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 r28549303 = x;
        double r28549304 = y;
        double r28549305 = r28549304 * r28549304;
        double r28549306 = z;
        double r28549307 = r28549306 * r28549306;
        double r28549308 = r28549305 - r28549307;
        double r28549309 = sqrt(r28549308);
        double r28549310 = r28549303 * r28549309;
        return r28549310;
}