double f(double a, double b, double c) {
double r2226385 = a;
double r2226386 = b;
double r2226387 = r2226385 + r2226386;
double r2226388 = c;
double r2226389 = r2226387 + r2226388;
double r2226390 = 2.0;
double r2226391 = r2226389 / r2226390;
double r2226392 = r2226391 - r2226385;
double r2226393 = r2226391 * r2226392;
double r2226394 = r2226391 - r2226386;
double r2226395 = r2226393 * r2226394;
double r2226396 = r2226391 - r2226388;
double r2226397 = r2226395 * r2226396;
double r2226398 = sqrt(r2226397);
return r2226398;
}