x \cdot \sqrt{y \cdot y - z \cdot z}double f(double x, double y, double z) {
double r550821 = x;
double r550822 = y;
double r550823 = r550822 * r550822;
double r550824 = z;
double r550825 = r550824 * r550824;
double r550826 = r550823 - r550825;
double r550827 = sqrt(r550826);
double r550828 = r550821 * r550827;
return r550828;
}