double f(double a, double b, double c) {
double r1605624 = a;
double r1605625 = b;
double r1605626 = r1605624 + r1605625;
double r1605627 = c;
double r1605628 = r1605626 + r1605627;
double r1605629 = 2.0;
double r1605630 = r1605628 / r1605629;
double r1605631 = r1605630 - r1605624;
double r1605632 = r1605630 * r1605631;
double r1605633 = r1605630 - r1605625;
double r1605634 = r1605632 * r1605633;
double r1605635 = r1605630 - r1605627;
double r1605636 = r1605634 * r1605635;
double r1605637 = sqrt(r1605636);
return r1605637;
}