
(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 5 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 (/ 1.0 (/ (cbrt a) (cbrt (/ g 2.0)))))
double code(double g, double a) {
return 1.0 / (cbrt(a) / cbrt((g / 2.0)));
}
public static double code(double g, double a) {
return 1.0 / (Math.cbrt(a) / Math.cbrt((g / 2.0)));
}
function code(g, a) return Float64(1.0 / Float64(cbrt(a) / cbrt(Float64(g / 2.0)))) end
code[g_, a_] := N[(1.0 / N[(N[Power[a, 1/3], $MachinePrecision] / N[Power[N[(g / 2.0), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{\frac{\sqrt[3]{a}}{\sqrt[3]{\frac{g}{2}}}}
\end{array}
Initial program 77.1%
cbrt-lowering-cbrt.f64N/A
associate-/l/N/A
/-lowering-/.f64N/A
/-lowering-/.f6477.1%
Simplified77.1%
associate-/l/N/A
associate-/r*N/A
cbrt-divN/A
clear-numN/A
/-lowering-/.f64N/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
cbrt-lowering-cbrt.f64N/A
/-lowering-/.f6498.9%
Applied egg-rr98.9%
(FPCore (g a) :precision binary64 (/ (cbrt (/ g 2.0)) (cbrt a)))
double code(double g, double a) {
return cbrt((g / 2.0)) / cbrt(a);
}
public static double code(double g, double a) {
return Math.cbrt((g / 2.0)) / Math.cbrt(a);
}
function code(g, a) return Float64(cbrt(Float64(g / 2.0)) / cbrt(a)) end
code[g_, a_] := N[(N[Power[N[(g / 2.0), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{\frac{g}{2}}}{\sqrt[3]{a}}
\end{array}
Initial program 77.1%
cbrt-lowering-cbrt.f64N/A
associate-/l/N/A
/-lowering-/.f64N/A
/-lowering-/.f6477.1%
Simplified77.1%
associate-/l/N/A
associate-/r*N/A
cbrt-divN/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f64N/A
/-lowering-/.f64N/A
cbrt-lowering-cbrt.f6498.8%
Applied egg-rr98.8%
(FPCore (g a) :precision binary64 (* (cbrt g) (cbrt (/ 0.5 a))))
double code(double g, double a) {
return cbrt(g) * cbrt((0.5 / a));
}
public static double code(double g, double a) {
return Math.cbrt(g) * Math.cbrt((0.5 / a));
}
function code(g, a) return Float64(cbrt(g) * cbrt(Float64(0.5 / a))) end
code[g_, a_] := N[(N[Power[g, 1/3], $MachinePrecision] * N[Power[N[(0.5 / a), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{g} \cdot \sqrt[3]{\frac{0.5}{a}}
\end{array}
Initial program 77.1%
cbrt-lowering-cbrt.f64N/A
associate-/l/N/A
/-lowering-/.f64N/A
/-lowering-/.f6477.1%
Simplified77.1%
pow1/3N/A
frac-2negN/A
div-invN/A
unpow-prod-downN/A
distribute-neg-frac2N/A
div-invN/A
unpow-prod-downN/A
associate-*l*N/A
*-lowering-*.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
*-lowering-*.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
metadata-evalN/A
frac-2negN/A
/-lowering-/.f64N/A
pow1/3N/A
cbrt-lowering-cbrt.f64N/A
metadata-evalN/A
metadata-eval98.3%
Applied egg-rr98.3%
*-commutativeN/A
cbrt-unprodN/A
associate-*r/N/A
metadata-evalN/A
cbrt-lowering-cbrt.f64N/A
/-lowering-/.f6498.3%
Applied egg-rr98.3%
(FPCore (g a) :precision binary64 (cbrt (/ g (* a 2.0))))
double code(double g, double a) {
return cbrt((g / (a * 2.0)));
}
public static double code(double g, double a) {
return Math.cbrt((g / (a * 2.0)));
}
function code(g, a) return cbrt(Float64(g / Float64(a * 2.0))) end
code[g_, a_] := N[Power[N[(g / N[(a * 2.0), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{g}{a \cdot 2}}
\end{array}
Initial program 77.1%
Final simplification77.1%
(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 77.1%
cbrt-lowering-cbrt.f64N/A
associate-/l/N/A
/-lowering-/.f64N/A
/-lowering-/.f6477.1%
Simplified77.1%
div-invN/A
associate-/l*N/A
*-commutativeN/A
*-lowering-*.f64N/A
associate-/l/N/A
associate-/r*N/A
/-lowering-/.f64N/A
metadata-eval76.7%
Applied egg-rr76.7%
Final simplification76.7%
herbie shell --seed 2024144
(FPCore (g a)
:name "2-ancestry mixing, zero discriminant"
:precision binary64
(cbrt (/ g (* 2.0 a))))