double f(double a, double b, double c) {
double r1043718 = a;
double r1043719 = b;
double r1043720 = r1043718 + r1043719;
double r1043721 = c;
double r1043722 = r1043720 + r1043721;
double r1043723 = 2.0;
double r1043724 = r1043722 / r1043723;
double r1043725 = r1043724 - r1043718;
double r1043726 = r1043724 * r1043725;
double r1043727 = r1043724 - r1043719;
double r1043728 = r1043726 * r1043727;
double r1043729 = r1043724 - r1043721;
double r1043730 = r1043728 * r1043729;
double r1043731 = sqrt(r1043730);
return r1043731;
}