x \cdot \sqrt{y \cdot y - z \cdot z}double f(double x, double y, double z) {
double r29872326 = x;
double r29872327 = y;
double r29872328 = r29872327 * r29872327;
double r29872329 = z;
double r29872330 = r29872329 * r29872329;
double r29872331 = r29872328 - r29872330;
double r29872332 = sqrt(r29872331);
double r29872333 = r29872326 * r29872332;
return r29872333;
}