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 r861047 = x;
        double r861048 = y;
        double r861049 = r861048 * r861048;
        double r861050 = z;
        double r861051 = r861050 * r861050;
        double r861052 = r861049 - r861051;
        double r861053 = sqrt(r861052);
        double r861054 = r861047 * r861053;
        return r861054;
}