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 r631556 = x;
        double r631557 = y;
        double r631558 = r631557 * r631557;
        double r631559 = z;
        double r631560 = r631559 * r631559;
        double r631561 = r631558 - r631560;
        double r631562 = sqrt(r631561);
        double r631563 = r631556 * r631562;
        return r631563;
}