\frac{\tan^{-1}_* \frac{im}{re}}{\log 10}double f(double re, double im) {
double r65920 = im;
double r65921 = re;
double r65922 = atan2(r65920, r65921);
double r65923 = 10.0;
double r65924 = log(r65923);
double r65925 = r65922 / r65924;
return r65925;
}