
(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 (* g -2.0)) (cbrt (* a 2.0))))
double code(double g, double h, double a) {
return cbrt((g * -2.0)) / cbrt((a * 2.0));
}
public static double code(double g, double h, double a) {
return Math.cbrt((g * -2.0)) / Math.cbrt((a * 2.0));
}
function code(g, h, a) return Float64(cbrt(Float64(g * -2.0)) / cbrt(Float64(a * 2.0))) end
code[g_, h_, a_] := N[(N[Power[N[(g * -2.0), $MachinePrecision], 1/3], $MachinePrecision] / N[Power[N[(a * 2.0), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{g \cdot -2}}{\sqrt[3]{a \cdot 2}}
\end{array}
Initial program 44.4%
Taylor expanded in g around inf
mul-1-negN/A
distribute-neg-frac2N/A
lower-/.f64N/A
lower-neg.f6429.5
Simplified29.5%
Taylor expanded in g around inf
*-commutativeN/A
lower-*.f64N/A
lower-cbrt.f64N/A
lower-cbrt.f64N/A
lower-/.f6478.6
Simplified78.6%
lift-/.f64N/A
cbrt-unprodN/A
neg-mul-1N/A
lift-/.f64N/A
distribute-frac-negN/A
lift-neg.f64N/A
cbrt-divN/A
lift-cbrt.f64N/A
lift-cbrt.f64N/A
frac-2negN/A
div-invN/A
lower-*.f64N/A
lower-neg.f64N/A
lower-/.f64N/A
lower-neg.f6496.8
Applied egg-rr96.8%
lift-neg.f64N/A
lift-cbrt.f64N/A
lift-neg.f64N/A
lift-cbrt.f64N/A
lift-neg.f64N/A
un-div-invN/A
clear-numN/A
metadata-evalN/A
lift-neg.f64N/A
lift-neg.f64N/A
frac-2negN/A
lift-cbrt.f64N/A
lift-cbrt.f64N/A
cbrt-divN/A
lift-neg.f64N/A
distribute-neg-frac2N/A
lift-/.f64N/A
neg-mul-1N/A
metadata-evalN/A
lift-/.f64N/A
times-fracN/A
lift-*.f64N/A
*-commutativeN/A
lift-*.f64N/A
*-lft-identityN/A
Applied egg-rr96.8%
(FPCore (g h a) :precision binary64 (if (<= (/ 1.0 (* a 2.0)) 5e+37) (- (cbrt (/ (/ 1.0 a) (/ 1.0 g)))) (* (cbrt (- g)) (pow a -0.3333333333333333))))
double code(double g, double h, double a) {
double tmp;
if ((1.0 / (a * 2.0)) <= 5e+37) {
tmp = -cbrt(((1.0 / a) / (1.0 / g)));
} else {
tmp = cbrt(-g) * pow(a, -0.3333333333333333);
}
return tmp;
}
public static double code(double g, double h, double a) {
double tmp;
if ((1.0 / (a * 2.0)) <= 5e+37) {
tmp = -Math.cbrt(((1.0 / a) / (1.0 / g)));
} else {
tmp = Math.cbrt(-g) * Math.pow(a, -0.3333333333333333);
}
return tmp;
}
function code(g, h, a) tmp = 0.0 if (Float64(1.0 / Float64(a * 2.0)) <= 5e+37) tmp = Float64(-cbrt(Float64(Float64(1.0 / a) / Float64(1.0 / g)))); else tmp = Float64(cbrt(Float64(-g)) * (a ^ -0.3333333333333333)); end return tmp end
code[g_, h_, a_] := If[LessEqual[N[(1.0 / N[(a * 2.0), $MachinePrecision]), $MachinePrecision], 5e+37], (-N[Power[N[(N[(1.0 / a), $MachinePrecision] / N[(1.0 / g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), N[(N[Power[(-g), 1/3], $MachinePrecision] * N[Power[a, -0.3333333333333333], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{1}{a \cdot 2} \leq 5 \cdot 10^{+37}:\\
\;\;\;\;-\sqrt[3]{\frac{\frac{1}{a}}{\frac{1}{g}}}\\
\mathbf{else}:\\
\;\;\;\;\sqrt[3]{-g} \cdot {a}^{-0.3333333333333333}\\
\end{array}
\end{array}
if (/.f64 #s(literal 1 binary64) (*.f64 #s(literal 2 binary64) a)) < 4.99999999999999989e37Initial program 43.6%
Taylor expanded in g around inf
associate-*r/N/A
lower-/.f64N/A
