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 r770709 = x;
        double r770710 = y;
        double r770711 = r770710 * r770710;
        double r770712 = z;
        double r770713 = r770712 * r770712;
        double r770714 = r770711 - r770713;
        double r770715 = sqrt(r770714);
        double r770716 = r770709 * r770715;
        return r770716;
}