double f(double a, double b, double c) {
double r2525766 = a;
double r2525767 = b;
double r2525768 = r2525766 + r2525767;
double r2525769 = c;
double r2525770 = r2525768 + r2525769;
double r2525771 = 2.0;
double r2525772 = r2525770 / r2525771;
double r2525773 = r2525772 - r2525766;
double r2525774 = r2525772 * r2525773;
double r2525775 = r2525772 - r2525767;
double r2525776 = r2525774 * r2525775;
double r2525777 = r2525772 - r2525769;
double r2525778 = r2525776 * r2525777;
double r2525779 = sqrt(r2525778);
return r2525779;
}