double f(double a, double b, double c) {
double r1839496 = a;
double r1839497 = b;
double r1839498 = r1839496 + r1839497;
double r1839499 = c;
double r1839500 = r1839498 + r1839499;
double r1839501 = 2.0;
double r1839502 = r1839500 / r1839501;
double r1839503 = r1839502 - r1839496;
double r1839504 = r1839502 * r1839503;
double r1839505 = r1839502 - r1839497;
double r1839506 = r1839504 * r1839505;
double r1839507 = r1839502 - r1839499;
double r1839508 = r1839506 * r1839507;
double r1839509 = sqrt(r1839508);
return r1839509;
}