double f(double a, double b, double c) {
double r4961014 = a;
double r4961015 = b;
double r4961016 = r4961014 + r4961015;
double r4961017 = c;
double r4961018 = r4961016 + r4961017;
double r4961019 = 2.0;
double r4961020 = r4961018 / r4961019;
double r4961021 = r4961020 - r4961014;
double r4961022 = r4961020 * r4961021;
double r4961023 = r4961020 - r4961015;
double r4961024 = r4961022 * r4961023;
double r4961025 = r4961020 - r4961017;
double r4961026 = r4961024 * r4961025;
double r4961027 = sqrt(r4961026);
return r4961027;
}