double f(double a, double b, double c) {
double r1830628 = a;
double r1830629 = b;
double r1830630 = r1830628 + r1830629;
double r1830631 = c;
double r1830632 = r1830630 + r1830631;
double r1830633 = 2.0;
double r1830634 = r1830632 / r1830633;
double r1830635 = r1830634 - r1830628;
double r1830636 = r1830634 * r1830635;
double r1830637 = r1830634 - r1830629;
double r1830638 = r1830636 * r1830637;
double r1830639 = r1830634 - r1830631;
double r1830640 = r1830638 * r1830639;
double r1830641 = sqrt(r1830640);
return r1830641;
}