double f(double a, double b, double c) {
double r2986528 = a;
double r2986529 = b;
double r2986530 = r2986528 + r2986529;
double r2986531 = c;
double r2986532 = r2986530 + r2986531;
double r2986533 = 2.0;
double r2986534 = r2986532 / r2986533;
double r2986535 = r2986534 - r2986528;
double r2986536 = r2986534 * r2986535;
double r2986537 = r2986534 - r2986529;
double r2986538 = r2986536 * r2986537;
double r2986539 = r2986534 - r2986531;
double r2986540 = r2986538 * r2986539;
double r2986541 = sqrt(r2986540);
return r2986541;
}