double f(double a, double b, double c) {
double r28699324 = a;
double r28699325 = b;
double r28699326 = r28699324 + r28699325;
double r28699327 = c;
double r28699328 = r28699326 + r28699327;
double r28699329 = 2.0;
double r28699330 = r28699328 / r28699329;
double r28699331 = r28699330 - r28699324;
double r28699332 = r28699330 * r28699331;
double r28699333 = r28699330 - r28699325;
double r28699334 = r28699332 * r28699333;
double r28699335 = r28699330 - r28699327;
double r28699336 = r28699334 * r28699335;
double r28699337 = sqrt(r28699336);
return r28699337;
}