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 r665953 = x;
        double r665954 = y;
        double r665955 = r665954 * r665954;
        double r665956 = z;
        double r665957 = r665956 * r665956;
        double r665958 = r665955 - r665957;
        double r665959 = sqrt(r665958);
        double r665960 = r665953 * r665959;
        return r665960;
}