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 r683816 = x;
        double r683817 = y;
        double r683818 = r683817 * r683817;
        double r683819 = z;
        double r683820 = r683819 * r683819;
        double r683821 = r683818 - r683820;
        double r683822 = sqrt(r683821);
        double r683823 = r683816 * r683822;
        return r683823;
}