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative49.7%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow249.7%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*50.2%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified50.2%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Step-by-step derivation
      1. clear-num50.2%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}}} \]
      2. inv-pow50.2%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}\right)}^{-1}} \]
      3. associate-/l*52.3%

        \[\leadsto \frac{x.im}{y.im} + {\left(\frac{\color{blue}{\frac{y.im}{\frac{y.re}{y.im}}}}{x.re}\right)}^{-1} \]
    6. Applied egg-rr52.3%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}\right)}^{-1}} \]
    7. Step-by-step derivation
      1. unpow-152.3%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}}} \]
      2. associate-/l/57.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{\color{blue}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
    8. Simplified57.8%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
    9. Step-by-step derivation
      1. associate-/r/57.8%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{y.im} \cdot \left(x.re \cdot \frac{y.re}{y.im}\right)} \]
      2. clear-num57.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{y.im} \cdot \left(x.re \cdot \color{blue}{\frac{1}{\frac{y.im}{y.re}}}\right) \]
      3. un-div-inv57.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{y.im} \cdot \color{blue}{\frac{x.re}{\frac{y.im}{y.re}}} \]
      4. times-frac52.3%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1 \cdot x.re}{y.im \cdot \frac{y.im}{y.re}}} \]
      5. *-un-lft-identity52.3%

        \[\leadsto \frac{x.im}{y.im} + \frac{\color{blue}{x.re}}{y.im \cdot \frac{y.im}{y.re}} \]
      6. associate-/r*57.9%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{\frac{x.re}{y.im}}{\frac{y.im}{y.re}}} \]
      7. div-inv57.8%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{y.im} \cdot \frac{1}{\frac{y.im}{y.re}}} \]
      8. clear-num57.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{y.im} \cdot \color{blue}{\frac{y.re}{y.im}} \]
    10. Applied egg-rr57.8%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{y.im} \cdot \frac{y.re}{y.im}} \]
    11. Step-by-step derivation
      1. *-commutative57.8%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{y.re}{y.im} \cdot \frac{x.re}{y.im}} \]
      2. clear-num57.9%

        \[\leadsto \frac{x.im}{y.im} + \frac{y.re}{y.im} \cdot \color{blue}{\frac{1}{\frac{y.im}{x.re}}} \]
      3. clear-num57.9%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{y.im}{y.re}}} \cdot \frac{1}{\frac{y.im}{x.re}} \]
      4. frac-times57.8%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1 \cdot 1}{\frac{y.im}{y.re} \cdot \frac{y.im}{x.re}}} \]
      5. metadata-eval57.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{\color{blue}{1}}{\frac{y.im}{y.re} \cdot \frac{y.im}{x.re}} \]
      6. associate-/r*57.9%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{\frac{1}{\frac{y.im}{y.re}}}{\frac{y.im}{x.re}}} \]
      7. clear-num57.9%

        \[\leadsto \frac{x.im}{y.im} + \frac{\color{blue}{\frac{y.re}{y.im}}}{\frac{y.im}{x.re}} \]
    12. Applied egg-rr57.9%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{\frac{y.re}{y.im}}{\frac{y.im}{x.re}}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification89.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \leq \infty:\\ \;\;\;\;\frac{1}{\mathsf{hypot}\left(y.re, y.im\right)} \cdot \frac{\mathsf{fma}\left(x.re, y.re, x.im \cdot y.im\right)}{\mathsf{hypot}\left(y.re, y.im\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{\frac{y.re}{y.im}}{\frac{y.im}{x.re}}\\ \end{array} \]

Alternative 2: 80.8% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im}\\ t_1 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{if}\;y.re \leq -5.5 \cdot 10^{+84}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;y.re \leq -3.25 \cdot 10^{-201}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;y.re \leq 2.3 \cdot 10^{-25}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}\\ \mathbf{elif}\;y.re \leq 1.02 \cdot 10^{+95}:\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (let* ((t_0
         (/ (+ (* x.re y.re) (* x.im y.im)) (+ (* y.re y.re) (* y.im y.im))))
        (t_1 (+ (/ x.re y.re) (* (/ y.im y.re) (/ x.im y.re)))))
   (if (<= y.re -5.5e+84)
     t_1
     (if (<= y.re -3.25e-201)
       t_0
       (if (<= y.re 2.3e-25)
         (+ (/ x.im y.im) (/ 1.0 (/ y.im (* x.re (/ y.re y.im)))))
         (if (<= y.re 1.02e+95) t_0 t_1))))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
	double t_1 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -5.5e+84) {
		tmp = t_1;
	} else if (y_46_re <= -3.25e-201) {
		tmp = t_0;
	} else if (y_46_re <= 2.3e-25) {
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))));
	} else if (y_46_re <= 1.02e+95) {
		tmp = t_0;
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: t_0
    real(8) :: t_1
    real(8) :: tmp
    t_0 = ((x_46re * y_46re) + (x_46im * y_46im)) / ((y_46re * y_46re) + (y_46im * y_46im))
    t_1 = (x_46re / y_46re) + ((y_46im / y_46re) * (x_46im / y_46re))
    if (y_46re <= (-5.5d+84)) then
        tmp = t_1
    else if (y_46re <= (-3.25d-201)) then
        tmp = t_0
    else if (y_46re <= 2.3d-25) then
        tmp = (x_46im / y_46im) + (1.0d0 / (y_46im / (x_46re * (y_46re / y_46im))))
    else if (y_46re <= 1.02d+95) then
        tmp = t_0
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
	double t_1 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -5.5e+84) {
		tmp = t_1;
	} else if (y_46_re <= -3.25e-201) {
		tmp = t_0;
	} else if (y_46_re <= 2.3e-25) {
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))));
	} else if (y_46_re <= 1.02e+95) {
		tmp = t_0;
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	t_0 = ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im))
	t_1 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re))
	tmp = 0
	if y_46_re <= -5.5e+84:
		tmp = t_1
	elif y_46_re <= -3.25e-201:
		tmp = t_0
	elif y_46_re <= 2.3e-25:
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))))
	elif y_46_re <= 1.02e+95:
		tmp = t_0
	else:
		tmp = t_1
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = Float64(Float64(Float64(x_46_re * y_46_re) + Float64(x_46_im * y_46_im)) / Float64(Float64(y_46_re * y_46_re) + Float64(y_46_im * y_46_im)))
	t_1 = Float64(Float64(x_46_re / y_46_re) + Float64(Float64(y_46_im / y_46_re) * Float64(x_46_im / y_46_re)))
	tmp = 0.0
	if (y_46_re <= -5.5e+84)
		tmp = t_1;
	elseif (y_46_re <= -3.25e-201)
		tmp = t_0;
	elseif (y_46_re <= 2.3e-25)
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(1.0 / Float64(y_46_im / Float64(x_46_re * Float64(y_46_re / y_46_im)))));
	elseif (y_46_re <= 1.02e+95)
		tmp = t_0;
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = ((x_46_re * y_46_re) + (x_46_im * y_46_im)) / ((y_46_re * y_46_re) + (y_46_im * y_46_im));
	t_1 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	tmp = 0.0;
	if (y_46_re <= -5.5e+84)
		tmp = t_1;
	elseif (y_46_re <= -3.25e-201)
		tmp = t_0;
	elseif (y_46_re <= 2.3e-25)
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))));
	elseif (y_46_re <= 1.02e+95)
		tmp = t_0;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := Block[{t$95$0 = N[(N[(N[(x$46$re * y$46$re), $MachinePrecision] + N[(x$46$im * y$46$im), $MachinePrecision]), $MachinePrecision] / N[(N[(y$46$re * y$46$re), $MachinePrecision] + N[(y$46$im * y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[(N[(x$46$re / y$46$re), $MachinePrecision] + N[(N[(y$46$im / y$46$re), $MachinePrecision] * N[(x$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[y$46$re, -5.5e+84], t$95$1, If[LessEqual[y$46$re, -3.25e-201], t$95$0, If[LessEqual[y$46$re, 2.3e-25], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(1.0 / N[(y$46$im / N[(x$46$re * N[(y$46$re / y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y$46$re, 1.02e+95], t$95$0, t$95$1]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := \frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im}\\
t_1 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\
\mathbf{if}\;y.re \leq -5.5 \cdot 10^{+84}:\\
\;\;\;\;t_1\\

