\frac{\tan^{-1}_* \frac{im}{re}}{\log 10}\sqrt{\frac{1}{\sqrt[3]{\sqrt{\log 10}} \cdot \sqrt[3]{\sqrt{\log 10}}}} \cdot \left(\sqrt{\frac{1}{\sqrt[3]{\sqrt{\log 10}}}} \cdot \left(\sqrt{\frac{1}{\sqrt{\log 10}}} \cdot \frac{\tan^{-1}_* \frac{im}{re}}{\sqrt{\log 10}}\right)\right)double code(double re, double im) {
return ((double) (((double) atan2(im, re)) / ((double) log(10.0))));
}
double code(double re, double im) {
return ((double) (((double) sqrt(((double) (1.0 / ((double) (((double) cbrt(((double) sqrt(((double) log(10.0)))))) * ((double) cbrt(((double) sqrt(((double) log(10.0)))))))))))) * ((double) (((double) sqrt(((double) (1.0 / ((double) cbrt(((double) sqrt(((double) log(10.0)))))))))) * ((double) (((double) sqrt(((double) (1.0 / ((double) sqrt(((double) log(10.0)))))))) * ((double) (((double) atan2(im, re)) / ((double) sqrt(((double) log(10.0))))))))))));
}



Bits error versus re



Bits error versus im
Results
Initial program 0.9
rmApplied add-sqr-sqrt0.9
Applied *-un-lft-identity0.9
Applied times-frac0.9
rmApplied add-sqr-sqrt0.9
Applied associate-*l*0.9
rmApplied add-cube-cbrt0.1
Applied *-un-lft-identity0.1
Applied times-frac0.1
Applied sqrt-prod0.1
Applied associate-*l*0.1
Final simplification0.1
herbie shell --seed 2020156
(FPCore (re im)
:name "math.log10 on complex, imaginary part"
:precision binary64
(/ (atan2 im re) (log 10.0)))