double f(double a, double b, double c) {
double r18340353 = a;
double r18340354 = b;
double r18340355 = r18340353 + r18340354;
double r18340356 = c;
double r18340357 = r18340355 + r18340356;
double r18340358 = 2.0;
double r18340359 = r18340357 / r18340358;
double r18340360 = r18340359 - r18340353;
double r18340361 = r18340359 * r18340360;
double r18340362 = r18340359 - r18340354;
double r18340363 = r18340361 * r18340362;
double r18340364 = r18340359 - r18340356;
double r18340365 = r18340363 * r18340364;
double r18340366 = sqrt(r18340365);
return r18340366;
}