\mathbf{elif}\;y.re \leq -3.25 \cdot 10^{-201}:\\
\;\;\;\;t_0\\

\mathbf{elif}\;y.re \leq 2.3 \cdot 10^{-25}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}\\

\mathbf{elif}\;y.re \leq 1.02 \cdot 10^{+95}:\\
\;\;\;\;t_0\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y.re < -5.5000000000000004e84 or 1.0200000000000001e95 < y.re

    1. Initial program 41.7%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 79.5%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im \cdot x.im}{{y.re}^{2}}} \]
    3. Step-by-step derivation
      1. unpow279.5%

        \[\leadsto \frac{x.re}{y.re} + \frac{y.im \cdot x.im}{\color{blue}{y.re \cdot y.re}} \]
      2. times-frac89.6%

        \[\leadsto \frac{x.re}{y.re} + \color{blue}{\frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]
    4. Simplified89.6%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]

    if -5.5000000000000004e84 < y.re < -3.24999999999999987e-201 or 2.2999999999999999e-25 < y.re < 1.0200000000000001e95

    1. Initial program 80.8%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]

    if -3.24999999999999987e-201 < y.re < 2.2999999999999999e-25

    1. Initial program 70.0%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 85.5%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative85.5%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow285.5%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*87.0%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified87.0%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Step-by-step derivation
      1. clear-num87.0%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}}} \]
      2. inv-pow87.0%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}\right)}^{-1}} \]
      3. associate-/l*93.0%

        \[\leadsto \frac{x.im}{y.im} + {\left(\frac{\color{blue}{\frac{y.im}{\frac{y.re}{y.im}}}}{x.re}\right)}^{-1} \]
    6. Applied egg-rr93.0%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}\right)}^{-1}} \]
    7. Step-by-step derivation
      1. unpow-193.0%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}}} \]
      2. associate-/l/93.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{\color{blue}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
    8. Simplified93.1%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification87.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -5.5 \cdot 10^{+84}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{elif}\;y.re \leq -3.25 \cdot 10^{-201}:\\ \;\;\;\;\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im}\\ \mathbf{elif}\;y.re \leq 2.3 \cdot 10^{-25}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}\\ \mathbf{elif}\;y.re \leq 1.02 \cdot 10^{+95}:\\ \;\;\;\;\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \end{array} \]

Alternative 3: 75.6% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{if}\;y.re \leq -2.8 \cdot 10^{-5}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;y.re \leq 1.8 \cdot 10^{-23}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\ \mathbf{elif}\;y.re \leq 3 \cdot 10^{+24} \lor \neg \left(y.re \leq 2.6 \cdot 10^{+53}\right):\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (let* ((t_0 (+ (/ x.re y.re) (* (/ y.im y.re) (/ x.im y.re)))))
   (if (<= y.re -2.8e-5)
     t_0
     (if (<= y.re 1.8e-23)
       (+ (/ x.im y.im) (/ x.re (* y.im (/ y.im y.re))))
       (if (or (<= y.re 3e+24) (not (<= y.re 2.6e+53))) t_0 (/ x.im y.im))))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -2.8e-5) {
		tmp = t_0;
	} else if (y_46_re <= 1.8e-23) {
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	} else if ((y_46_re <= 3e+24) || !(y_46_re <= 2.6e+53)) {
		tmp = t_0;
	} else {
		tmp = x_46_im / y_46_im;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: t_0
    real(8) :: tmp
    t_0 = (x_46re / y_46re) + ((y_46im / y_46re) * (x_46im / y_46re))
    if (y_46re <= (-2.8d-5)) then
        tmp = t_0
    else if (y_46re <= 1.8d-23) then
        tmp = (x_46im / y_46im) + (x_46re / (y_46im * (y_46im / y_46re)))
    else if ((y_46re <= 3d+24) .or. (.not. (y_46re <= 2.6d+53))) then
        tmp = t_0
    else
        tmp = x_46im / y_46im
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -2.8e-5) {
		tmp = t_0;
	} else if (y_46_re <= 1.8e-23) {
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	} else if ((y_46_re <= 3e+24) || !(y_46_re <= 2.6e+53)) {
		tmp = t_0;
	} else {
		tmp = x_46_im / y_46_im;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re))
	tmp = 0
	if y_46_re <= -2.8e-5:
		tmp = t_0
	elif y_46_re <= 1.8e-23:
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)))
	elif (y_46_re <= 3e+24) or not (y_46_re <= 2.6e+53):
		tmp = t_0
	else:
		tmp = x_46_im / y_46_im
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = Float64(Float64(x_46_re / y_46_re) + Float64(Float64(y_46_im / y_46_re) * Float64(x_46_im / y_46_re)))
	tmp = 0.0
	if (y_46_re <= -2.8e-5)
		tmp = t_0;
	elseif (y_46_re <= 1.8e-23)
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(x_46_re / Float64(y_46_im * Float64(y_46_im / y_46_re))));
	elseif ((y_46_re <= 3e+24) || !(y_46_re <= 2.6e+53))
		tmp = t_0;
	else
		tmp = Float64(x_46_im / y_46_im);
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	tmp = 0.0;
	if (y_46_re <= -2.8e-5)
		tmp = t_0;
	elseif (y_46_re <= 1.8e-23)
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	elseif ((y_46_re <= 3e+24) || ~((y_46_re <= 2.6e+53)))
		tmp = t_0;
	else
		tmp = x_46_im / y_46_im;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := Block[{t$95$0 = N[(N[(x$46$re / y$46$re), $MachinePrecision] + N[(N[(y$46$im / y$46$re), $MachinePrecision] * N[(x$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[y$46$re, -2.8e-5], t$95$0, If[LessEqual[y$46$re, 1.8e-23], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(x$46$re / N[(y$46$im * N[(y$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Or[LessEqual[y$46$re, 3e+24], N[Not[LessEqual[y$46$re, 2.6e+53]], $MachinePrecision]], t$95$0, N[(x$46$im / y$46$im), $MachinePrecision]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\
\mathbf{if}\;y.re \leq -2.8 \cdot 10^{-5}:\\
\;\;\;\;t_0\\

