double f(double a, double b, double c) {
double r1624477 = a;
double r1624478 = b;
double r1624479 = r1624477 + r1624478;
double r1624480 = c;
double r1624481 = r1624479 + r1624480;
double r1624482 = 2.0;
double r1624483 = r1624481 / r1624482;
double r1624484 = r1624483 - r1624477;
double r1624485 = r1624483 * r1624484;
double r1624486 = r1624483 - r1624478;
double r1624487 = r1624485 * r1624486;
double r1624488 = r1624483 - r1624480;
double r1624489 = r1624487 * r1624488;
double r1624490 = sqrt(r1624489);
return r1624490;
}