\frac{\tan^{-1}_* \frac{im}{re}}{\log 10}double f(double re, double im) {
double r1581927 = im;
double r1581928 = re;
double r1581929 = atan2(r1581927, r1581928);
double r1581930 = 10.0;
double r1581931 = log(r1581930);
double r1581932 = r1581929 / r1581931;
return r1581932;
}