double f(double a, double b, double c) {
double r1448660 = a;
double r1448661 = b;
double r1448662 = r1448660 + r1448661;
double r1448663 = c;
double r1448664 = r1448662 + r1448663;
double r1448665 = 2.0;
double r1448666 = r1448664 / r1448665;
double r1448667 = r1448666 - r1448660;
double r1448668 = r1448666 * r1448667;
double r1448669 = r1448666 - r1448661;
double r1448670 = r1448668 * r1448669;
double r1448671 = r1448666 - r1448663;
double r1448672 = r1448670 * r1448671;
double r1448673 = sqrt(r1448672);
return r1448673;
}