Re: [Help-glpk] Can we set a row with equal upper and lower bound?

[Wenfei Wu]

sorry. I am stupid,
I can use GLP_FX......

On Fri, Jul 29, 2011 at 12:07 PM, Wenfei Wu <address@hidden> wrote:
> Hi, all
>   I am using GLPK now. the version is 4.45. I use it in Cygwin
>   I have a problem.
>   I set up a row with upper bound 0 and lower bound 0, the when I run
> it. Problem appears.
>
>  Code is
>   glp_set_row_bnds(lp, 1, GLP_DB, 0.0, 0.0);
>
>  output is
>  glp_simplex: row 1: lb = 0, ub = 0; incorrect bounds
>
>  Then I change the code
>   glp_set_row_bnds(lp, 1, GLP_DB, 0.0, 0.001);
> and it works.
>
>  Does this mean that we cannot set both bound equal?  But in the GLPK
> reference Manual, on page 13, it says "Bounds of variables can be
> nite as well as in nite. Besides, lower and upper bounds can be equal
> to each other."
>
>  Thanks.
>  Wenfei
>