*-commutativeN/A
unpow2N/A
associate-*l*N/A
lower-*.f64N/A
lower-*.f6425.6
Simplified25.6%
Taylor expanded in g around inf
associate-*r/N/A
mul-1-negN/A
lower-/.f64N/A
lower-neg.f6476.9
Simplified76.9%
Taylor expanded in g around -inf
mul-1-negN/A
lower-neg.f64N/A
lower-cbrt.f64N/A
lower-/.f6482.2
Simplified82.2%
clear-numN/A
div-invN/A
associate-/r*N/A
lower-/.f64N/A
lower-/.f64N/A
lower-/.f6482.3
Applied egg-rr82.3%
if 4.99999999999999989e37 < (/.f64 #s(literal 1 binary64) (*.f64 #s(literal 2 binary64) a)) Initial program 47.5%
Taylor expanded in g around inf
mul-1-negN/A
distribute-neg-frac2N/A
lower-/.f64N/A
lower-neg.f6434.1
Simplified34.1%
Taylor expanded in g around inf
*-commutativeN/A
lower-*.f64N/A
lower-cbrt.f64N/A
lower-cbrt.f64N/A
lower-/.f6464.5
Simplified64.5%
lift-/.f64N/A
cbrt-unprodN/A
neg-mul-1N/A
lift-/.f64N/A
distribute-frac-negN/A
lift-neg.f64N/A
clear-numN/A
associate-/r/N/A
lift-/.f64N/A
cbrt-prodN/A
lift-cbrt.f64N/A
lift-cbrt.f64N/A
lower-*.f6494.1
lift-cbrt.f64N/A
pow1/3N/A
lift-/.f64N/A
inv-powN/A
pow-powN/A
lower-pow.f64N/A
metadata-eval87.7
Applied egg-rr87.7%
Final simplification83.4%
(FPCore (g h a) :precision binary64 (* (cbrt g) (/ -1.0 (cbrt a))))
double code(double g, double h, double a) {
return cbrt(g) * (-1.0 / cbrt(a));
}
public static double code(double g, double h, double a) {
return Math.cbrt(g) * (-1.0 / Math.cbrt(a));
}
function code(g, h, a) return Float64(cbrt(g) * Float64(-1.0 / cbrt(a))) end
code[g_, h_, a_] := N[(N[Power[g, 1/3], $MachinePrecision] * N[(-1.0 / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sqrt[3]{g} \cdot \frac{-1}{\sqrt[3]{a}}
\end{array}
Initial program 44.4%
Taylor expanded in g around inf
mul-1-negN/A
distribute-neg-frac2N/A
lower-/.f64N/A
lower-neg.f6429.5
Simplified29.5%
Taylor expanded in g around inf
*-commutativeN/A
lower-*.f64N/A
lower-cbrt.f64N/A
lower-cbrt.f64N/A
lower-/.f6478.6
Simplified78.6%
lift-/.f64N/A
cbrt-unprodN/A
neg-mul-1N/A
lift-/.f64N/A
distribute-frac-negN/A
lift-neg.f64N/A
cbrt-divN/A
lift-cbrt.f64N/A
lift-cbrt.f64N/A
frac-2negN/A
div-invN/A
lower-*.f64N/A
lower-neg.f64N/A
lower-/.f64N/A
lower-neg.f6496.8
Applied egg-rr96.8%
Taylor expanded in g around -inf
lower-cbrt.f6496.8
Simplified96.8%
Final simplification96.8%
(FPCore (g h a) :precision binary64 (/ (cbrt (- g)) (cbrt a)))
double code(double g, double h, double a) {
return cbrt(-g) / cbrt(a);
}
public static double code(double g, double h, double a) {
return Math.cbrt(-g) / Math.cbrt(a);
}
function code(g, h, a) return Float64(cbrt(Float64(-g)) / cbrt(a)) end
code[g_, h_, a_] := N[(N[Power[(-g), 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sqrt[3]{-g}}{\sqrt[3]{a}}
\end{array}
Initial program 44.4%
Taylor expanded in g around inf
mul-1-negN/A
distribute-neg-frac2N/A
lower-/.f64N/A
lower-neg.f6429.5
Simplified29.5%
Taylor expanded in g around inf
*-commutativeN/A
lower-*.f64N/A
lower-cbrt.f64N/A
lower-cbrt.f64N/A
lower-/.f6478.6
Simplified78.6%
lift-/.f64N/A
cbrt-unprodN/A
neg-mul-1N/A
lift-/.f64N/A
distribute-frac-negN/A
lift-neg.f64N/A
cbrt-divN/A
