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 r567426 = x;
        double r567427 = y;
        double r567428 = r567427 * r567427;
        double r567429 = z;
        double r567430 = r567429 * r567429;
        double r567431 = r567428 - r567430;
        double r567432 = sqrt(r567431);
        double r567433 = r567426 * r567432;
        return r567433;
}