double f(double a, double b, double c) {
double r1751481 = a;
double r1751482 = b;
double r1751483 = r1751481 + r1751482;
double r1751484 = c;
double r1751485 = r1751483 + r1751484;
double r1751486 = 2.0;
double r1751487 = r1751485 / r1751486;
double r1751488 = r1751487 - r1751481;
double r1751489 = r1751487 * r1751488;
double r1751490 = r1751487 - r1751482;
double r1751491 = r1751489 * r1751490;
double r1751492 = r1751487 - r1751484;
double r1751493 = r1751491 * r1751492;
double r1751494 = sqrt(r1751493);
return r1751494;
}