\mathbf{elif}\;y.re \leq 1.8 \cdot 10^{-23}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\

\mathbf{elif}\;y.re \leq 3 \cdot 10^{+24} \lor \neg \left(y.re \leq 2.6 \cdot 10^{+53}\right):\\
\;\;\;\;t_0\\

\mathbf{else}:\\
\;\;\;\;\frac{x.im}{y.im}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y.re < -2.79999999999999996e-5 or 1.7999999999999999e-23 < y.re < 2.99999999999999995e24 or 2.59999999999999998e53 < y.re

    1. Initial program 55.1%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 74.9%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im \cdot x.im}{{y.re}^{2}}} \]
    3. Step-by-step derivation
      1. unpow274.9%

        \[\leadsto \frac{x.re}{y.re} + \frac{y.im \cdot x.im}{\color{blue}{y.re \cdot y.re}} \]
      2. times-frac81.8%

        \[\leadsto \frac{x.re}{y.re} + \color{blue}{\frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]
    4. Simplified81.8%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]

    if -2.79999999999999996e-5 < y.re < 1.7999999999999999e-23

    1. Initial program 73.4%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 81.9%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative81.9%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow281.9%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*82.1%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified82.1%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Taylor expanded in y.im around 0 82.1%

      \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{\frac{{y.im}^{2}}{y.re}}} \]
    6. Step-by-step derivation
      1. unpow282.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\frac{\color{blue}{y.im \cdot y.im}}{y.re}} \]
      2. associate-*r/86.0%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{y.im \cdot \frac{y.im}{y.re}}} \]
    7. Simplified86.0%

      \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{y.im \cdot \frac{y.im}{y.re}}} \]

    if 2.99999999999999995e24 < y.re < 2.59999999999999998e53

    1. Initial program 77.6%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 78.7%

      \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification83.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -2.8 \cdot 10^{-5}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{elif}\;y.re \leq 1.8 \cdot 10^{-23}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\ \mathbf{elif}\;y.re \leq 3 \cdot 10^{+24} \lor \neg \left(y.re \leq 2.6 \cdot 10^{+53}\right):\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \end{array} \]

Alternative 4: 75.7% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{if}\;y.re \leq -0.35:\\ \;\;\;\;t_0\\ \mathbf{elif}\;y.re \leq 1.2 \cdot 10^{-24}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\ \mathbf{elif}\;y.re \leq 3.4 \cdot 10^{+24}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}\\ \mathbf{elif}\;y.re \leq 2.25 \cdot 10^{+52}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (let* ((t_0 (+ (/ x.re y.re) (* (/ y.im y.re) (/ x.im y.re)))))
   (if (<= y.re -0.35)
     t_0
     (if (<= y.re 1.2e-24)
       (+ (/ x.im y.im) (/ x.re (* y.im (/ y.im y.re))))
       (if (<= y.re 3.4e+24)
         (+ (/ x.re y.re) (/ y.im (/ (* y.re y.re) x.im)))
         (if (<= y.re 2.25e+52) (/ x.im y.im) t_0))))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -0.35) {
		tmp = t_0;
	} else if (y_46_re <= 1.2e-24) {
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	} else if (y_46_re <= 3.4e+24) {
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im));
	} else if (y_46_re <= 2.25e+52) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = t_0;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: t_0
    real(8) :: tmp
    t_0 = (x_46re / y_46re) + ((y_46im / y_46re) * (x_46im / y_46re))
    if (y_46re <= (-0.35d0)) then
        tmp = t_0
    else if (y_46re <= 1.2d-24) then
        tmp = (x_46im / y_46im) + (x_46re / (y_46im * (y_46im / y_46re)))
    else if (y_46re <= 3.4d+24) then
        tmp = (x_46re / y_46re) + (y_46im / ((y_46re * y_46re) / x_46im))
    else if (y_46re <= 2.25d+52) then
        tmp = x_46im / y_46im
    else
        tmp = t_0
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -0.35) {
		tmp = t_0;
	} else if (y_46_re <= 1.2e-24) {
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	} else if (y_46_re <= 3.4e+24) {
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im));
	} else if (y_46_re <= 2.25e+52) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = t_0;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re))
	tmp = 0
	if y_46_re <= -0.35:
		tmp = t_0
	elif y_46_re <= 1.2e-24:
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)))
	elif y_46_re <= 3.4e+24:
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im))
	elif y_46_re <= 2.25e+52:
		tmp = x_46_im / y_46_im
	else:
		tmp = t_0
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = Float64(Float64(x_46_re / y_46_re) + Float64(Float64(y_46_im / y_46_re) * Float64(x_46_im / y_46_re)))
	tmp = 0.0
	if (y_46_re <= -0.35)
		tmp = t_0;
	elseif (y_46_re <= 1.2e-24)
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(x_46_re / Float64(y_46_im * Float64(y_46_im / y_46_re))));
	elseif (y_46_re <= 3.4e+24)
		tmp = Float64(Float64(x_46_re / y_46_re) + Float64(y_46_im / Float64(Float64(y_46_re * y_46_re) / x_46_im)));
	elseif (y_46_re <= 2.25e+52)
		tmp = Float64(x_46_im / y_46_im);
	else
		tmp = t_0;
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	tmp = 0.0;
	if (y_46_re <= -0.35)
		tmp = t_0;
	elseif (y_46_re <= 1.2e-24)
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	elseif (y_46_re <= 3.4e+24)
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im));
	elseif (y_46_re <= 2.25e+52)
		tmp = x_46_im / y_46_im;
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := Block[{t$95$0 = N[(N[(x$46$re / y$46$re), $MachinePrecision] + N[(N[(y$46$im / y$46$re), $MachinePrecision] * N[(x$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[y$46$re, -0.35], t$95$0, If[LessEqual[y$46$re, 1.2e-24], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(x$46$re / N[(y$46$im * N[(y$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y$46$re, 3.4e+24], N[(N[(x$46$re / y$46$re), $MachinePrecision] + N[(y$46$im / N[(N[(y$46$re * y$46$re), $MachinePrecision] / x$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y$46$re, 2.25e+52], N[(x$46$im / y$46$im), $MachinePrecision], t$95$0]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\
\mathbf{if}\;y.re \leq -0.35:\\
\;\;\;\;t_0\\

