double f(double a, double b, double c) {
double r5535459 = a;
double r5535460 = b;
double r5535461 = r5535459 + r5535460;
double r5535462 = c;
double r5535463 = r5535461 + r5535462;
double r5535464 = 2.0;
double r5535465 = r5535463 / r5535464;
double r5535466 = r5535465 - r5535459;
double r5535467 = r5535465 * r5535466;
double r5535468 = r5535465 - r5535460;
double r5535469 = r5535467 * r5535468;
double r5535470 = r5535465 - r5535462;
double r5535471 = r5535469 * r5535470;
double r5535472 = sqrt(r5535471);
return r5535472;
}