
(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)) (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 74.1%
pow1/332.6%
associate-/r*32.6%
div-inv32.6%
unpow-prod-down22.9%
pow1/351.3%
div-inv51.3%
metadata-eval51.3%
Applied egg-rr51.3%
unpow1/398.7%
Simplified98.7%
cbrt-div98.6%
metadata-eval98.6%
div-inv98.6%
clear-num98.6%
div-inv98.6%
metadata-eval98.6%
metadata-eval98.6%
div-inv98.6%
cbrt-div98.6%
clear-num98.6%
associate-/r*98.7%
Applied egg-rr98.7%
Taylor expanded in a around 0 98.7%
(FPCore (g a) :precision binary64 (* (cbrt (/ 1.0 a)) (cbrt (* g 0.5))))
double code(double g, double a) {
return cbrt((1.0 / a)) * cbrt((g * 0.5));
}
public static double code(double g, double a) {
return Math.cbrt((1.0 / a)) * Math.cbrt((g * 0.5));
}
function code(g, a) return Float64(cbrt(Float64(1.0 / a)) * cbrt(Float64(g * 0.5))) end
code[g_, a_] := N[(N[Power[N[(1.0 / a), $MachinePrecision], 1/3], $MachinePrecision] * N[Power[N[(g * 0.5), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{1}{a}} \cdot \sqrt[3]{g \cdot 0.5}
\end{array}
Initial program 74.1%
pow1/332.6%
associate-/r*32.6%
div-inv32.6%
unpow-prod-down22.9%
pow1/351.3%
div-inv51.3%
metadata-eval51.3%
Applied egg-rr51.3%
unpow1/398.7%
Simplified98.7%
Final simplification98.7%
(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 74.1%
associate-/r*74.1%
cbrt-div98.6%
div-inv98.6%
metadata-eval98.6%
Applied egg-rr98.6%
(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 74.1%
pow1/332.6%
clear-num32.6%
associate-/r/32.6%
unpow-prod-down22.9%
pow1/342.7%
associate-/r*42.7%
metadata-eval42.7%
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(Float64(a * 2.0) / g))) end
code[g_, a_] := N[(1.0 / N[Power[N[(N[(a * 2.0), $MachinePrecision] / g), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{\sqrt[3]{\frac{a \cdot 2}{g}}}
\end{array}
Initial program 74.1%
clear-num74.0%
cbrt-div75.1%
metadata-eval75.1%
associate-/l*75.1%
Applied egg-rr75.1%
associate-*r/75.1%
*-commutative75.1%
associate-/l*75.1%
Simplified75.1%
associate-*r/75.1%
Applied egg-rr75.1%
(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 74.1%
clear-num74.0%
cbrt-div75.1%
metadata-eval75.1%
associate-/l*75.1%
Applied egg-rr75.1%
associate-*r/75.1%
*-commutative75.1%
associate-/l*75.1%
Simplified75.1%
(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 74.1%
clear-num74.0%
cbrt-div75.1%
metadata-eval75.1%
associate-/l*75.1%
Applied egg-rr75.1%
(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 74.1%
Final simplification74.1%
(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 74.1%
add-log-exp9.9%
*-un-lft-identity9.9%
log-prod9.9%
metadata-eval9.9%
add-log-exp74.1%
div-inv74.0%
associate-/r*74.0%
metadata-eval74.0%
Applied egg-rr74.0%
+-lft-identity74.0%
Simplified74.0%
herbie shell --seed 2024109
(FPCore (g a)
:name "2-ancestry mixing, zero discriminant"
:precision binary64
(cbrt (/ g (* 2.0 a))))