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 r662650 = x;
        double r662651 = y;
        double r662652 = r662651 * r662651;
        double r662653 = z;
        double r662654 = r662653 * r662653;
        double r662655 = r662652 - r662654;
        double r662656 = sqrt(r662655);
        double r662657 = r662650 * r662656;
        return r662657;
}