\mathbf{elif}\;y.re \leq 1.2 \cdot 10^{-24}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\

\mathbf{elif}\;y.re \leq 3.4 \cdot 10^{+24}:\\
\;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}\\

\mathbf{elif}\;y.re \leq 2.25 \cdot 10^{+52}:\\
\;\;\;\;\frac{x.im}{y.im}\\

\mathbf{else}:\\
\;\;\;\;t_0\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if y.re < -0.34999999999999998 or 2.25e52 < y.re

    1. Initial program 52.1%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 74.0%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im \cdot x.im}{{y.re}^{2}}} \]
    3. Step-by-step derivation
      1. unpow274.0%

        \[\leadsto \frac{x.re}{y.re} + \frac{y.im \cdot x.im}{\color{blue}{y.re \cdot y.re}} \]
      2. times-frac81.4%

        \[\leadsto \frac{x.re}{y.re} + \color{blue}{\frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]
    4. Simplified81.4%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]

    if -0.34999999999999998 < y.re < 1.1999999999999999e-24

    1. Initial program 73.4%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 81.9%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative81.9%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow281.9%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*82.1%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified82.1%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Taylor expanded in y.im around 0 82.1%

      \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{\frac{{y.im}^{2}}{y.re}}} \]
    6. Step-by-step derivation
      1. unpow282.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\frac{\color{blue}{y.im \cdot y.im}}{y.re}} \]
      2. associate-*r/86.0%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{y.im \cdot \frac{y.im}{y.re}}} \]
    7. Simplified86.0%

      \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{y.im \cdot \frac{y.im}{y.re}}} \]

    if 1.1999999999999999e-24 < y.re < 3.4000000000000001e24

    1. Initial program 99.8%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 80.8%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im \cdot x.im}{{y.re}^{2}}} \]
    3. Step-by-step derivation
      1. unpow280.8%

        \[\leadsto \frac{x.re}{y.re} + \frac{y.im \cdot x.im}{\color{blue}{y.re \cdot y.re}} \]
      2. associate-/l*80.8%

        \[\leadsto \frac{x.re}{y.re} + \color{blue}{\frac{y.im}{\frac{y.re \cdot y.re}{x.im}}} \]
    4. Simplified80.8%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}} \]

    if 3.4000000000000001e24 < y.re < 2.25e52

    1. Initial program 71.2%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 86.3%

      \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Recombined 4 regimes into one program.
  4. Final simplification83.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -0.35:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{elif}\;y.re \leq 1.2 \cdot 10^{-24}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\ \mathbf{elif}\;y.re \leq 3.4 \cdot 10^{+24}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}\\ \mathbf{elif}\;y.re \leq 2.25 \cdot 10^{+52}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \end{array} \]

Alternative 5: 76.7% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{if}\;y.re \leq -6.6 \cdot 10^{-8}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;y.re \leq 1.9 \cdot 10^{-23}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}\\ \mathbf{elif}\;y.re \leq 2.2 \cdot 10^{+24}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}\\ \mathbf{elif}\;y.re \leq 2.2 \cdot 10^{+52}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (let* ((t_0 (+ (/ x.re y.re) (* (/ y.im y.re) (/ x.im y.re)))))
   (if (<= y.re -6.6e-8)
     t_0
     (if (<= y.re 1.9e-23)
       (+ (/ x.im y.im) (/ 1.0 (/ y.im (* x.re (/ y.re y.im)))))
       (if (<= y.re 2.2e+24)
         (+ (/ x.re y.re) (/ y.im (/ (* y.re y.re) x.im)))
         (if (<= y.re 2.2e+52) (/ x.im y.im) t_0))))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -6.6e-8) {
		tmp = t_0;
	} else if (y_46_re <= 1.9e-23) {
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))));
	} else if (y_46_re <= 2.2e+24) {
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im));
	} else if (y_46_re <= 2.2e+52) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = t_0;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: t_0
    real(8) :: tmp
    t_0 = (x_46re / y_46re) + ((y_46im / y_46re) * (x_46im / y_46re))
    if (y_46re <= (-6.6d-8)) then
        tmp = t_0
    else if (y_46re <= 1.9d-23) then
        tmp = (x_46im / y_46im) + (1.0d0 / (y_46im / (x_46re * (y_46re / y_46im))))
    else if (y_46re <= 2.2d+24) then
        tmp = (x_46re / y_46re) + (y_46im / ((y_46re * y_46re) / x_46im))
    else if (y_46re <= 2.2d+52) then
        tmp = x_46im / y_46im
    else
        tmp = t_0
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	double tmp;
	if (y_46_re <= -6.6e-8) {
		tmp = t_0;
	} else if (y_46_re <= 1.9e-23) {
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))));
	} else if (y_46_re <= 2.2e+24) {
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im));
	} else if (y_46_re <= 2.2e+52) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = t_0;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re))
	tmp = 0
	if y_46_re <= -6.6e-8:
		tmp = t_0
	elif y_46_re <= 1.9e-23:
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))))
	elif y_46_re <= 2.2e+24:
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im))
	elif y_46_re <= 2.2e+52:
		tmp = x_46_im / y_46_im
	else:
		tmp = t_0
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = Float64(Float64(x_46_re / y_46_re) + Float64(Float64(y_46_im / y_46_re) * Float64(x_46_im / y_46_re)))
	tmp = 0.0
	if (y_46_re <= -6.6e-8)
		tmp = t_0;
	elseif (y_46_re <= 1.9e-23)
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(1.0 / Float64(y_46_im / Float64(x_46_re * Float64(y_46_re / y_46_im)))));
	elseif (y_46_re <= 2.2e+24)
		tmp = Float64(Float64(x_46_re / y_46_re) + Float64(y_46_im / Float64(Float64(y_46_re * y_46_re) / x_46_im)));
	elseif (y_46_re <= 2.2e+52)
		tmp = Float64(x_46_im / y_46_im);
	else
		tmp = t_0;
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	t_0 = (x_46_re / y_46_re) + ((y_46_im / y_46_re) * (x_46_im / y_46_re));
	tmp = 0.0;
	if (y_46_re <= -6.6e-8)
		tmp = t_0;
	elseif (y_46_re <= 1.9e-23)
		tmp = (x_46_im / y_46_im) + (1.0 / (y_46_im / (x_46_re * (y_46_re / y_46_im))));
	elseif (y_46_re <= 2.2e+24)
		tmp = (x_46_re / y_46_re) + (y_46_im / ((y_46_re * y_46_re) / x_46_im));
	elseif (y_46_re <= 2.2e+52)
		tmp = x_46_im / y_46_im;
	else
		tmp = t_0;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := Block[{t$95$0 = N[(N[(x$46$re / y$46$re), $MachinePrecision] + N[(N[(y$46$im / y$46$re), $MachinePrecision] * N[(x$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[y$46$re, -6.6e-8], t$95$0, If[LessEqual[y$46$re, 1.9e-23], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(1.0 / N[(y$46$im / N[(x$46$re * N[(y$46$re / y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y$46$re, 2.2e+24], N[(N[(x$46$re / y$46$re), $MachinePrecision] + N[(y$46$im / N[(N[(y$46$re * y$46$re), $MachinePrecision] / x$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y$46$re, 2.2e+52], N[(x$46$im / y$46$im), $MachinePrecision], t$95$0]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := \frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\
\mathbf{if}\;y.re \leq -6.6 \cdot 10^{-8}:\\
\;\;\;\;t_0\\

