double f(double a, double b, double c) {
double r3500446 = a;
double r3500447 = b;
double r3500448 = r3500446 + r3500447;
double r3500449 = c;
double r3500450 = r3500448 + r3500449;
double r3500451 = 2.0;
double r3500452 = r3500450 / r3500451;
double r3500453 = r3500452 - r3500446;
double r3500454 = r3500452 * r3500453;
double r3500455 = r3500452 - r3500447;
double r3500456 = r3500454 * r3500455;
double r3500457 = r3500452 - r3500449;
double r3500458 = r3500456 * r3500457;
double r3500459 = sqrt(r3500458);
return r3500459;
}