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 r615784 = x;
        double r615785 = y;
        double r615786 = r615785 * r615785;
        double r615787 = z;
        double r615788 = r615787 * r615787;
        double r615789 = r615786 - r615788;
        double r615790 = sqrt(r615789);
        double r615791 = r615784 * r615790;
        return r615791;
}