
(FPCore (g h a) :precision binary64 (let* ((t_0 (/ 1.0 (* 2.0 a))) (t_1 (sqrt (- (* g g) (* h h))))) (+ (cbrt (* t_0 (+ (- g) t_1))) (cbrt (* t_0 (- (- g) t_1))))))
double code(double g, double h, double a) {
double t_0 = 1.0 / (2.0 * a);
double t_1 = sqrt(((g * g) - (h * h)));
return cbrt((t_0 * (-g + t_1))) + cbrt((t_0 * (-g - t_1)));
}
public static double code(double g, double h, double a) {
double t_0 = 1.0 / (2.0 * a);
double t_1 = Math.sqrt(((g * g) - (h * h)));
return Math.cbrt((t_0 * (-g + t_1))) + Math.cbrt((t_0 * (-g - t_1)));
}
function code(g, h, a) t_0 = Float64(1.0 / Float64(2.0 * a)) t_1 = sqrt(Float64(Float64(g * g) - Float64(h * h))) return Float64(cbrt(Float64(t_0 * Float64(Float64(-g) + t_1))) + cbrt(Float64(t_0 * Float64(Float64(-g) - t_1)))) end
code[g_, h_, a_] := Block[{t$95$0 = N[(1.0 / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[Sqrt[N[(N[(g * g), $MachinePrecision] - N[(h * h), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]}, N[(N[Power[N[(t$95$0 * N[((-g) + t$95$1), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] + N[Power[N[(t$95$0 * N[((-g) - t$95$1), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{1}{2 \cdot a}\\
t_1 := \sqrt{g \cdot g - h \cdot h}\\
\sqrt[3]{t_0 \cdot \left(\left(-g\right) + t_1\right)} + \sqrt[3]{t_0 \cdot \left(\left(-g\right) - t_1\right)}
\end{array}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (g h a) :precision binary64 (let* ((t_0 (/ 1.0 (* 2.0 a))) (t_1 (sqrt (- (* g g) (* h h))))) (+ (cbrt (* t_0 (+ (- g) t_1))) (cbrt (* t_0 (- (- g) t_1))))))
double code(double g, double h, double a) {
double t_0 = 1.0 / (2.0 * a);
double t_1 = sqrt(((g * g) - (h * h)));
return cbrt((t_0 * (-g + t_1))) + cbrt((t_0 * (-g - t_1)));
}
public static double code(double g, double h, double a) {
double t_0 = 1.0 / (2.0 * a);
double t_1 = Math.sqrt(((g * g) - (h * h)));
return Math.cbrt((t_0 * (-g + t_1))) + Math.cbrt((t_0 * (-g - t_1)));
}
function code(g, h, a) t_0 = Float64(1.0 / Float64(2.0 * a)) t_1 = sqrt(Float64(Float64(g * g) - Float64(h * h))) return Float64(cbrt(Float64(t_0 * Float64(Float64(-g) + t_1))) + cbrt(Float64(t_0 * Float64(Float64(-g) - t_1)))) end
code[g_, h_, a_] := Block[{t$95$0 = N[(1.0 / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[Sqrt[N[(N[(g * g), $MachinePrecision] - N[(h * h), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]}, N[(N[Power[N[(t$95$0 * N[((-g) + t$95$1), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] + N[Power[N[(t$95$0 * N[((-g) - t$95$1), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{1}{2 \cdot a}\\
t_1 := \sqrt{g \cdot g - h \cdot h}\\
\sqrt[3]{t_0 \cdot \left(\left(-g\right) + t_1\right)} + \sqrt[3]{t_0 \cdot \left(\left(-g\right) - t_1\right)}
\end{array}
\end{array}
(FPCore (g h a) :precision binary64 (+ (/ (cbrt (* 0.5 (- (hypot g h) g))) (cbrt a)) (/ (cbrt (pow (sqrt (+ g (hypot g h))) 2.0)) (cbrt (* a -2.0)))))
double code(double g, double h, double a) {
return (cbrt((0.5 * (hypot(g, h) - g))) / cbrt(a)) + (cbrt(pow(sqrt((g + hypot(g, h))), 2.0)) / cbrt((a * -2.0)));
}
public static double code(double g, double h, double a) {
return (Math.cbrt((0.5 * (Math.hypot(g, h) - g))) / Math.cbrt(a)) + (Math.cbrt(Math.pow(Math.sqrt((g + Math.hypot(g, h))), 2.0)) / Math.cbrt((a * -2.0)));
