\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)}\begin{array}{l}
\mathbf{if}\;g \le 1.684852146070775135791317606686034572872 \cdot 10^{-148}:\\
\;\;\;\;\frac{\sqrt[3]{1 \cdot \left(\sqrt{g \cdot g - h \cdot h} - g\right)}}{\sqrt[3]{2 \cdot a}} + \sqrt[3]{\frac{1}{2 \cdot a} \cdot \left(\left(-g\right) - \sqrt{g \cdot g - h \cdot h}\right)}\\
\mathbf{else}:\\
\;\;\;\;\sqrt[3]{\frac{1}{2 \cdot a}} \cdot \sqrt[3]{\sqrt{g \cdot g - h \cdot h} - g} + \sqrt[3]{\frac{1}{2 \cdot a}} \cdot \sqrt[3]{\left(-g\right) - \sqrt{\sqrt{g \cdot g - h \cdot h}} \cdot \sqrt{\sqrt{g \cdot g - h \cdot h}}}\\
\end{array}double f(double g, double h, double a) {
double r121869 = 1.0;
double r121870 = 2.0;
double r121871 = a;
double r121872 = r121870 * r121871;
double r121873 = r121869 / r121872;
double r121874 = g;
double r121875 = -r121874;
double r121876 = r121874 * r121874;
double r121877 = h;
double r121878 = r121877 * r121877;
double r121879 = r121876 - r121878;
double r121880 = sqrt(r121879);
double r121881 = r121875 + r121880;
double r121882 = r121873 * r121881;
double r121883 = cbrt(r121882);
double r121884 = r121875 - r121880;
double r121885 = r121873 * r121884;
double r121886 = cbrt(r121885);
double r121887 = r121883 + r121886;
return r121887;
}
double f(double g, double h, double a) {
double r121888 = g;
double r121889 = 1.684852146070775e-148;
bool r121890 = r121888 <= r121889;
double r121891 = 1.0;
double r121892 = r121888 * r121888;
double r121893 = h;
double r121894 = r121893 * r121893;
double r121895 = r121892 - r121894;
double r121896 = sqrt(r121895);
double r121897 = r121896 - r121888;
double r121898 = r121891 * r121897;
double r121899 = cbrt(r121898);
double r121900 = 2.0;
double r121901 = a;
double r121902 = r121900 * r121901;
double r121903 = cbrt(r121902);
double r121904 = r121899 / r121903;
double r121905 = r121891 / r121902;
double r121906 = -r121888;
double r121907 = r121906 - r121896;
double r121908 = r121905 * r121907;
double r121909 = cbrt(r121908);
double r121910 = r121904 + r121909;
double r121911 = cbrt(r121905);
double r121912 = cbrt(r121897);
double r121913 = r121911 * r121912;
double r121914 = sqrt(r121896);
double r121915 = r121914 * r121914;
double r121916 = r121906 - r121915;
double r121917 = cbrt(r121916);
double r121918 = r121911 * r121917;
double r121919 = r121913 + r121918;
double r121920 = r121890 ? r121910 : r121919;
return r121920;
}



Bits error versus g



Bits error versus h



Bits error versus a
Results
if g < 1.684852146070775e-148Initial program 37.1
Simplified37.1
rmApplied associate-*l/37.1
Applied cbrt-div33.2
if 1.684852146070775e-148 < g Initial program 34.4
Simplified34.4
rmApplied cbrt-prod30.7
rmApplied cbrt-prod30.7
rmApplied add-sqr-sqrt30.7
Applied sqrt-prod30.7
Final simplification32.0
herbie shell --seed 2019306
(FPCore (g h a)
:name "2-ancestry mixing, positive discriminant"
:precision binary64
(+ (cbrt (* (/ 1 (* 2 a)) (+ (- g) (sqrt (- (* g g) (* h h)))))) (cbrt (* (/ 1 (* 2 a)) (- (- g) (sqrt (- (* g g) (* h h))))))))