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 r477437 = x;
        double r477438 = y;
        double r477439 = r477438 * r477438;
        double r477440 = z;
        double r477441 = r477440 * r477440;
        double r477442 = r477439 - r477441;
        double r477443 = sqrt(r477442);
        double r477444 = r477437 * r477443;
        return r477444;
}