double f(double a, double b, double c) {
double r2301468 = a;
double r2301469 = b;
double r2301470 = r2301468 + r2301469;
double r2301471 = c;
double r2301472 = r2301470 + r2301471;
double r2301473 = 2.0;
double r2301474 = r2301472 / r2301473;
double r2301475 = r2301474 - r2301468;
double r2301476 = r2301474 * r2301475;
double r2301477 = r2301474 - r2301469;
double r2301478 = r2301476 * r2301477;
double r2301479 = r2301474 - r2301471;
double r2301480 = r2301478 * r2301479;
double r2301481 = sqrt(r2301480);
return r2301481;
}