\mathbf{elif}\;y.re \leq 1.9 \cdot 10^{-23}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}\\

\mathbf{elif}\;y.re \leq 2.2 \cdot 10^{+24}:\\
\;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}\\

\mathbf{elif}\;y.re \leq 2.2 \cdot 10^{+52}:\\
\;\;\;\;\frac{x.im}{y.im}\\

\mathbf{else}:\\
\;\;\;\;t_0\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if y.re < -6.59999999999999954e-8 or 2.2e52 < y.re

    1. Initial program 52.1%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 74.0%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im \cdot x.im}{{y.re}^{2}}} \]
    3. Step-by-step derivation
      1. unpow274.0%

        \[\leadsto \frac{x.re}{y.re} + \frac{y.im \cdot x.im}{\color{blue}{y.re \cdot y.re}} \]
      2. times-frac81.4%

        \[\leadsto \frac{x.re}{y.re} + \color{blue}{\frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]
    4. Simplified81.4%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}} \]

    if -6.59999999999999954e-8 < y.re < 1.90000000000000006e-23

    1. Initial program 73.4%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 81.9%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative81.9%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow281.9%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*82.1%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified82.1%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Step-by-step derivation
      1. clear-num82.1%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}}} \]
      2. inv-pow82.1%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}\right)}^{-1}} \]
      3. associate-/l*86.0%

        \[\leadsto \frac{x.im}{y.im} + {\left(\frac{\color{blue}{\frac{y.im}{\frac{y.re}{y.im}}}}{x.re}\right)}^{-1} \]
    6. Applied egg-rr86.0%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}\right)}^{-1}} \]
    7. Step-by-step derivation
      1. unpow-186.0%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}}} \]
      2. associate-/l/86.6%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{\color{blue}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
    8. Simplified86.6%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]

    if 1.90000000000000006e-23 < y.re < 2.20000000000000002e24

    1. Initial program 99.8%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 80.8%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im \cdot x.im}{{y.re}^{2}}} \]
    3. Step-by-step derivation
      1. unpow280.8%

        \[\leadsto \frac{x.re}{y.re} + \frac{y.im \cdot x.im}{\color{blue}{y.re \cdot y.re}} \]
      2. associate-/l*80.8%

        \[\leadsto \frac{x.re}{y.re} + \color{blue}{\frac{y.im}{\frac{y.re \cdot y.re}{x.im}}} \]
    4. Simplified80.8%

      \[\leadsto \color{blue}{\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}} \]

    if 2.20000000000000002e24 < y.re < 2.2e52

    1. Initial program 71.2%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 86.3%

      \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Recombined 4 regimes into one program.
  4. Final simplification84.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -6.6 \cdot 10^{-8}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \mathbf{elif}\;y.re \leq 1.9 \cdot 10^{-23}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}\\ \mathbf{elif}\;y.re \leq 2.2 \cdot 10^{+24}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{\frac{y.re \cdot y.re}{x.im}}\\ \mathbf{elif}\;y.re \leq 2.2 \cdot 10^{+52}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re} + \frac{y.im}{y.re} \cdot \frac{x.im}{y.re}\\ \end{array} \]

