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 r493421 = x;
        double r493422 = y;
        double r493423 = r493422 * r493422;
        double r493424 = z;
        double r493425 = r493424 * r493424;
        double r493426 = r493423 - r493425;
        double r493427 = sqrt(r493426);
        double r493428 = r493421 * r493427;
        return r493428;
}