double f(double a, double b, double c) {
double r2286206 = a;
double r2286207 = b;
double r2286208 = r2286206 + r2286207;
double r2286209 = c;
double r2286210 = r2286208 + r2286209;
double r2286211 = 2.0;
double r2286212 = r2286210 / r2286211;
double r2286213 = r2286212 - r2286206;
double r2286214 = r2286212 * r2286213;
double r2286215 = r2286212 - r2286207;
double r2286216 = r2286214 * r2286215;
double r2286217 = r2286212 - r2286209;
double r2286218 = r2286216 * r2286217;
double r2286219 = sqrt(r2286218);
return r2286219;
}