}
function code(g, h, a) return Float64(Float64(cbrt(Float64(0.5 * Float64(hypot(g, h) - g))) / cbrt(a)) + Float64(cbrt((sqrt(Float64(g + hypot(g, h))) ^ 2.0)) / cbrt(Float64(a * -2.0)))) end
code[g_, h_, a_] := N[(N[(N[Power[N[(0.5 * N[(N[Sqrt[g ^ 2 + h ^ 2], $MachinePrecision] - g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision] + N[(N[Power[N[Power[N[Sqrt[N[(g + N[Sqrt[g ^ 2 + h ^ 2], $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 2.0], $MachinePrecision], 1/3], $MachinePrecision] / N[Power[N[(a * -2.0), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{0.5 \cdot \left(\mathsf{hypot}\left(g, h\right) - g\right)}}{\sqrt[3]{a}} + \frac{\sqrt[3]{{\left(\sqrt{g + \mathsf{hypot}\left(g, h\right)}\right)}^{2}}}{\sqrt[3]{a \cdot -2}}
\end{array}
Initial program 49.4%
associate-/r*49.4%
metadata-eval49.4%
+-commutative49.4%
unsub-neg49.4%
fma-neg49.4%
sub-neg49.4%
distribute-neg-out49.4%
neg-mul-149.4%
associate-*r*49.4%
Simplified49.4%
associate-*l/49.4%
cbrt-div52.8%
Applied egg-rr53.7%
cbrt-div54.4%
fma-udef54.4%
add-sqr-sqrt30.3%
hypot-def44.6%
add-sqr-sqrt44.6%
sqrt-unprod83.2%
sqr-neg83.2%
sqrt-unprod89.7%
add-sqr-sqrt89.7%
sqrt-prod44.6%
add-sqr-sqrt94.8%
div-inv94.8%
metadata-eval94.8%
Applied egg-rr94.8%
add-sqr-sqrt94.8%
pow294.8%
Applied egg-rr94.8%
Final simplification94.8%
(FPCore (g h a) :precision binary64 (+ (/ (cbrt (* 0.5 (- (hypot g h) g))) (cbrt a)) (* (cbrt (+ g (hypot g h))) (cbrt (/ -0.5 a)))))
double code(double g, double h, double a) {
return (cbrt((0.5 * (hypot(g, h) - g))) / cbrt(a)) + (cbrt((g + hypot(g, h))) * cbrt((-0.5 / a)));
}
public static double code(double g, double h, double a) {
return (Math.cbrt((0.5 * (Math.hypot(g, h) - g))) / Math.cbrt(a)) + (Math.cbrt((g + Math.hypot(g, h))) * Math.cbrt((-0.5 / a)));
}
function code(g, h, a) return Float64(Float64(cbrt(Float64(0.5 * Float64(hypot(g, h) - g))) / cbrt(a)) + Float64(cbrt(Float64(g + hypot(g, h))) * cbrt(Float64(-0.5 / a)))) end
code[g_, h_, a_] := N[(N[(N[Power[N[(0.5 * N[(N[Sqrt[g ^ 2 + h ^ 2], $MachinePrecision] - g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision] + N[(N[Power[N[(g + N[Sqrt[g ^ 2 + h ^ 2], $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] * N[Power[N[(-0.5 / a), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{0.5 \cdot \left(\mathsf{hypot}\left(g, h\right) - g\right)}}{\sqrt[3]{a}} + \sqrt[3]{g + \mathsf{hypot}\left(g, h\right)} \cdot \sqrt[3]{\frac{-0.5}{a}}
\end{array}
Initial program 49.4%
associate-/r*49.4%
metadata-eval49.4%
+-commutative49.4%
unsub-neg49.4%
fma-neg49.4%
sub-neg49.4%
distribute-neg-out49.4%
neg-mul-149.4%
associate-*r*49.4%
Simplified49.4%
associate-*l/49.4%
cbrt-div52.8%
Applied egg-rr53.7%
div-inv53.6%
clear-num53.6%
cbrt-prod54.4%
Applied egg-rr94.8%
*-commutative94.8%
Simplified94.8%
Final simplification94.8%
(FPCore (g h a) :precision binary64 (+ (/ (cbrt (* 0.5 (- (hypot g h) g))) (cbrt a)) (/ (cbrt (+ g (hypot g h))) (cbrt (* a -2.0)))))
double code(double g, double h, double a) {
return (cbrt((0.5 * (hypot(g, h) - g))) / cbrt(a)) + (cbrt((g + hypot(g, h))) / cbrt((a * -2.0)));
}
