double f(double a, double b, double c) {
double r2264923 = a;
double r2264924 = b;
double r2264925 = r2264923 + r2264924;
double r2264926 = c;
double r2264927 = r2264925 + r2264926;
double r2264928 = 2.0;
double r2264929 = r2264927 / r2264928;
double r2264930 = r2264929 - r2264923;
double r2264931 = r2264929 * r2264930;
double r2264932 = r2264929 - r2264924;
double r2264933 = r2264931 * r2264932;
double r2264934 = r2264929 - r2264926;
double r2264935 = r2264933 * r2264934;
double r2264936 = sqrt(r2264935);
return r2264936;
}