x \cdot \sqrt{y \cdot y - z \cdot z}double f(double x, double y, double z) {
double r653565 = x;
double r653566 = y;
double r653567 = r653566 * r653566;
double r653568 = z;
double r653569 = r653568 * r653568;
double r653570 = r653567 - r653569;
double r653571 = sqrt(r653570);
double r653572 = r653565 * r653571;
return r653572;
}