2-ancestry mixing, positive discriminant

Percentage Accurate: 44.4% → 95.8%
Time: 23.3s
Alternatives: 3
Speedup: 2.1×

Specification

?
\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{1}{2 \cdot a}\\ t_1 := \sqrt{g \cdot g - h \cdot h}\\ \sqrt[3]{t_0 \cdot \left(\left(-g\right) + t_1\right)} + \sqrt[3]{t_0 \cdot \left(\left(-g\right) - t_1\right)} \end{array} \end{array} \]
(FPCore (g h a)
 :precision binary64
 (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:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 3 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 44.4% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{1}{2 \cdot a}\\ t_1 := \sqrt{g \cdot g - h \cdot h}\\ \sqrt[3]{t_0 \cdot \left(\left(-g\right) + t_1\right)} + \sqrt[3]{t_0 \cdot \left(\left(-g\right) - t_1\right)} \end{array} \end{array} \]
(FPCore (g h a)
 :precision binary64
 (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}

Alternative 1: 95.8% accurate, 1.4× speedup?

\[\begin{array}{l} \\ \frac{\sqrt[3]{-g}}{\sqrt[3]{a}} + \sqrt[3]{\left(g - g\right) \cdot \frac{-0.5}{a}} \end{array} \]
(FPCore (g h a)
 :precision binary64
 (+ (/ (cbrt (- g)) (cbrt a)) (cbrt (* (- g g) (/ -0.5 a)))))
double code(double g, double h, double a) {
	return (cbrt(-g) / cbrt(a)) + cbrt(((g - g) * (-0.5 / a)));
}
public static double code(double g, double h, double a) {
	return (Math.cbrt(-g) / Math.cbrt(a)) + Math.cbrt(((g - g) * (-0.5 / a)));
}
function code(g, h, a)
	return Float64(Float64(cbrt(Float64(-g)) / cbrt(a)) + cbrt(Float64(Float64(g - g) * Float64(-0.5 / a))))
end
code[g_, h_, a_] := N[(N[(N[Power[(-g), 1/3], $MachinePrecision] / N[Power[a, 1/3], $MachinePrecision]), $MachinePrecision] + N[Power[N[(N[(g - g), $MachinePrecision] * N[(-0.5 / a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{\sqrt[3]{-g}}{\sqrt[3]{a}} + \sqrt[3]{\left(g - g\right) \cdot \frac{-0.5}{a}}
\end{array}
Derivation
  1. Initial program 47.0%

    \[\sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) + \sqrt{g \cdot g - h \cdot h}\right)} + \sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) - \sqrt{g \cdot g - h \cdot h}\right)} \]
  2. Simplified47.0%

    \[\leadsto \color{blue}{\sqrt[3]{\frac{0.5}{a} \cdot \left(\sqrt{g \cdot g - h \cdot h} - g\right)} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}}} \]
  3. Add Preprocessing
  4. Taylor expanded in g around -inf 29.0%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(-2 \cdot g\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  5. Step-by-step derivation
    1. *-commutative29.0%

      \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(g \cdot -2\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  6. Simplified29.0%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(g \cdot -2\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  7. Taylor expanded in g around -inf 69.8%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \left(g \cdot -2\right)} + \sqrt[3]{\left(g + \color{blue}{-1 \cdot g}\right) \cdot \frac{-0.5}{a}} \]
  8. Step-by-step derivation
    1. neg-mul-169.8%

