Re: [Help-glpk] How to solve a dual problem

[Andrew Makhorin]

>>If necessary, you may create a separate problem object (glp_prob) and
>>solve it within the callback routine. Or you mean something else?

> Our real question is:
> given a glp_prob is there any api functios to generate the dual
> problem (rows, cols ...).

A problem object for the dual problem can be generated with existing
api routines. However, this is not needed, because the glpk simplex
solver provides primal as well as dual solution components, i.e. having
a single problem object is sufficient to work in both primal and dual
spaces.