
(FPCore (g a) :precision binary64 (cbrt (/ g (* 2.0 a))))
double code(double g, double a) {
return cbrt((g / (2.0 * a)));
}
public static double code(double g, double a) {
return Math.cbrt((g / (2.0 * a)));
}
function code(g, a) return cbrt(Float64(g / Float64(2.0 * a))) end
code[g_, a_] := N[Power[N[(g / N[(2.0 * a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{g}{2 \cdot a}}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 9 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (g a) :precision binary64 (cbrt (/ g (* 2.0 a))))
double code(double g, double a) {
return cbrt((g / (2.0 * a)));
}
public static double code(double g, double a) {
return Math.cbrt((g / (2.0 * a)));
}
function code(g, a) return cbrt(Float64(g / Float64(2.0 * a))) end
code[g_, a_] := N[Power[N[(g / N[(2.0 * a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{g}{2 \cdot a}}
\end{array}
(FPCore (g a) :precision binary64 (* (cbrt (/ -1.0 a)) (/ 1.0 (cbrt (/ -2.0 g)))))
double code(double g, double a) {
return cbrt((-1.0 / a)) * (1.0 / cbrt((-2.0 / g)));
}
public static double code(double g, double a) {
return Math.cbrt((-1.0 / a)) * (1.0 / Math.cbrt((-2.0 / g)));
}
function code(g, a) return Float64(cbrt(Float64(-1.0 / a)) * Float64(1.0 / cbrt(Float64(-2.0 / g)))) end
code[g_, a_] := N[(N[Power[N[(-1.0 / a), $MachinePrecision], 1/3], $MachinePrecision] * N[(1.0 / N[Power[N[(-2.0 / g), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{-1}{a}} \cdot \frac{1}{\sqrt[3]{\frac{-2}{g}}}
\end{array}
Initial program 78.1%
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f6498.7
Applied egg-rr98.7%
clear-numN/A
associate-/r/N/A
metadata-evalN/A
cbrt-divN/A
metadata-evalN/A
div-invN/A
clear-numN/A
cbrt-prodN/A
div-invN/A
frac-2negN/A
cbrt-divN/A
pow1/3N/A
div-invN/A
*-lowering-*.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
metadata-evalN/A
/-lowering-/.f64N/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
/-lowering-/.f64N/A
metadata-eval98.8
Applied egg-rr98.8%
(FPCore (g a) :precision binary64 (/ (cbrt (/ 1.0 (/ 2.0 g))) (cbrt a)))
double code(double g, double a) {
return cbrt((1.0 / (2.0 / g))) / cbrt(a);
}
public static double code(double g, double a) {
return Math.cbrt((1.0 / (2.0 / g))) / Math.cbrt(a);
}
function code(g, a) return Float64(cbrt(Float64(1.0 / Float64(2.0 / g))) / cbrt(a)) end
code[g_, a_] := N[(N[Power[N[(1.0 / N[(2.0 / g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{\frac{1}{\frac{2}{g}}}}{\sqrt[3]{a}}
\end{array}
Initial program 78.1%
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f6498.7
Applied egg-rr98.7%
metadata-evalN/A
div-invN/A
clear-numN/A
/-lowering-/.f64N/A
/-lowering-/.f6498.8
Applied egg-rr98.8%
(FPCore (g a) :precision binary64 (/ (cbrt (/ -1.0 a)) (cbrt (/ -2.0 g))))
double code(double g, double a) {
return cbrt((-1.0 / a)) / cbrt((-2.0 / g));
}
public static double code(double g, double a) {
return Math.cbrt((-1.0 / a)) / Math.cbrt((-2.0 / g));
}
function code(g, a) return Float64(cbrt(Float64(-1.0 / a)) / cbrt(Float64(-2.0 / g))) end
code[g_, a_] := N[(N[Power[N[(-1.0 / a), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[N[(-2.0 / g), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{\frac{-1}{a}}}{\sqrt[3]{\frac{-2}{g}}}
