Cannot sample enough valid points. (more)

\[\tan^{-1}_* \frac{im}{re}\]
\tan^{-1}_* \frac{im}{re}
double f(double re, double im) {
        double r538639 = im;
        double r538640 = re;
        double r538641 = atan2(r538639, r538640);
        return r538641;
}