      \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \left(g \cdot -2\right)} + \sqrt[3]{\left(g + \color{blue}{\left(-g\right)}\right) \cdot \frac{-0.5}{a}} \]
  9. Simplified69.8%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \left(g \cdot -2\right)} + \sqrt[3]{\left(g + \color{blue}{\left(-g\right)}\right) \cdot \frac{-0.5}{a}} \]
  10. Step-by-step derivation
    1. associate-*l/69.8%

      \[\leadsto \sqrt[3]{\color{blue}{\frac{0.5 \cdot \left(g \cdot -2\right)}{a}}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
    2. cbrt-div95.6%

      \[\leadsto \color{blue}{\frac{\sqrt[3]{0.5 \cdot \left(g \cdot -2\right)}}{\sqrt[3]{a}}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
    3. *-commutative95.6%

      \[\leadsto \frac{\sqrt[3]{0.5 \cdot \color{blue}{\left(-2 \cdot g\right)}}}{\sqrt[3]{a}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
    4. associate-*r*95.6%

      \[\leadsto \frac{\sqrt[3]{\color{blue}{\left(0.5 \cdot -2\right) \cdot g}}}{\sqrt[3]{a}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
    5. metadata-eval95.6%

      \[\leadsto \frac{\sqrt[3]{\color{blue}{-1} \cdot g}}{\sqrt[3]{a}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
    6. neg-mul-195.6%

      \[\leadsto \frac{\sqrt[3]{\color{blue}{-g}}}{\sqrt[3]{a}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
  11. Applied egg-rr95.6%

    \[\leadsto \color{blue}{\frac{\sqrt[3]{-g}}{\sqrt[3]{a}}} + \sqrt[3]{\left(g + \left(-g\right)\right) \cdot \frac{-0.5}{a}} \]
  12. Final simplification95.6%

    \[\leadsto \frac{\sqrt[3]{-g}}{\sqrt[3]{a}} + \sqrt[3]{\left(g - g\right) \cdot \frac{-0.5}{a}} \]
  13. Add Preprocessing

Alternative 2: 73.9% accurate, 2.1× speedup?

\[\begin{array}{l} \\ \sqrt[3]{0} + \sqrt[3]{\frac{-0.5}{a} \cdot \left(g + g\right)} \end{array} \]
(FPCore (g h a)
 :precision binary64
 (+ (cbrt 0.0) (cbrt (* (/ -0.5 a) (+ g g)))))
double code(double g, double h, double a) {
	return cbrt(0.0) + cbrt(((-0.5 / a) * (g + g)));
}
public static double code(double g, double h, double a) {
	return Math.cbrt(0.0) + Math.cbrt(((-0.5 / a) * (g + g)));
}
function code(g, h, a)
	return Float64(cbrt(0.0) + cbrt(Float64(Float64(-0.5 / a) * Float64(g + g))))
end
code[g_, h_, a_] := N[(N[Power[0.0, 1/3], $MachinePrecision] + N[Power[N[(N[(-0.5 / a), $MachinePrecision] * N[(g + g), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\sqrt[3]{0} + \sqrt[3]{\frac{-0.5}{a} \cdot \left(g + g\right)}
\end{array}
Derivation
  1. Initial program 47.0%

    \[\sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) + \sqrt{g \cdot g - h \cdot h}\right)} + \sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) - \sqrt{g \cdot g - h \cdot h}\right)} \]
  2. Simplified47.0%

    \[\leadsto \color{blue}{\sqrt[3]{\frac{0.5}{a} \cdot \left(\sqrt{g \cdot g - h \cdot h} - g\right)} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}}} \]
  3. Add Preprocessing
  4. Taylor expanded in g around -inf 29.0%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(-2 \cdot g\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  5. Step-by-step derivation
    1. *-commutative29.0%

      \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(g \cdot -2\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  6. Simplified29.0%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(g \cdot -2\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  7. Taylor expanded in g around inf 14.7%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \left(g \cdot -2\right)} + \sqrt[3]{\left(g + \color{blue}{g}\right) \cdot \frac{-0.5}{a}} \]
  8. Step-by-step derivation
    1. add-log-exp28.2%

      \[\leadsto \sqrt[3]{\color{blue}{\log \left(e^{\frac{0.5}{a} \cdot \left(g \cdot -2\right)}\right)}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    2. exp-prod46.3%

