double f(double a, double b, double c) {
double r5740798 = a;
double r5740799 = b;
double r5740800 = r5740798 + r5740799;
double r5740801 = c;
double r5740802 = r5740800 + r5740801;
double r5740803 = 2.0;
double r5740804 = r5740802 / r5740803;
double r5740805 = r5740804 - r5740798;
double r5740806 = r5740804 * r5740805;
double r5740807 = r5740804 - r5740799;
double r5740808 = r5740806 * r5740807;
double r5740809 = r5740804 - r5740801;
double r5740810 = r5740808 * r5740809;
double r5740811 = sqrt(r5740810);
return r5740811;
}