double f(double a, double b, double c) {
double r4150229 = a;
double r4150230 = b;
double r4150231 = r4150229 + r4150230;
double r4150232 = c;
double r4150233 = r4150231 + r4150232;
double r4150234 = 2.0;
double r4150235 = r4150233 / r4150234;
double r4150236 = r4150235 - r4150229;
double r4150237 = r4150235 * r4150236;
double r4150238 = r4150235 - r4150230;
double r4150239 = r4150237 * r4150238;
double r4150240 = r4150235 - r4150232;
double r4150241 = r4150239 * r4150240;
double r4150242 = sqrt(r4150241);
return r4150242;
}