lift-cbrt.f64N/A
lift-cbrt.f64N/A
lift-/.f6496.8
Applied egg-rr96.8%
(FPCore (g h a) :precision binary64 (- (cbrt (/ (/ 1.0 a) (/ 1.0 g)))))
double code(double g, double h, double a) {
return -cbrt(((1.0 / a) / (1.0 / g)));
}
public static double code(double g, double h, double a) {
return -Math.cbrt(((1.0 / a) / (1.0 / g)));
}
function code(g, h, a) return Float64(-cbrt(Float64(Float64(1.0 / a) / Float64(1.0 / g)))) end
code[g_, h_, a_] := (-N[Power[N[(N[(1.0 / a), $MachinePrecision] / N[(1.0 / g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision])
\begin{array}{l}
\\
-\sqrt[3]{\frac{\frac{1}{a}}{\frac{1}{g}}}
\end{array}
Initial program 44.4%
Taylor expanded in g around inf
associate-*r/N/A
lower-/.f64N/A
*-commutativeN/A
unpow2N/A
associate-*l*N/A
lower-*.f64N/A
lower-*.f6427.1
Simplified27.1%
Taylor expanded in g around inf
associate-*r/N/A
mul-1-negN/A
lower-/.f64N/A
lower-neg.f6474.4
Simplified74.4%
Taylor expanded in g around -inf
mul-1-negN/A
lower-neg.f64N/A
lower-cbrt.f64N/A
lower-/.f6478.6
Simplified78.6%
clear-numN/A
div-invN/A
associate-/r*N/A
lower-/.f64N/A
lower-/.f64N/A
lower-/.f6478.7
Applied egg-rr78.7%
(FPCore (g h a) :precision binary64 (- (cbrt (* g (/ 1.0 a)))))
double code(double g, double h, double a) {
return -cbrt((g * (1.0 / a)));
}
public static double code(double g, double h, double a) {
return -Math.cbrt((g * (1.0 / a)));
}
function code(g, h, a) return Float64(-cbrt(Float64(g * Float64(1.0 / a)))) end
code[g_, h_, a_] := (-N[Power[N[(g * N[(1.0 / a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision])
\begin{array}{l}
\\
-\sqrt[3]{g \cdot \frac{1}{a}}
\end{array}
Initial program 44.4%
Taylor expanded in g around inf
associate-*r/N/A
lower-/.f64N/A
*-commutativeN/A
unpow2N/A
associate-*l*N/A
lower-*.f64N/A
lower-*.f6427.1
Simplified27.1%
Taylor expanded in g around inf
associate-*r/N/A
mul-1-negN/A
lower-/.f64N/A
lower-neg.f6474.4
Simplified74.4%
Taylor expanded in g around -inf
mul-1-negN/A
lower-neg.f64N/A
lower-cbrt.f64N/A
lower-/.f6478.6
Simplified78.6%
clear-numN/A
associate-/r/N/A
lower-*.f64N/A
lower-/.f6478.7
Applied egg-rr78.7%
Final simplification78.7%
(FPCore (g h a) :precision binary64 (- (cbrt (/ g a))))
double code(double g, double h, double a) {
return -cbrt((g / a));
}
public static double code(double g, double h, double a) {
return -Math.cbrt((g / a));
}
function code(g, h, a) return Float64(-cbrt(Float64(g / a))) end
code[g_, h_, a_] := (-N[Power[N[(g / a), $MachinePrecision], 1/3], $MachinePrecision])
\begin{array}{l}
\\
-\sqrt[3]{\frac{g}{a}}
\end{array}
Initial program 44.4%
Taylor expanded in g around inf
associate-*r/N/A
lower-/.f64N/A
*-commutativeN/A
unpow2N/A
associate-*l*N/A
lower-*.f64N/A
lower-*.f6427.1
Simplified27.1%
Taylor expanded in g around inf
associate-*r/N/A
mul-1-negN/A
lower-/.f64N/A
lower-neg.f6474.4
Simplified74.4%
Taylor expanded in g around -inf
mul-1-negN/A
lower-neg.f64N/A
lower-cbrt.f64N/A
lower-/.f6478.6
Simplified78.6%
herbie shell --seed 2024211
(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))))))))