[Help-glpk] Re: rounding MIP obj values

[Andrew Makhorin]

>In the function record_solution(), I was wondering if there is any harm
>in including the following code:
>
>      double obj = tree->curr->lp_obj;
>      if (tree->int_obj)
>      {  double temp = floor(obj+ 0.5);
>         if (fabs(obj - temp) <= tree->tol_int)
>            obj = temp;
>         else
>            obj = ceil(obj);
>      }
>      tree->best[0] = obj;

This is ok.

>That is, we round the lp objective value before storing it. This is the same
>type of rounding that occurs in the is_better() routine.

BTW, if you need doing that to enumerate integer feasible solutions,
rounding the global bound is not critical.