public static double code(double g, double h, double a) {
return (Math.cbrt((0.5 * (Math.hypot(g, h) - g))) / Math.cbrt(a)) + (Math.cbrt((g + Math.hypot(g, h))) / Math.cbrt((a * -2.0)));
}
function code(g, h, a) return Float64(Float64(cbrt(Float64(0.5 * Float64(hypot(g, h) - g))) / cbrt(a)) + Float64(cbrt(Float64(g + hypot(g, h))) / cbrt(Float64(a * -2.0)))) end
code[g_, h_, a_] := N[(N[(N[Power[N[(0.5 * N[(N[Sqrt[g ^ 2 + h ^ 2], $MachinePrecision] - g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision] + N[(N[Power[N[(g + N[Sqrt[g ^ 2 + h ^ 2], $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[N[(a * -2.0), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{0.5 \cdot \left(\mathsf{hypot}\left(g, h\right) - g\right)}}{\sqrt[3]{a}} + \frac{\sqrt[3]{g + \mathsf{hypot}\left(g, h\right)}}{\sqrt[3]{a \cdot -2}}
\end{array}
Initial program 49.4%
associate-/r*49.4%
metadata-eval49.4%
+-commutative49.4%
unsub-neg49.4%
fma-neg49.4%
sub-neg49.4%
distribute-neg-out49.4%
neg-mul-149.4%
associate-*r*49.4%
Simplified49.4%
associate-*l/49.4%
cbrt-div52.8%
Applied egg-rr53.7%
cbrt-div54.4%
fma-udef54.4%
add-sqr-sqrt30.3%
hypot-def44.6%
add-sqr-sqrt44.6%
sqrt-unprod83.2%
sqr-neg83.2%
sqrt-unprod89.7%
add-sqr-sqrt89.7%
sqrt-prod44.6%
add-sqr-sqrt94.8%
div-inv94.8%
metadata-eval94.8%
Applied egg-rr94.8%
Final simplification94.8%
(FPCore (g h a) :precision binary64 (+ (cbrt (* (/ -0.5 a) (- g g))) (/ (cbrt g) (cbrt (- a)))))
double code(double g, double h, double a) {
return cbrt(((-0.5 / a) * (g - g))) + (cbrt(g) / cbrt(-a));
}
public static double code(double g, double h, double a) {
return Math.cbrt(((-0.5 / a) * (g - g))) + (Math.cbrt(g) / Math.cbrt(-a));
}
function code(g, h, a) return Float64(cbrt(Float64(Float64(-0.5 / a) * Float64(g - g))) + Float64(cbrt(g) / cbrt(Float64(-a)))) end
code[g_, h_, a_] := N[(N[Power[N[(N[(-0.5 / a), $MachinePrecision] * N[(g - g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] + N[(N[Power[g, 1/3], $MachinePrecision] / N[Power[(-a), 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{-0.5}{a} \cdot \left(g - g\right)} + \frac{\sqrt[3]{g}}{\sqrt[3]{-a}}
\end{array}
Initial program 49.4%
Simplified49.4%
Taylor expanded in g around inf 21.5%
Taylor expanded in g around inf 76.9%
associate-*r/76.9%
neg-mul-176.9%
Simplified76.9%
frac-2neg76.9%
cbrt-div94.7%
add-sqr-sqrt53.0%
sqrt-unprod33.8%
sqr-neg33.8%
sqrt-unprod0.6%
add-sqr-sqrt1.5%
add-sqr-sqrt0.8%
sqrt-unprod21.6%
sqr-neg21.6%
sqrt-unprod41.8%
add-sqr-sqrt94.7%
Applied egg-rr94.7%
Final simplification94.7%
(FPCore (g h a) :precision binary64 (+ (cbrt (* (/ 0.5 a) (* -0.5 (/ h (/ g h))))) (/ 1.0 (cbrt (/ (* a -2.0) (* g 2.0))))))
double code(double g, double h, double a) {
return cbrt(((0.5 / a) * (-0.5 * (h / (g / h))))) + (1.0 / cbrt(((a * -2.0) / (g * 2.0))));
}
public static double code(double g, double h, double a) {
return Math.cbrt(((0.5 / a) * (-0.5 * (h / (g / h))))) + (1.0 / Math.cbrt(((a * -2.0) / (g * 2.0))));
}
function code(g, h, a) return Float64(cbrt(Float64(Float64(0.5 / a) * Float64(-0.5 * Float64(h / Float64(g / h))))) + Float64(1.0 / cbrt(Float64(Float64(a * -2.0) / Float64(g * 2.0))))) end
