Cannot sample enough valid points. (more)

\[e^{\log \left(\sqrt{x.re \cdot x.re + x.im \cdot x.im}\right) \cdot y.re - \tan^{-1}_* \frac{x.im}{x.re} \cdot y.im} \cdot \sin \left(\log \left(\sqrt{x.re \cdot x.re + x.im \cdot x.im}\right) \cdot y.im + \tan^{-1}_* \frac{x.im}{x.re} \cdot y.re\right)\]
e^{\log \left(\sqrt{x.re \cdot x.re + x.im \cdot x.im}\right) \cdot y.re - \tan^{-1}_* \frac{x.im}{x.re} \cdot y.im} \cdot \sin \left(\log \left(\sqrt{x.re \cdot x.re + x.im \cdot x.im}\right) \cdot y.im + \tan^{-1}_* \frac{x.im}{x.re} \cdot y.re\right)
double f(double x_re, double x_im, double y_re, double y_im) {
        double r540757 = x_re;
        double r540758 = r540757 * r540757;
        double r540759 = x_im;
        double r540760 = r540759 * r540759;
        double r540761 = r540758 + r540760;
        double r540762 = sqrt(r540761);
        double r540763 = log(r540762);
        double r540764 = y_re;
        double r540765 = r540763 * r540764;
        double r540766 = atan2(r540759, r540757);
        double r540767 = y_im;
        double r540768 = r540766 * r540767;
        double r540769 = r540765 - r540768;
        double r540770 = exp(r540769);
        double r540771 = r540763 * r540767;
        double r540772 = r540766 * r540764;
        double r540773 = r540771 + r540772;
        double r540774 = sin(r540773);
        double r540775 = r540770 * r540774;
        return r540775;
}