COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/lemon/lp_glpk.h @ 1364:ee5959aa4410

Last change on this file since 1364:ee5959aa4410 was 1364:ee5959aa4410, checked in by Alpar Juttner, 15 years ago
  • compile failure fixed
  • newLp(), copyLp() added
  • more doc.
File size: 2.8 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 Research Group on Combinatorial Optimization, 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 an interface 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 LpSolverBase &_newLp();
49    virtual LpSolverBase &_copyLp();
50
51    virtual int _addCol();
52    virtual int _addRow();
53    virtual void _setRowCoeffs(int i,
54                               int length,
55                               const int   * indices,
56                               const Value   * values );
57    virtual void _setColCoeffs(int i,
58                               int length,
59                               const int   * indices,
60                               const Value   * values);
61    virtual void _setColLowerBound(int i, Value value);
62    virtual void _setColUpperBound(int i, Value value);
63    virtual void _setRowLowerBound(int i, Value value);
64    virtual void _setRowUpperBound(int i, Value value);
65    virtual void _setObjCoeff(int i, Value obj_coef);
66    ///\e
67   
68    ///\todo It should be clarified
69    ///
70    virtual SolveExitStatus _solve();
71    virtual Value _getPrimal(int i);
72    virtual Value _getPrimalValue();
73    ///\e
74   
75    ///\todo It should be clarified
76    ///
77    virtual SolutionStatus _getPrimalStatus();
78    virtual void _setMax();
79    virtual void _setMin();
80
81  public:
82    ///Set the verbosity of the messages
83
84    ///Set the verbosity of the messages
85    ///
86    ///\param m is the level of the messages output by the solver routines.
87    ///The possible values are:
88    ///- 0 --- no output (default value)
89    ///- 1 --- error messages only
90    ///- 2 --- normal output
91    ///- 3 --- full output (includes informational messages)
92    void messageLevel(int m);
93    ///Turns on or off the presolver
94
95    ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver
96    ///
97    ///The presolver is off by default.
98    void presolver(bool b);
99   
100  };
101} //END OF NAMESPACE LEMON
102
103#endif //LEMON_LP_GLPK_H
104
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