double f(double a, double b, double c) {
double r4564411 = a;
double r4564412 = b;
double r4564413 = r4564411 + r4564412;
double r4564414 = c;
double r4564415 = r4564413 + r4564414;
double r4564416 = 2.0;
double r4564417 = r4564415 / r4564416;
double r4564418 = r4564417 - r4564411;
double r4564419 = r4564417 * r4564418;
double r4564420 = r4564417 - r4564412;
double r4564421 = r4564419 * r4564420;
double r4564422 = r4564417 - r4564414;
double r4564423 = r4564421 * r4564422;
double r4564424 = sqrt(r4564423);
return r4564424;
}