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Re: [Bug-glpk] Error delete column


From: Cedric[FR]
Subject: Re: [Bug-glpk] Error delete column
Date: Wed, 5 Mar 2008 14:05:52 +0300



Thank you for the bug report.

Could you please provide the following information:

a) which version of glpk you are using? (Just type 'glpsol -v'.)

I use the version 4.25. I can use the version 4.27.

b) which glpk api routines were called since the last successful call
   to glp_simplex (or lpx_simplex, or lpx_warm_up)?

Let,

  glp_prob * glpkProbPtr;
  glp_smcp glpkParamPtr;

I use:

  glpkParamPtr.presolve=GLP_OFF;

  int ret=glp_simplex(glpkProbPtr,&glpkParamPtr);

  if (ret == GLP_EBADB){
    ret = lpx_warm_up(glpkProbPtr); 
    if (ret == LPX_E_BADB){ 
      lpx_std_basis(glpkProbPtr);
      if(glp_simplex(glpkProbPtr,&glpkParamPtr)!=0)
        cout<<"could not solve LP"<<endl;
    }
  }

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