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 r563570 = x;
        double r563571 = y;
        double r563572 = r563571 * r563571;
        double r563573 = z;
        double r563574 = r563573 * r563573;
        double r563575 = r563572 - r563574;
        double r563576 = sqrt(r563575);
        double r563577 = r563570 * r563576;
        return r563577;
}