Alternative 6: 70.4% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y.re \leq -3.4 \cdot 10^{+80}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 3.5 \cdot 10^{-24}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{y.re}{y.im} \cdot \frac{x.re}{y.im}\\ \mathbf{elif}\;y.re \leq 1.3 \cdot 10^{+24}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 6 \cdot 10^{+53}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (if (<= y.re -3.4e+80)
   (/ x.re y.re)
   (if (<= y.re 3.5e-24)
     (+ (/ x.im y.im) (* (/ y.re y.im) (/ x.re y.im)))
     (if (<= y.re 1.3e+24)
       (/ x.re y.re)
       (if (<= y.re 6e+53) (/ x.im y.im) (/ x.re y.re))))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if (y_46_re <= -3.4e+80) {
		tmp = x_46_re / y_46_re;
	} else if (y_46_re <= 3.5e-24) {
		tmp = (x_46_im / y_46_im) + ((y_46_re / y_46_im) * (x_46_re / y_46_im));
	} else if (y_46_re <= 1.3e+24) {
		tmp = x_46_re / y_46_re;
	} else if (y_46_re <= 6e+53) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = x_46_re / y_46_re;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: tmp
    if (y_46re <= (-3.4d+80)) then
        tmp = x_46re / y_46re
    else if (y_46re <= 3.5d-24) then
        tmp = (x_46im / y_46im) + ((y_46re / y_46im) * (x_46re / y_46im))
    else if (y_46re <= 1.3d+24) then
        tmp = x_46re / y_46re
    else if (y_46re <= 6d+53) then
        tmp = x_46im / y_46im
    else
        tmp = x_46re / y_46re
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if (y_46_re <= -3.4e+80) {
		tmp = x_46_re / y_46_re;
	} else if (y_46_re <= 3.5e-24) {
		tmp = (x_46_im / y_46_im) + ((y_46_re / y_46_im) * (x_46_re / y_46_im));
	} else if (y_46_re <= 1.3e+24) {
		tmp = x_46_re / y_46_re;
	} else if (y_46_re <= 6e+53) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = x_46_re / y_46_re;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	tmp = 0
	if y_46_re <= -3.4e+80:
		tmp = x_46_re / y_46_re
	elif y_46_re <= 3.5e-24:
		tmp = (x_46_im / y_46_im) + ((y_46_re / y_46_im) * (x_46_re / y_46_im))
	elif y_46_re <= 1.3e+24:
		tmp = x_46_re / y_46_re
	elif y_46_re <= 6e+53:
		tmp = x_46_im / y_46_im
	else:
		tmp = x_46_re / y_46_re
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0
	if (y_46_re <= -3.4e+80)
		tmp = Float64(x_46_re / y_46_re);
	elseif (y_46_re <= 3.5e-24)
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(Float64(y_46_re / y_46_im) * Float64(x_46_re / y_46_im)));
	elseif (y_46_re <= 1.3e+24)
		tmp = Float64(x_46_re / y_46_re);
	elseif (y_46_re <= 6e+53)
		tmp = Float64(x_46_im / y_46_im);
	else
		tmp = Float64(x_46_re / y_46_re);
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0;
	if (y_46_re <= -3.4e+80)
		tmp = x_46_re / y_46_re;
	elseif (y_46_re <= 3.5e-24)
		tmp = (x_46_im / y_46_im) + ((y_46_re / y_46_im) * (x_46_re / y_46_im));
	elseif (y_46_re <= 1.3e+24)
		tmp = x_46_re / y_46_re;
	elseif (y_46_re <= 6e+53)
		tmp = x_46_im / y_46_im;
	else
		tmp = x_46_re / y_46_re;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := If[LessEqual[y$46$re, -3.4e+80], N[(x$46$re / y$46$re), $MachinePrecision], If[LessEqual[y$46$re, 3.5e-24], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(N[(y$46$re / y$46$im), $MachinePrecision] * N[(x$46$re / y$46$im), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y$46$re, 1.3e+24], N[(x$46$re / y$46$re), $MachinePrecision], If[LessEqual[y$46$re, 6e+53], N[(x$46$im / y$46$im), $MachinePrecision], N[(x$46$re / y$46$re), $MachinePrecision]]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y.re \leq -3.4 \cdot 10^{+80}:\\
\;\;\;\;\frac{x.re}{y.re}\\

\mathbf{elif}\;y.re \leq 3.5 \cdot 10^{-24}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{y.re}{y.im} \cdot \frac{x.re}{y.im}\\

\mathbf{elif}\;y.re \leq 1.3 \cdot 10^{+24}:\\
\;\;\;\;\frac{x.re}{y.re}\\

\mathbf{elif}\;y.re \leq 6 \cdot 10^{+53}:\\
\;\;\;\;\frac{x.im}{y.im}\\

\mathbf{else}:\\
\;\;\;\;\frac{x.re}{y.re}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y.re < -3.39999999999999992e80 or 3.4999999999999996e-24 < y.re < 1.2999999999999999e24 or 5.99999999999999996e53 < y.re

    1. Initial program 51.8%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 72.6%

      \[\leadsto \color{blue}{\frac{x.re}{y.re}} \]

    if -3.39999999999999992e80 < y.re < 3.4999999999999996e-24

    1. Initial program 73.5%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 76.8%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative76.8%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow276.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*77.7%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified77.7%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Step-by-step derivation
      1. clear-num77.7%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}}} \]
      2. inv-pow77.7%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im \cdot y.im}{y.re}}{x.re}\right)}^{-1}} \]
      3. associate-/l*81.0%

        \[\leadsto \frac{x.im}{y.im} + {\left(\frac{\color{blue}{\frac{y.im}{\frac{y.re}{y.im}}}}{x.re}\right)}^{-1} \]
    6. Applied egg-rr81.0%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{{\left(\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}\right)}^{-1}} \]
    7. Step-by-step derivation
      1. unpow-181.0%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{\frac{y.im}{\frac{y.re}{y.im}}}{x.re}}} \]
      2. associate-/l/81.6%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{\color{blue}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
    8. Simplified81.6%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{\frac{y.im}{x.re \cdot \frac{y.re}{y.im}}}} \]
    9. Step-by-step derivation
      1. associate-/r/81.6%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1}{y.im} \cdot \left(x.re \cdot \frac{y.re}{y.im}\right)} \]
      2. clear-num81.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{y.im} \cdot \left(x.re \cdot \color{blue}{\frac{1}{\frac{y.im}{y.re}}}\right) \]
      3. un-div-inv81.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{1}{y.im} \cdot \color{blue}{\frac{x.re}{\frac{y.im}{y.re}}} \]
      4. times-frac81.1%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{1 \cdot x.re}{y.im \cdot \frac{y.im}{y.re}}} \]
      5. *-un-lft-identity81.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{\color{blue}{x.re}}{y.im \cdot \frac{y.im}{y.re}} \]
      6. associate-/r*80.5%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{\frac{x.re}{y.im}}{\frac{y.im}{y.re}}} \]
      7. div-inv80.5%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{y.im} \cdot \frac{1}{\frac{y.im}{y.re}}} \]
      8. clear-num81.0%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{y.im} \cdot \color{blue}{\frac{y.re}{y.im}} \]
    10. Applied egg-rr81.0%

      \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{y.im} \cdot \frac{y.re}{y.im}} \]

    if 1.2999999999999999e24 < y.re < 5.99999999999999996e53

    1. Initial program 77.6%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 78.7%

      \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification77.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -3.4 \cdot 10^{+80}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 3.5 \cdot 10^{-24}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{y.re}{y.im} \cdot \frac{x.re}{y.im}\\ \mathbf{elif}\;y.re \leq 1.3 \cdot 10^{+24}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 6 \cdot 10^{+53}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \end{array} \]

