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 r440606 = x;
        double r440607 = y;
        double r440608 = r440607 * r440607;
        double r440609 = z;
        double r440610 = r440609 * r440609;
        double r440611 = r440608 - r440610;
        double r440612 = sqrt(r440611);
        double r440613 = r440606 * r440612;
        return r440613;
}