COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/lp_glpk.h @ 1828:fd3771591a5c

Last change on this file since 1828:fd3771591a5c was 1787:932b8490caf0, checked in by marci, 14 years ago

bugfix in setCol, getting dual values

File size: 3.3 KB
RevLine 
[1261]1/* -*- C++ -*-
[1435]2 * lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library
[1261]3 *
4 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
[1359]5 * (Egervary Research Group on Combinatorial Optimization, EGRES).
[1261]6 *
7 * Permission to use, modify and distribute this software is granted
8 * provided that this copyright notice appears in all copies. For
9 * precise terms see the accompanying LICENSE file.
10 *
11 * This software is provided "AS IS" with no warranty of any kind,
12 * express or implied, and with no claim as to its suitability for any
13 * purpose.
14 *
15 */
16
17#ifndef LEMON_LP_GLPK_H
18#define LEMON_LP_GLPK_H
19
20///\file
21///\brief Header of the LEMON-GLPK lp solver interface.
[1328]22///\ingroup gen_opt_group
[1261]23
[1356]24#include <lemon/lp_base.h>
[1261]25extern "C" {
[1326]26#include <glpk.h>
[1261]27}
28
29namespace lemon {
30
31
[1398]32  /// \brief Interface for the GLPK LP solver
[1261]33  ///
[1398]34  /// This class implements an interface for the GLPK LP solver.
[1328]35  ///\ingroup gen_opt_group
[1261]36  class LpGlpk : public LpSolverBase {
[1321]37  protected:
38    LPX* lp;
39   
[1261]40  public:
[1321]41   
[1261]42    typedef LpSolverBase Parent;
43   
[1321]44    LpGlpk();
45    ~LpGlpk();
46   
[1261]47  protected:
[1364]48    virtual LpSolverBase &_newLp();
49    virtual LpSolverBase &_copyLp();
50
[1261]51    virtual int _addCol();
52    virtual int _addRow();
[1432]53    virtual void _eraseCol(int i);
54    virtual void _eraseRow(int i);
55
[1261]56    virtual void _setRowCoeffs(int i,
57                               int length,
[1263]58                               const int   * indices,
59                               const Value   * values );
[1261]60    virtual void _setColCoeffs(int i,
61                               int length,
[1263]62                               const int   * indices,
63                               const Value   * values);
[1431]64    virtual void _setCoeff(int row, int col, Value value);
[1261]65    virtual void _setColLowerBound(int i, Value value);
66    virtual void _setColUpperBound(int i, Value value);
[1405]67//     virtual void _setRowLowerBound(int i, Value value);
68//     virtual void _setRowUpperBound(int i, Value value);
[1379]69    virtual void _setRowBounds(int i, Value lower, Value upper);
[1261]70    virtual void _setObjCoeff(int i, Value obj_coef);
[1377]71    virtual void _clearObj();
72//     virtual void _setObj(int length,
73//                          int  const * indices,
74//                          Value  const * values ) = 0;
[1376]75
[1263]76    ///\e
77   
[1321]78    ///\todo It should be clarified
[1263]79    ///
[1303]80    virtual SolveExitStatus _solve();
[1293]81    virtual Value _getPrimal(int i);
[1787]82    virtual Value _getDual(int i);
[1312]83    virtual Value _getPrimalValue();
84    ///\e
85   
[1321]86    ///\todo It should be clarified
[1312]87    ///
88    virtual SolutionStatus _getPrimalStatus();
[1460]89    virtual SolutionStatus _getDualStatus();
90    virtual ProblemTypes _getProblemType();
91
[1321]92    virtual void _setMax();
93    virtual void _setMin();
[1261]94
[1321]95  public:
96    ///Set the verbosity of the messages
97
[1326]98    ///Set the verbosity of the messages
99    ///
[1321]100    ///\param m is the level of the messages output by the solver routines.
101    ///The possible values are:
102    ///- 0 --- no output (default value)
103    ///- 1 --- error messages only
104    ///- 2 --- normal output
105    ///- 3 --- full output (includes informational messages)
106    void messageLevel(int m);
[1326]107    ///Turns on or off the presolver
108
109    ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver
110    ///
111    ///The presolver is off by default.
112    void presolver(bool b);
[1312]113   
[1261]114  };
115} //END OF NAMESPACE LEMON
116
117#endif //LEMON_LP_GLPK_H
118
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