
(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 6 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) (/ 1.0 (cbrt (* g 0.5))))))
double code(double g, double a) {
return 1.0 / (cbrt(a) * (1.0 / cbrt((g * 0.5))));
}
public static double code(double g, double a) {
return 1.0 / (Math.cbrt(a) * (1.0 / Math.cbrt((g * 0.5))));
}
function code(g, a) return Float64(1.0 / Float64(cbrt(a) * Float64(1.0 / cbrt(Float64(g * 0.5))))) end
code[g_, a_] := N[(1.0 / N[(N[Power[a, 1/3], $MachinePrecision] * N[(1.0 / N[Power[N[(g * 0.5), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{\sqrt[3]{a} \cdot \frac{1}{\sqrt[3]{g \cdot 0.5}}}
\end{array}
Initial program 79.4%
cbrt-div98.3%
clear-num98.3%
Applied egg-rr98.3%
*-commutative98.3%
Simplified98.3%
/-rgt-identity98.3%
clear-num98.3%
associate-/r/98.3%
metadata-eval98.3%
metadata-eval98.3%
div-inv98.3%
cbrt-div98.2%
clear-num98.6%
cbrt-prod79.6%
associate-*l/79.7%
*-commutative79.7%
cbrt-undiv98.7%
clear-num98.7%
div-inv98.7%
Applied egg-rr98.7%
(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 79.4%
associate-/r*79.8%
cbrt-div98.7%
div-inv98.7%
metadata-eval98.7%
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 79.4%
pow1/337.4%
clear-num37.1%
associate-/r/37.4%
unpow-prod-down24.6%
pow1/346.3%
associate-/r*46.3%
metadata-eval46.3%
pow1/398.6%
Applied egg-rr98.6%
(FPCore (g a) :precision binary64 (/ 1.0 (cbrt (* a (/ 2.0 g)))))
double code(double g, double a) {
return 1.0 / cbrt((a * (2.0 / g)));
}
public static double code(double g, double a) {
return 1.0 / Math.cbrt((a * (2.0 / g)));
}
function code(g, a) return Float64(1.0 / cbrt(Float64(a * Float64(2.0 / g)))) end
code[g_, a_] := N[(1.0 / N[Power[N[(a * N[(2.0 / g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{\sqrt[3]{a \cdot \frac{2}{g}}}
\end{array}
Initial program 79.4%
clear-num78.8%
cbrt-div79.8%
metadata-eval79.8%
associate-/l*80.2%
Applied egg-rr80.2%
associate-*r/79.8%
*-commutative79.8%
associate-/l*80.2%
Simplified80.2%
(FPCore (g a) :precision binary64 (/ 1.0 (cbrt (* 2.0 (/ a g)))))
double code(double g, double a) {
return 1.0 / cbrt((2.0 * (a / g)));
}
public static double code(double g, double a) {
return 1.0 / Math.cbrt((2.0 * (a / g)));
}
function code(g, a) return Float64(1.0 / cbrt(Float64(2.0 * Float64(a / g)))) end
code[g_, a_] := N[(1.0 / N[Power[N[(2.0 * N[(a / g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{\sqrt[3]{2 \cdot \frac{a}{g}}}
\end{array}
Initial program 79.4%
clear-num78.8%
cbrt-div79.8%
metadata-eval79.8%
associate-/l*80.2%
Applied egg-rr80.2%
(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 79.4%
clear-num78.8%
associate-/r/79.4%
associate-/r*79.7%
metadata-eval79.7%
Applied egg-rr79.7%
Final simplification79.7%
herbie shell --seed 2024155
(FPCore (g a)
:name "2-ancestry mixing, zero discriminant"
:precision binary64
(cbrt (/ g (* 2.0 a))))