      \[\leadsto \sqrt[3]{\log \color{blue}{\left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g \cdot -2\right)}\right)}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    3. add-sqr-sqrt45.3%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(\sqrt{g \cdot -2} \cdot \sqrt{g \cdot -2}\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    4. sqrt-unprod46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(\sqrt{\left(g \cdot -2\right) \cdot \left(g \cdot -2\right)}\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    5. *-commutative46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(-2 \cdot g\right)} \cdot \left(g \cdot -2\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    6. *-commutative46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\left(-2 \cdot g\right) \cdot \color{blue}{\left(-2 \cdot g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    7. swap-sqr46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(-2 \cdot -2\right) \cdot \left(g \cdot g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    8. metadata-eval46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{4} \cdot \left(g \cdot g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    9. metadata-eval46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(2 \cdot 2\right)} \cdot \left(g \cdot g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    10. swap-sqr46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(2 \cdot g\right) \cdot \left(2 \cdot g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    11. count-246.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(g + g\right)} \cdot \left(2 \cdot g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    12. count-246.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\left(g + g\right) \cdot \color{blue}{\left(g + g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    13. sqrt-unprod43.7%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(\sqrt{g + g} \cdot \sqrt{g + g}\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    14. add-sqr-sqrt44.6%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(g + g\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    15. add-sqr-sqrt43.7%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\sqrt{g} \cdot \sqrt{g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    16. sqrt-prod54.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\sqrt{g \cdot g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    17. pow254.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \sqrt{\color{blue}{{g}^{2}}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    18. pow254.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \sqrt{\color{blue}{g \cdot g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    19. sqr-neg54.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \sqrt{\color{blue}{\left(-g\right) \cdot \left(-g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    20. sqrt-unprod48.9%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\sqrt{-g} \cdot \sqrt{-g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    21. add-sqr-sqrt69.8%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\left(-g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    22. sub-neg69.8%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(g - g\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    23. +-inverses69.8%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{0}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    24. metadata-eval69.8%

      \[\leadsto \sqrt[3]{\log \color{blue}{1}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
  9. Applied egg-rr69.8%

    \[\leadsto \sqrt[3]{\color{blue}{0}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
  10. Final simplification69.8%

    \[\leadsto \sqrt[3]{0} + \sqrt[3]{\frac{-0.5}{a} \cdot \left(g + g\right)} \]
  11. Add Preprocessing

Alternative 3: 74.0% accurate, 2.1× speedup?

\[\begin{array}{l} \\ \sqrt[3]{0} + \sqrt[3]{\frac{-g}{a}} \end{array} \]
(FPCore (g h a) :precision binary64 (+ (cbrt 0.0) (cbrt (/ (- g) a))))
double code(double g, double h, double a) {
	return cbrt(0.0) + cbrt((-g / a));
}
public static double code(double g, double h, double a) {
	return Math.cbrt(0.0) + Math.cbrt((-g / a));
}
function code(g, h, a)
	return Float64(cbrt(0.0) + cbrt(Float64(Float64(-g) / a)))
end
code[g_, h_, a_] := N[(N[Power[0.0, 1/3], $MachinePrecision] + N[Power[N[((-g) / a), $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\sqrt[3]{0} + \sqrt[3]{\frac{-g}{a}}
\end{array}
Derivation
  1. Initial program 47.0%

    \[\sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) + \sqrt{g \cdot g - h \cdot h}\right)} + \sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) - \sqrt{g \cdot g - h \cdot h}\right)} \]
  2. Simplified47.0%

    \[\leadsto \color{blue}{\sqrt[3]{\frac{0.5}{a} \cdot \left(\sqrt{g \cdot g - h \cdot h} - g\right)} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}}} \]
  3. Add Preprocessing
  4. Taylor expanded in g around -inf 29.0%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(-2 \cdot g\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  5. Step-by-step derivation
    1. *-commutative29.0%