Alternative 7: 70.0% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y.re \leq -4.4 \cdot 10^{+80}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 1.1 \cdot 10^{-23}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\ \mathbf{elif}\;y.re \leq 1.25 \cdot 10^{+24} \lor \neg \left(y.re \leq 2.35 \cdot 10^{+53}\right):\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (if (<= y.re -4.4e+80)
   (/ x.re y.re)
   (if (<= y.re 1.1e-23)
     (+ (/ x.im y.im) (/ x.re (* y.im (/ y.im y.re))))
     (if (or (<= y.re 1.25e+24) (not (<= y.re 2.35e+53)))
       (/ x.re y.re)
       (/ x.im y.im)))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if (y_46_re <= -4.4e+80) {
		tmp = x_46_re / y_46_re;
	} else if (y_46_re <= 1.1e-23) {
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	} else if ((y_46_re <= 1.25e+24) || !(y_46_re <= 2.35e+53)) {
		tmp = x_46_re / y_46_re;
	} else {
		tmp = x_46_im / y_46_im;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: tmp
    if (y_46re <= (-4.4d+80)) then
        tmp = x_46re / y_46re
    else if (y_46re <= 1.1d-23) then
        tmp = (x_46im / y_46im) + (x_46re / (y_46im * (y_46im / y_46re)))
    else if ((y_46re <= 1.25d+24) .or. (.not. (y_46re <= 2.35d+53))) then
        tmp = x_46re / y_46re
    else
        tmp = x_46im / y_46im
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if (y_46_re <= -4.4e+80) {
		tmp = x_46_re / y_46_re;
	} else if (y_46_re <= 1.1e-23) {
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	} else if ((y_46_re <= 1.25e+24) || !(y_46_re <= 2.35e+53)) {
		tmp = x_46_re / y_46_re;
	} else {
		tmp = x_46_im / y_46_im;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	tmp = 0
	if y_46_re <= -4.4e+80:
		tmp = x_46_re / y_46_re
	elif y_46_re <= 1.1e-23:
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)))
	elif (y_46_re <= 1.25e+24) or not (y_46_re <= 2.35e+53):
		tmp = x_46_re / y_46_re
	else:
		tmp = x_46_im / y_46_im
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0
	if (y_46_re <= -4.4e+80)
		tmp = Float64(x_46_re / y_46_re);
	elseif (y_46_re <= 1.1e-23)
		tmp = Float64(Float64(x_46_im / y_46_im) + Float64(x_46_re / Float64(y_46_im * Float64(y_46_im / y_46_re))));
	elseif ((y_46_re <= 1.25e+24) || !(y_46_re <= 2.35e+53))
		tmp = Float64(x_46_re / y_46_re);
	else
		tmp = Float64(x_46_im / y_46_im);
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0;
	if (y_46_re <= -4.4e+80)
		tmp = x_46_re / y_46_re;
	elseif (y_46_re <= 1.1e-23)
		tmp = (x_46_im / y_46_im) + (x_46_re / (y_46_im * (y_46_im / y_46_re)));
	elseif ((y_46_re <= 1.25e+24) || ~((y_46_re <= 2.35e+53)))
		tmp = x_46_re / y_46_re;
	else
		tmp = x_46_im / y_46_im;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := If[LessEqual[y$46$re, -4.4e+80], N[(x$46$re / y$46$re), $MachinePrecision], If[LessEqual[y$46$re, 1.1e-23], N[(N[(x$46$im / y$46$im), $MachinePrecision] + N[(x$46$re / N[(y$46$im * N[(y$46$im / y$46$re), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Or[LessEqual[y$46$re, 1.25e+24], N[Not[LessEqual[y$46$re, 2.35e+53]], $MachinePrecision]], N[(x$46$re / y$46$re), $MachinePrecision], N[(x$46$im / y$46$im), $MachinePrecision]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y.re \leq -4.4 \cdot 10^{+80}:\\
\;\;\;\;\frac{x.re}{y.re}\\

\mathbf{elif}\;y.re \leq 1.1 \cdot 10^{-23}:\\
\;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\

\mathbf{elif}\;y.re \leq 1.25 \cdot 10^{+24} \lor \neg \left(y.re \leq 2.35 \cdot 10^{+53}\right):\\
\;\;\;\;\frac{x.re}{y.re}\\

\mathbf{else}:\\
\;\;\;\;\frac{x.im}{y.im}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y.re < -4.40000000000000005e80 or 1.1e-23 < y.re < 1.25000000000000011e24 or 2.34999999999999988e53 < y.re

    1. Initial program 51.8%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 72.6%

      \[\leadsto \color{blue}{\frac{x.re}{y.re}} \]

    if -4.40000000000000005e80 < y.re < 1.1e-23

    1. Initial program 73.5%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 76.8%

      \[\leadsto \color{blue}{\frac{x.re \cdot y.re}{{y.im}^{2}} + \frac{x.im}{y.im}} \]
    3. Step-by-step derivation
      1. +-commutative76.8%

        \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re \cdot y.re}{{y.im}^{2}}} \]
      2. unpow276.8%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re \cdot y.re}{\color{blue}{y.im \cdot y.im}} \]
      3. associate-/l*77.7%

        \[\leadsto \frac{x.im}{y.im} + \color{blue}{\frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    4. Simplified77.7%

      \[\leadsto \color{blue}{\frac{x.im}{y.im} + \frac{x.re}{\frac{y.im \cdot y.im}{y.re}}} \]
    5. Taylor expanded in y.im around 0 77.7%

      \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{\frac{{y.im}^{2}}{y.re}}} \]
    6. Step-by-step derivation
      1. unpow277.7%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\frac{\color{blue}{y.im \cdot y.im}}{y.re}} \]
      2. associate-*r/81.1%

        \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{y.im \cdot \frac{y.im}{y.re}}} \]
    7. Simplified81.1%

      \[\leadsto \frac{x.im}{y.im} + \frac{x.re}{\color{blue}{y.im \cdot \frac{y.im}{y.re}}} \]

    if 1.25000000000000011e24 < y.re < 2.34999999999999988e53

    1. Initial program 77.6%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 78.7%

      \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification77.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -4.4 \cdot 10^{+80}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 1.1 \cdot 10^{-23}:\\ \;\;\;\;\frac{x.im}{y.im} + \frac{x.re}{y.im \cdot \frac{y.im}{y.re}}\\ \mathbf{elif}\;y.re \leq 1.25 \cdot 10^{+24} \lor \neg \left(y.re \leq 2.35 \cdot 10^{+53}\right):\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \end{array} \]

