double f(double a, double b, double c) {
double r4738884 = a;
double r4738885 = b;
double r4738886 = r4738884 + r4738885;
double r4738887 = c;
double r4738888 = r4738886 + r4738887;
double r4738889 = 2.0;
double r4738890 = r4738888 / r4738889;
double r4738891 = r4738890 - r4738884;
double r4738892 = r4738890 * r4738891;
double r4738893 = r4738890 - r4738885;
double r4738894 = r4738892 * r4738893;
double r4738895 = r4738890 - r4738887;
double r4738896 = r4738894 * r4738895;
double r4738897 = sqrt(r4738896);
return r4738897;
}