code[g_, h_, a_] := N[(N[Power[N[(N[(0.5 / a), $MachinePrecision] * N[(-0.5 * N[(h / N[(g / h), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] + N[(1.0 / N[Power[N[(N[(a * -2.0), $MachinePrecision] / N[(g * 2.0), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{0.5}{a} \cdot \left(-0.5 \cdot \frac{h}{\frac{g}{h}}\right)} + \frac{1}{\sqrt[3]{\frac{a \cdot -2}{g \cdot 2}}}
\end{array}
Initial program 49.4%
associate-/r*49.4%
metadata-eval49.4%
+-commutative49.4%
unsub-neg49.4%
fma-neg49.4%
sub-neg49.4%
distribute-neg-out49.4%
neg-mul-149.4%
associate-*r*49.4%
Simplified49.4%
clear-num49.1%
cbrt-div49.1%
metadata-eval49.1%
div-inv49.1%
metadata-eval49.1%
fma-udef49.1%
add-sqr-sqrt28.0%
hypot-def28.2%
add-sqr-sqrt28.2%
sqrt-unprod48.0%
sqr-neg48.0%
sqrt-unprod49.4%
add-sqr-sqrt49.4%
sqrt-prod22.8%
add-sqr-sqrt49.4%
Applied egg-rr49.4%
Taylor expanded in g around inf 25.8%
*-commutative25.8%
Simplified25.8%
Taylor expanded in g around inf 74.6%
unpow274.6%
associate-/l*79.3%
Simplified79.3%
Final simplification79.3%
(FPCore (g h a) :precision binary64 (+ (cbrt (* (/ -0.5 a) (- g g))) (cbrt (/ (- g) a))))
double code(double g, double h, double a) {
return cbrt(((-0.5 / a) * (g - g))) + cbrt((-g / a));
}
public static double code(double g, double h, double a) {
return Math.cbrt(((-0.5 / a) * (g - g))) + Math.cbrt((-g / a));
}
function code(g, h, a) return Float64(cbrt(Float64(Float64(-0.5 / a) * Float64(g - g))) + cbrt(Float64(Float64(-g) / a))) end
code[g_, h_, a_] := N[(N[Power[N[(N[(-0.5 / a), $MachinePrecision] * N[(g - g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] + N[Power[N[((-g) / a), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{-0.5}{a} \cdot \left(g - g\right)} + \sqrt[3]{\frac{-g}{a}}
\end{array}
Initial program 49.4%
Simplified49.4%
Taylor expanded in g around inf 21.5%
Taylor expanded in g around inf 76.9%
associate-*r/76.9%
neg-mul-176.9%
Simplified76.9%
Final simplification76.9%
(FPCore (g h a) :precision binary64 (+ (cbrt (* (/ -0.5 a) (- g g))) (cbrt (/ g a))))
double code(double g, double h, double a) {
return cbrt(((-0.5 / a) * (g - g))) + cbrt((g / a));
}
public static double code(double g, double h, double a) {
return Math.cbrt(((-0.5 / a) * (g - g))) + Math.cbrt((g / a));
}
function code(g, h, a) return Float64(cbrt(Float64(Float64(-0.5 / a) * Float64(g - g))) + cbrt(Float64(g / a))) end
code[g_, h_, a_] := N[(N[Power[N[(N[(-0.5 / a), $MachinePrecision] * N[(g - g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision] + N[Power[N[(g / a), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{\frac{-0.5}{a} \cdot \left(g - g\right)} + \sqrt[3]{\frac{g}{a}}
\end{array}
Initial program 49.4%
Simplified49.4%
Taylor expanded in g around inf 21.5%
Taylor expanded in g around inf 76.9%
associate-*r/76.9%
neg-mul-176.9%
Simplified76.9%
expm1-log1p-u51.8%
expm1-udef26.6%
add-sqr-sqrt13.4%
sqrt-unprod9.4%
sqr-neg9.4%
sqrt-unprod0.6%
add-sqr-sqrt1.6%
Applied egg-rr1.6%
expm1-def1.2%
expm1-log1p1.5%
Simplified1.5%
Final simplification1.5%
herbie shell --seed 2023199
(FPCore (g h a)
:name "2-ancestry mixing, positive discriminant"
:precision binary64
(+ (cbrt (* (/ 1.0 (* 2.0 a)) (+ (- g) (sqrt (- (* g g) (* h h)))))) (cbrt (* (/ 1.0 (* 2.0 a)) (- (- g) (sqrt (- (* g g) (* h h))))))))