x \cdot \sqrt{y \cdot y - z \cdot z}double f(double x, double y, double z) {
double r568088 = x;
double r568089 = y;
double r568090 = r568089 * r568089;
double r568091 = z;
double r568092 = r568091 * r568091;
double r568093 = r568090 - r568092;
double r568094 = sqrt(r568093);
double r568095 = r568088 * r568094;
return r568095;
}