\end{array}
Initial program 78.1%
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f6498.7
Applied egg-rr98.7%
clear-numN/A
associate-/r/N/A
metadata-evalN/A
cbrt-divN/A
metadata-evalN/A
div-invN/A
clear-numN/A
cbrt-prodN/A
div-invN/A
frac-2negN/A
cbrt-divN/A
pow1/3N/A
/-lowering-/.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
metadata-evalN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
/-lowering-/.f64N/A
metadata-eval98.8
Applied egg-rr98.8%
(FPCore (g a) :precision binary64 (if (<= (* a 2.0) 5e-294) (cbrt (* 0.5 (/ g a))) (* (cbrt (* g 0.5)) (pow a -0.3333333333333333))))
double code(double g, double a) {
double tmp;
if ((a * 2.0) <= 5e-294) {
tmp = cbrt((0.5 * (g / a)));
} else {
tmp = cbrt((g * 0.5)) * pow(a, -0.3333333333333333);
}
return tmp;
}
public static double code(double g, double a) {
double tmp;
if ((a * 2.0) <= 5e-294) {
tmp = Math.cbrt((0.5 * (g / a)));
} else {
tmp = Math.cbrt((g * 0.5)) * Math.pow(a, -0.3333333333333333);
}
return tmp;
}
function code(g, a) tmp = 0.0 if (Float64(a * 2.0) <= 5e-294) tmp = cbrt(Float64(0.5 * Float64(g / a))); else tmp = Float64(cbrt(Float64(g * 0.5)) * (a ^ -0.3333333333333333)); end return tmp end
code[g_, a_] := If[LessEqual[N[(a * 2.0), $MachinePrecision], 5e-294], N[Power[N[(0.5 * N[(g / a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision], N[(N[Power[N[(g * 0.5), $MachinePrecision], 1/3], $MachinePrecision] * N[Power[a, -0.3333333333333333], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \cdot 2 \leq 5 \cdot 10^{-294}:\\
\;\;\;\;\sqrt[3]{0.5 \cdot \frac{g}{a}}\\
\mathbf{else}:\\
\;\;\;\;\sqrt[3]{g \cdot 0.5} \cdot {a}^{-0.3333333333333333}\\
\end{array}
\end{array}
if (*.f64 #s(literal 2 binary64) a) < 5.0000000000000003e-294Initial program 78.2%
associate-/l/N/A
div-invN/A
*-lowering-*.f64N/A
/-lowering-/.f64N/A
metadata-eval78.2
Applied egg-rr78.2%
if 5.0000000000000003e-294 < (*.f64 #s(literal 2 binary64) a) Initial program 78.1%
associate-/r*N/A
div-invN/A
cbrt-prodN/A
pow1/3N/A
*-commutativeN/A
*-lowering-*.f64N/A
inv-powN/A
pow-powN/A
pow-lowering-pow.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-eval92.4
Applied egg-rr92.4%
Final simplification85.1%
(FPCore (g a) :precision binary64 (/ (cbrt (* g 0.5)) (cbrt a)))
double code(double g, double a) {
return cbrt((g * 0.5)) / cbrt(a);
}
public static double code(double g, double a) {
return Math.cbrt((g * 0.5)) / Math.cbrt(a);
}
function code(g, a) return Float64(cbrt(Float64(g * 0.5)) / cbrt(a)) end
code[g_, a_] := N[(N[Power[N[(g * 0.5), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{g \cdot 0.5}}{\sqrt[3]{a}}
\end{array}
Initial program 78.1%
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f6498.7
Applied egg-rr98.7%
(FPCore (g a) :precision binary64 (* (cbrt (/ 0.5 a)) (cbrt g)))
double code(double g, double a) {
return cbrt((0.5 / a)) * cbrt(g);
}
public static double code(double g, double a) {
return Math.cbrt((0.5 / a)) * Math.cbrt(g);
}
function code(g, a) return Float64(cbrt(Float64(0.5 / a)) * cbrt(g)) end
code[g_, a_] := N[(N[Power[N[(0.5 / a), $MachinePrecision], 1/3], $MachinePrecision] * N[Power[g, 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{0.5}{a}} \cdot \sqrt[3]{g}
