[Help-glpk] infeasible ray

[Balazs Dezso]

Hi

I would like to generate a dual ray when the first phase of the primal simplex 
algorithm cannot reach the zero objective value. The auxiliary optimization  
problem's dual solution is exactly an infeasible ray (dual unbounded ray), but 
I do not know, how can I retrieve it in glpk. Could you advice some solution?

Best, Balazs