athos@1261: /* -*- C++ -*-
athos@1261:  * src/lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library
athos@1261:  *
athos@1261:  * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
athos@1261:  * (Egervary Combinatorial Optimization Research Group, EGRES).
athos@1261:  *
athos@1261:  * Permission to use, modify and distribute this software is granted
athos@1261:  * provided that this copyright notice appears in all copies. For
athos@1261:  * precise terms see the accompanying LICENSE file.
athos@1261:  *
athos@1261:  * This software is provided "AS IS" with no warranty of any kind,
athos@1261:  * express or implied, and with no claim as to its suitability for any
athos@1261:  * purpose.
athos@1261:  *
athos@1261:  */
athos@1261: 
athos@1261: #ifndef LEMON_LP_GLPK_H
athos@1261: #define LEMON_LP_GLPK_H
athos@1261: 
athos@1261: ///\file
athos@1261: ///\brief Header of the LEMON-GLPK lp solver interface.
athos@1261: 
athos@1261: #include "lp_base.h"
athos@1261: extern "C" {
athos@1261: #include "glpk.h"
athos@1261: }
athos@1261: 
athos@1261: namespace lemon {
athos@1261: 
athos@1261: 
athos@1261:   /// \brief Wrapper for GLPK solver
athos@1261:   /// 
athos@1261:   /// This class implements a lemon wrapper for GLPK.
athos@1261:   class LpGlpk : public LpSolverBase {
athos@1261: 
athos@1261:   public:
athos@1261: 
athos@1261:     typedef LpSolverBase Parent;
athos@1261:     
athos@1261:     /// \e
athos@1261:     LPX* lp;
athos@1261: 
athos@1261:     /// \e
athos@1261:     LpGlpk() : Parent(), 
athos@1261: 			lp(lpx_create_prob()) {
athos@1261:       lpx_set_int_parm(lp, LPX_K_DUAL, 1);
athos@1261:     }
athos@1261:     /// \e
athos@1261:     ~LpGlpk() {
athos@1261:       lpx_delete_prob(lp);
athos@1261:     }
athos@1261: 
athos@1261:   protected:
athos@1261:     virtual int _addCol();
athos@1261:     virtual int _addRow();
athos@1261:     virtual void _setRowCoeffs(int i, 
athos@1261: 			       int length,
athos@1261:                                int   * indices, 
athos@1261:                                Value   * values );
athos@1261:     virtual void _setColCoeffs(int i, 
athos@1261: 			       int length,
athos@1261:                                int   * indices, 
athos@1261:                                Value   * values);
athos@1261:     virtual void _setColLowerBound(int i, Value value);
athos@1261:     virtual void _setColUpperBound(int i, Value value);
athos@1261:     virtual void _setRowLowerBound(int i, Value value);
athos@1261:     virtual void _setRowUpperBound(int i, Value value);
athos@1261:     virtual void _setObjCoeff(int i, Value obj_coef);
athos@1261: 
athos@1261:   };
athos@1261: } //END OF NAMESPACE LEMON
athos@1261: 
athos@1261: #endif //LEMON_LP_GLPK_H
athos@1261: