x \cdot \sqrt{y \cdot y - z \cdot z}double f(double x, double y, double z) {
double r685205 = x;
double r685206 = y;
double r685207 = r685206 * r685206;
double r685208 = z;
double r685209 = r685208 * r685208;
double r685210 = r685207 - r685209;
double r685211 = sqrt(r685210);
double r685212 = r685205 * r685211;
return r685212;
}