COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/lemon/lp_glpk.h @ 1356:10d84041141c

Last change on this file since 1356:10d84041141c was 1356:10d84041141c, checked in by Akos Ladanyi, 15 years ago

Changed the includes.

File size: 2.7 KB
Line 
1/* -*- C++ -*-
2 * src/lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library
3 *
4 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
5 * (Egervary Combinatorial Optimization Research Group, EGRES).
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.
22///\ingroup gen_opt_group
23
24#include <lemon/lp_base.h>
25extern "C" {
26#include <glpk.h>
27}
28
29namespace lemon {
30
31
32  /// \brief Wrapper for GLPK solver
33  ///
34  /// This class implements a lemon wrapper for GLPK.
35  ///\ingroup gen_opt_group
36  class LpGlpk : public LpSolverBase {
37  protected:
38    LPX* lp;
39   
40  public:
41   
42    typedef LpSolverBase Parent;
43   
44    LpGlpk();
45    ~LpGlpk();
46   
47  protected:
48    virtual int _addCol();
49    virtual int _addRow();
50    virtual void _setRowCoeffs(int i,
51                               int length,
52                               const int   * indices,
53                               const Value   * values );
54    virtual void _setColCoeffs(int i,
55                               int length,
56                               const int   * indices,
57                               const Value   * values);
58    virtual void _setColLowerBound(int i, Value value);
59    virtual void _setColUpperBound(int i, Value value);
60    virtual void _setRowLowerBound(int i, Value value);
61    virtual void _setRowUpperBound(int i, Value value);
62    virtual void _setObjCoeff(int i, Value obj_coef);
63    ///\e
64   
65    ///\todo It should be clarified
66    ///
67    virtual SolveExitStatus _solve();
68    virtual Value _getPrimal(int i);
69    virtual Value _getPrimalValue();
70    ///\e
71   
72    ///\todo It should be clarified
73    ///
74    virtual SolutionStatus _getPrimalStatus();
75    virtual void _setMax();
76    virtual void _setMin();
77
78  public:
79    ///Set the verbosity of the messages
80
81    ///Set the verbosity of the messages
82    ///
83    ///\param m is the level of the messages output by the solver routines.
84    ///The possible values are:
85    ///- 0 --- no output (default value)
86    ///- 1 --- error messages only
87    ///- 2 --- normal output
88    ///- 3 --- full output (includes informational messages)
89    void messageLevel(int m);
90    ///Turns on or off the presolver
91
92    ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver
93    ///
94    ///The presolver is off by default.
95    void presolver(bool b);
96   
97  };
98} //END OF NAMESPACE LEMON
99
100#endif //LEMON_LP_GLPK_H
101
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