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 r653565 = x;
        double r653566 = y;
        double r653567 = r653566 * r653566;
        double r653568 = z;
        double r653569 = r653568 * r653568;
        double r653570 = r653567 - r653569;
        double r653571 = sqrt(r653570);
        double r653572 = r653565 * r653571;
        return r653572;
}