double f(double a, double b, double c) {
double r1811234 = a;
double r1811235 = b;
double r1811236 = r1811234 + r1811235;
double r1811237 = c;
double r1811238 = r1811236 + r1811237;
double r1811239 = 2.0;
double r1811240 = r1811238 / r1811239;
double r1811241 = r1811240 - r1811234;
double r1811242 = r1811240 * r1811241;
double r1811243 = r1811240 - r1811235;
double r1811244 = r1811242 * r1811243;
double r1811245 = r1811240 - r1811237;
double r1811246 = r1811244 * r1811245;
double r1811247 = sqrt(r1811246);
return r1811247;
}