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 r648345 = x;
        double r648346 = y;
        double r648347 = r648346 * r648346;
        double r648348 = z;
        double r648349 = r648348 * r648348;
        double r648350 = r648347 - r648349;
        double r648351 = sqrt(r648350);
        double r648352 = r648345 * r648351;
        return r648352;
}