double f(double a, double b, double c) {
double r4741025 = a;
double r4741026 = b;
double r4741027 = r4741025 + r4741026;
double r4741028 = c;
double r4741029 = r4741027 + r4741028;
double r4741030 = 2.0;
double r4741031 = r4741029 / r4741030;
double r4741032 = r4741031 - r4741025;
double r4741033 = r4741031 * r4741032;
double r4741034 = r4741031 - r4741026;
double r4741035 = r4741033 * r4741034;
double r4741036 = r4741031 - r4741028;
double r4741037 = r4741035 * r4741036;
double r4741038 = sqrt(r4741037);
return r4741038;
}