\end{array}
Initial program 78.1%
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f6498.7
Applied egg-rr98.7%
clear-numN/A
associate-/r/N/A
metadata-evalN/A
cbrt-divN/A
metadata-evalN/A
div-invN/A
clear-numN/A
cbrt-prodN/A
div-invN/A
frac-2negN/A
cbrt-divN/A
pow1/3N/A
div-invN/A
*-lowering-*.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
metadata-evalN/A
/-lowering-/.f64N/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
/-lowering-/.f64N/A
metadata-eval98.8
Applied egg-rr98.8%
un-div-invN/A
cbrt-undivN/A
clear-numN/A
associate-/r/N/A
associate-/l*N/A
inv-powN/A
metadata-evalN/A
pow-divN/A
pow2N/A
cube-unmultN/A
metadata-evalN/A
distribute-neg-fracN/A
clear-numN/A
distribute-neg-frac2N/A
metadata-evalN/A
times-fracN/A
associate-*r/N/A
clear-numN/A
un-div-invN/A
associate-/r/N/A
Applied egg-rr98.7%
(FPCore (g a) :precision binary64 (/ 1.0 (cbrt (/ a (* g 0.5)))))
double code(double g, double a) {
return 1.0 / cbrt((a / (g * 0.5)));
}
public static double code(double g, double a) {
return 1.0 / Math.cbrt((a / (g * 0.5)));
}
function code(g, a) return Float64(1.0 / cbrt(Float64(a / Float64(g * 0.5)))) end
code[g_, a_] := N[(1.0 / N[Power[N[(a / N[(g * 0.5), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{\sqrt[3]{\frac{a}{g \cdot 0.5}}}
\end{array}
Initial program 78.1%
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
div-invN/A
*-lowering-*.f64N/A
metadata-evalN/A
cbrt-lowering-cbrt.f6498.7
Applied egg-rr98.7%
clear-numN/A
associate-/r/N/A
metadata-evalN/A
cbrt-divN/A
metadata-evalN/A
div-invN/A
clear-numN/A
cbrt-prodN/A
div-invN/A
frac-2negN/A
cbrt-divN/A
pow1/3N/A
div-invN/A
*-lowering-*.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
metadata-evalN/A
/-lowering-/.f64N/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
distribute-neg-fracN/A
/-lowering-/.f64N/A
metadata-eval98.8
Applied egg-rr98.8%
Applied egg-rr78.8%
(FPCore (g a) :precision binary64 (cbrt (* 0.5 (/ g a))))
double code(double g, double a) {
return cbrt((0.5 * (g / a)));
}
public static double code(double g, double a) {
return Math.cbrt((0.5 * (g / a)));
}
function code(g, a) return cbrt(Float64(0.5 * Float64(g / a))) end
code[g_, a_] := N[Power[N[(0.5 * N[(g / a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{0.5 \cdot \frac{g}{a}}
\end{array}
Initial program 78.1%
associate-/l/N/A
div-invN/A
*-lowering-*.f64N/A
/-lowering-/.f64N/A
metadata-eval78.5
Applied egg-rr78.5%
Final simplification78.5%
(FPCore (g a) :precision binary64 (cbrt (* g (/ 0.5 a))))
double code(double g, double a) {
return cbrt((g * (0.5 / a)));
}
public static double code(double g, double a) {
return Math.cbrt((g * (0.5 / a)));
}
function code(g, a) return cbrt(Float64(g * Float64(0.5 / a))) end
code[g_, a_] := N[Power[N[(g * N[(0.5 / a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{g \cdot \frac{0.5}{a}}
\end{array}
Initial program 78.1%
clear-numN/A
associate-/r/N/A
*-lowering-*.f64N/A
associate-/r*N/A
/-lowering-/.f64N/A
metadata-eval78.5
Applied egg-rr78.5%
Final simplification78.5%
herbie shell --seed 2024198
(FPCore (g a)
:name "2-ancestry mixing, zero discriminant"
:precision binary64
(cbrt (/ g (* 2.0 a))))