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 r25649754 = x;
        double r25649755 = y;
        double r25649756 = r25649755 * r25649755;
        double r25649757 = z;
        double r25649758 = r25649757 * r25649757;
        double r25649759 = r25649756 - r25649758;
        double r25649760 = sqrt(r25649759);
        double r25649761 = r25649754 * r25649760;
        return r25649761;
}