Alternative 8: 63.0% accurate, 1.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y.re \leq -3.3 \cdot 10^{+80}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 2.6 \cdot 10^{-24} \lor \neg \left(y.re \leq 1.5 \cdot 10^{+24}\right) \land y.re \leq 3.3 \cdot 10^{+53}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \end{array} \end{array} \]
(FPCore (x.re x.im y.re y.im)
 :precision binary64
 (if (<= y.re -3.3e+80)
   (/ x.re y.re)
   (if (or (<= y.re 2.6e-24) (and (not (<= y.re 1.5e+24)) (<= y.re 3.3e+53)))
     (/ x.im y.im)
     (/ x.re y.re))))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if (y_46_re <= -3.3e+80) {
		tmp = x_46_re / y_46_re;
	} else if ((y_46_re <= 2.6e-24) || (!(y_46_re <= 1.5e+24) && (y_46_re <= 3.3e+53))) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = x_46_re / y_46_re;
	}
	return tmp;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    real(8) :: tmp
    if (y_46re <= (-3.3d+80)) then
        tmp = x_46re / y_46re
    else if ((y_46re <= 2.6d-24) .or. (.not. (y_46re <= 1.5d+24)) .and. (y_46re <= 3.3d+53)) then
        tmp = x_46im / y_46im
    else
        tmp = x_46re / y_46re
    end if
    code = tmp
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	double tmp;
	if (y_46_re <= -3.3e+80) {
		tmp = x_46_re / y_46_re;
	} else if ((y_46_re <= 2.6e-24) || (!(y_46_re <= 1.5e+24) && (y_46_re <= 3.3e+53))) {
		tmp = x_46_im / y_46_im;
	} else {
		tmp = x_46_re / y_46_re;
	}
	return tmp;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	tmp = 0
	if y_46_re <= -3.3e+80:
		tmp = x_46_re / y_46_re
	elif (y_46_re <= 2.6e-24) or (not (y_46_re <= 1.5e+24) and (y_46_re <= 3.3e+53)):
		tmp = x_46_im / y_46_im
	else:
		tmp = x_46_re / y_46_re
	return tmp
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0
	if (y_46_re <= -3.3e+80)
		tmp = Float64(x_46_re / y_46_re);
	elseif ((y_46_re <= 2.6e-24) || (!(y_46_re <= 1.5e+24) && (y_46_re <= 3.3e+53)))
		tmp = Float64(x_46_im / y_46_im);
	else
		tmp = Float64(x_46_re / y_46_re);
	end
	return tmp
end
function tmp_2 = code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = 0.0;
	if (y_46_re <= -3.3e+80)
		tmp = x_46_re / y_46_re;
	elseif ((y_46_re <= 2.6e-24) || (~((y_46_re <= 1.5e+24)) && (y_46_re <= 3.3e+53)))
		tmp = x_46_im / y_46_im;
	else
		tmp = x_46_re / y_46_re;
	end
	tmp_2 = tmp;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := If[LessEqual[y$46$re, -3.3e+80], N[(x$46$re / y$46$re), $MachinePrecision], If[Or[LessEqual[y$46$re, 2.6e-24], And[N[Not[LessEqual[y$46$re, 1.5e+24]], $MachinePrecision], LessEqual[y$46$re, 3.3e+53]]], N[(x$46$im / y$46$im), $MachinePrecision], N[(x$46$re / y$46$re), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y.re \leq -3.3 \cdot 10^{+80}:\\
\;\;\;\;\frac{x.re}{y.re}\\

\mathbf{elif}\;y.re \leq 2.6 \cdot 10^{-24} \lor \neg \left(y.re \leq 1.5 \cdot 10^{+24}\right) \land y.re \leq 3.3 \cdot 10^{+53}:\\
\;\;\;\;\frac{x.im}{y.im}\\

\mathbf{else}:\\
\;\;\;\;\frac{x.re}{y.re}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y.re < -3.29999999999999991e80 or 2.6e-24 < y.re < 1.49999999999999997e24 or 3.3000000000000002e53 < y.re

    1. Initial program 51.8%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around inf 72.6%

      \[\leadsto \color{blue}{\frac{x.re}{y.re}} \]

    if -3.29999999999999991e80 < y.re < 2.6e-24 or 1.49999999999999997e24 < y.re < 3.3000000000000002e53

    1. Initial program 73.7%

      \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
    2. Taylor expanded in y.re around 0 69.0%

      \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification70.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y.re \leq -3.3 \cdot 10^{+80}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \mathbf{elif}\;y.re \leq 2.6 \cdot 10^{-24} \lor \neg \left(y.re \leq 1.5 \cdot 10^{+24}\right) \land y.re \leq 3.3 \cdot 10^{+53}:\\ \;\;\;\;\frac{x.im}{y.im}\\ \mathbf{else}:\\ \;\;\;\;\frac{x.re}{y.re}\\ \end{array} \]

Alternative 9: 43.2% accurate, 5.0× speedup?

\[\begin{array}{l} \\ \frac{x.im}{y.im} \end{array} \]
(FPCore (x.re x.im y.re y.im) :precision binary64 (/ x.im y.im))
double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	return x_46_im / y_46_im;
}
real(8) function code(x_46re, x_46im, y_46re, y_46im)
    real(8), intent (in) :: x_46re
    real(8), intent (in) :: x_46im
    real(8), intent (in) :: y_46re
    real(8), intent (in) :: y_46im
    code = x_46im / y_46im
end function
public static double code(double x_46_re, double x_46_im, double y_46_re, double y_46_im) {
	return x_46_im / y_46_im;
}
def code(x_46_re, x_46_im, y_46_re, y_46_im):
	return x_46_im / y_46_im
function code(x_46_re, x_46_im, y_46_re, y_46_im)
	return Float64(x_46_im / y_46_im)
end
function tmp = code(x_46_re, x_46_im, y_46_re, y_46_im)
	tmp = x_46_im / y_46_im;
end
code[x$46$re_, x$46$im_, y$46$re_, y$46$im_] := N[(x$46$im / y$46$im), $MachinePrecision]
\begin{array}{l}

\\
\frac{x.im}{y.im}
\end{array}
Derivation
  1. Initial program 64.5%

    \[\frac{x.re \cdot y.re + x.im \cdot y.im}{y.re \cdot y.re + y.im \cdot y.im} \]
  2. Taylor expanded in y.re around 0 47.2%

    \[\leadsto \color{blue}{\frac{x.im}{y.im}} \]
  3. Final simplification47.2%

    \[\leadsto \frac{x.im}{y.im} \]

Reproduce

?
herbie shell --seed 2023274 
(FPCore (x.re x.im y.re y.im)
  :name "_divideComplex, real part"
  :precision binary64
  (/ (+ (* x.re y.re) (* x.im y.im)) (+ (* y.re y.re) (* y.im y.im))))