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 r811649 = x;
        double r811650 = y;
        double r811651 = r811650 * r811650;
        double r811652 = z;
        double r811653 = r811652 * r811652;
        double r811654 = r811651 - r811653;
        double r811655 = sqrt(r811654);
        double r811656 = r811649 * r811655;
        return r811656;
}