\left(\left(\left(\left(x \cdot \log y + z\right) + t\right) + a\right) + \left(b - 0.5\right) \cdot \log c\right) + y \cdot i
\left(\left(\left(\left(\left(x \cdot \left(\frac{2}{3} \cdot \log y + \log \left(\sqrt[3]{\sqrt[3]{y} \cdot \sqrt[3]{y}}\right)\right) + x \cdot \log \left(\sqrt[3]{\sqrt[3]{y}}\right)\right) + z\right) + t\right) + a\right) + \left(b - 0.5\right) \cdot \log c\right) + y \cdot idouble code(double x, double y, double z, double t, double a, double b, double c, double i) {
return ((double) (((double) (((double) (((double) (((double) (((double) (x * ((double) log(y)))) + z)) + t)) + a)) + ((double) (((double) (b - 0.5)) * ((double) log(c)))))) + ((double) (y * i))));
}
double code(double x, double y, double z, double t, double a, double b, double c, double i) {
return ((double) (((double) (((double) (((double) (((double) (((double) (((double) (x * ((double) (((double) (0.6666666666666666 * ((double) log(y)))) + ((double) log(((double) cbrt(((double) (((double) cbrt(y)) * ((double) cbrt(y)))))))))))) + ((double) (x * ((double) log(((double) cbrt(((double) cbrt(y)))))))))) + z)) + t)) + a)) + ((double) (((double) (b - 0.5)) * ((double) log(c)))))) + ((double) (y * i))));
}



Bits error versus x



Bits error versus y



Bits error versus z



Bits error versus t



Bits error versus a



Bits error versus b



Bits error versus c



Bits error versus i
Results
Initial program 0.1
rmApplied add-cube-cbrt0.1
Applied log-prod0.1
Applied distribute-lft-in0.1
Simplified0.1
rmApplied add-cube-cbrt0.1
Applied cbrt-prod0.1
Applied log-prod0.1
Applied distribute-lft-in0.1
Applied associate-+r+0.1
Simplified0.1
Final simplification0.1
herbie shell --seed 2020120
(FPCore (x y z t a b c i)
:name "Numeric.SpecFunctions:logBeta from math-functions-0.1.5.2, B"
:precision binary64
(+ (+ (+ (+ (+ (* x (log y)) z) t) a) (* (- b 0.5) (log c))) (* y i)))