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 r438366 = x;
        double r438367 = y;
        double r438368 = r438367 * r438367;
        double r438369 = z;
        double r438370 = r438369 * r438369;
        double r438371 = r438368 - r438370;
        double r438372 = sqrt(r438371);
        double r438373 = r438366 * r438372;
        return r438373;
}