      \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(g \cdot -2\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  6. Simplified29.0%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \color{blue}{\left(g \cdot -2\right)}} + \sqrt[3]{\left(g + \sqrt{g \cdot g - h \cdot h}\right) \cdot \frac{-0.5}{a}} \]
  7. Taylor expanded in g around inf 14.7%

    \[\leadsto \sqrt[3]{\frac{0.5}{a} \cdot \left(g \cdot -2\right)} + \sqrt[3]{\left(g + \color{blue}{g}\right) \cdot \frac{-0.5}{a}} \]
  8. Step-by-step derivation
    1. add-log-exp28.2%

      \[\leadsto \sqrt[3]{\color{blue}{\log \left(e^{\frac{0.5}{a} \cdot \left(g \cdot -2\right)}\right)}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    2. exp-prod46.3%

      \[\leadsto \sqrt[3]{\log \color{blue}{\left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g \cdot -2\right)}\right)}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    3. add-sqr-sqrt45.3%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(\sqrt{g \cdot -2} \cdot \sqrt{g \cdot -2}\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    4. sqrt-unprod46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(\sqrt{\left(g \cdot -2\right) \cdot \left(g \cdot -2\right)}\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    5. *-commutative46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(-2 \cdot g\right)} \cdot \left(g \cdot -2\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    6. *-commutative46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\left(-2 \cdot g\right) \cdot \color{blue}{\left(-2 \cdot g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    7. swap-sqr46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(-2 \cdot -2\right) \cdot \left(g \cdot g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    8. metadata-eval46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{4} \cdot \left(g \cdot g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    9. metadata-eval46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(2 \cdot 2\right)} \cdot \left(g \cdot g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    10. swap-sqr46.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(2 \cdot g\right) \cdot \left(2 \cdot g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    11. count-246.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\color{blue}{\left(g + g\right)} \cdot \left(2 \cdot g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    12. count-246.4%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(\sqrt{\left(g + g\right) \cdot \color{blue}{\left(g + g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    13. sqrt-unprod43.7%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(\sqrt{g + g} \cdot \sqrt{g + g}\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    14. add-sqr-sqrt44.6%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(g + g\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    15. add-sqr-sqrt43.7%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\sqrt{g} \cdot \sqrt{g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    16. sqrt-prod54.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\sqrt{g \cdot g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    17. pow254.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \sqrt{\color{blue}{{g}^{2}}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    18. pow254.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \sqrt{\color{blue}{g \cdot g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    19. sqr-neg54.1%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \sqrt{\color{blue}{\left(-g\right) \cdot \left(-g\right)}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    20. sqrt-unprod48.9%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\sqrt{-g} \cdot \sqrt{-g}}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    21. add-sqr-sqrt69.8%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\left(g + \color{blue}{\left(-g\right)}\right)}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    22. sub-neg69.8%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{\left(g - g\right)}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    23. +-inverses69.8%

      \[\leadsto \sqrt[3]{\log \left({\left(e^{\frac{0.5}{a}}\right)}^{\color{blue}{0}}\right)} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
    24. metadata-eval69.8%

      \[\leadsto \sqrt[3]{\log \color{blue}{1}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
  9. Applied egg-rr69.8%

    \[\leadsto \sqrt[3]{\color{blue}{0}} + \sqrt[3]{\left(g + g\right) \cdot \frac{-0.5}{a}} \]
  10. Taylor expanded in g around 0 69.8%

    \[\leadsto \sqrt[3]{0} + \sqrt[3]{\color{blue}{-1 \cdot \frac{g}{a}}} \]
  11. Step-by-step derivation
    1. associate-*r/69.8%

      \[\leadsto \sqrt[3]{0} + \sqrt[3]{\color{blue}{\frac{-1 \cdot g}{a}}} \]
    2. mul-1-neg69.8%

      \[\leadsto \sqrt[3]{0} + \sqrt[3]{\frac{\color{blue}{-g}}{a}} \]
  12. Simplified69.8%

    \[\leadsto \sqrt[3]{0} + \sqrt[3]{\color{blue}{\frac{-g}{a}}} \]
  13. Final simplification69.8%

    \[\leadsto \sqrt[3]{0} + \sqrt[3]{\frac{-g}{a}} \]
  14. Add Preprocessing

Reproduce

?
herbie shell --seed 2024019 
(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))))))))