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[Help-glpk] how to make the difference between "integer solution found"


From: Nicoco BERGER
Subject: [Help-glpk] how to make the difference between "integer solution found" and "no integer solution found" ?
Date: Tue, 11 Oct 2005 18:18:03 +0200 (CEST)

Hi

I am using the lp_integer function after lp_simplex in order to have integer 
solutions.
My problem is that I don't know how can make the difference between the state 
when the
solver gives this message :

+  2008: mip =     not found yet <=     tree is empty        (0; 613)


and that message :


+  2426: mip =   3.186700000e+04 <=     tree is empty   0.0% (0; 429)



What my programme is showing is that in the first case, there is no integer 
solution, and
that in the second case, there is an integer solution. But I don't know how to 
detect it
with the given functions :  lpx_mip_status, lpx_get_status(lp), 
lpx_get_prim_stat(lp), 
and lpx_get_dual_stat returns the same values in both cases !




        

        
                
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