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 r828863 = x;
        double r828864 = y;
        double r828865 = r828864 * r828864;
        double r828866 = z;
        double r828867 = r828866 * r828866;
        double r828868 = r828865 - r828867;
        double r828869 = sqrt(r828868);
        double r828870 = r828863 * r828869;
        return r828870;
}