Cannot sample enough valid points. (more)

\[x \cdot \sqrt{y \cdot y - z \cdot z}\]
x \cdot \sqrt{y \cdot y - z \cdot z}
double f(double x, double y, double z) {
        double r660734 = x;
        double r660735 = y;
        double r660736 = r660735 * r660735;
        double r660737 = z;
        double r660738 = r660737 * r660737;
        double r660739 = r660736 - r660738;
        double r660740 = sqrt(r660739);
        double r660741 = r660734 * r660740;
        return r660741;
}