double f(double a, double b, double c) {
double r1053993 = a;
double r1053994 = b;
double r1053995 = r1053993 + r1053994;
double r1053996 = c;
double r1053997 = r1053995 + r1053996;
double r1053998 = 2.0;
double r1053999 = r1053997 / r1053998;
double r1054000 = r1053999 - r1053993;
double r1054001 = r1053999 * r1054000;
double r1054002 = r1053999 - r1053994;
double r1054003 = r1054001 * r1054002;
double r1054004 = r1053999 - r1053996;
double r1054005 = r1054003 * r1054004;
double r1054006 = sqrt(r1054005);
return r1054006;
}