double f(double a, double b, double c) {
double r4876011 = a;
double r4876012 = b;
double r4876013 = r4876011 + r4876012;
double r4876014 = c;
double r4876015 = r4876013 + r4876014;
double r4876016 = 2.0;
double r4876017 = r4876015 / r4876016;
double r4876018 = r4876017 - r4876011;
double r4876019 = r4876017 * r4876018;
double r4876020 = r4876017 - r4876012;
double r4876021 = r4876019 * r4876020;
double r4876022 = r4876017 - r4876014;
double r4876023 = r4876021 * r4876022;
double r4876024 = sqrt(r4876023);
return r4876024;
}