double f(double a, double b, double c) {
double r4748852 = a;
double r4748853 = b;
double r4748854 = r4748852 + r4748853;
double r4748855 = c;
double r4748856 = r4748854 + r4748855;
double r4748857 = 2.0;
double r4748858 = r4748856 / r4748857;
double r4748859 = r4748858 - r4748852;
double r4748860 = r4748858 * r4748859;
double r4748861 = r4748858 - r4748853;
double r4748862 = r4748860 * r4748861;
double r4748863 = r4748858 - r4748855;
double r4748864 = r4748862 * r4748863;
double r4748865 = sqrt(r4748864);
return r4748865;
}