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 r868534 = x;
        double r868535 = y;
        double r868536 = r868535 * r868535;
        double r868537 = z;
        double r868538 = r868537 * r868537;
        double r868539 = r868536 - r868538;
        double r868540 = sqrt(r868539);
        double r868541 = r868534 * r868540;
        return r868541;
}