[Help-glpk] Re: sensitivity analysis

[Andrew Makhorin]

>I am work in a model, and after the optimization
>
>I need know the cost interval (limits) so that the basis 
>don't change, and the alternatives if the cost 
>exceed this limits. (this for basic variables)
>
>And for no-basics variables 
>I need know the cost for enter in the basis
>and how much are used.

You can use the routine lpx_print_sens_bnds (see src/glplpx8b.c),
which performs sensitivity analysis for right-hand sides and objective
coefficients. It is not documented yet, so please read comments to this
routine.