double f(double a, double b, double c) {
double r1096920 = a;
double r1096921 = b;
double r1096922 = r1096920 + r1096921;
double r1096923 = c;
double r1096924 = r1096922 + r1096923;
double r1096925 = 2.0;
double r1096926 = r1096924 / r1096925;
double r1096927 = r1096926 - r1096920;
double r1096928 = r1096926 * r1096927;
double r1096929 = r1096926 - r1096921;
double r1096930 = r1096928 * r1096929;
double r1096931 = r1096926 - r1096923;
double r1096932 = r1096930 * r1096931;
double r1096933 = sqrt(r1096932);
return r1096933;
}