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 r780708 = x;
        double r780709 = y;
        double r780710 = r780709 * r780709;
        double r780711 = z;
        double r780712 = r780711 * r780711;
        double r780713 = r780710 - r780712;
        double r780714 = sqrt(r780713);
        double r780715 = r780708 * r780714;
        return r780715;
}