COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/work/athos/lp/lp_glpk.h @ 1261:9d0deeea8c08

Last change on this file since 1261:9d0deeea8c08 was 1261:9d0deeea8c08, checked in by athos, 15 years ago

Low level interface for GLPK (Marci után szabadon)

File size: 1.8 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 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
23#include "lp_base.h"
24extern "C" {
25#include "glpk.h"
26}
27
28namespace lemon {
29
30
31  /// \brief Wrapper for GLPK solver
32  ///
33  /// This class implements a lemon wrapper for GLPK.
34  class LpGlpk : public LpSolverBase {
35
36  public:
37
38    typedef LpSolverBase Parent;
39   
40    /// \e
41    LPX* lp;
42
43    /// \e
44    LpGlpk() : Parent(),
45                        lp(lpx_create_prob()) {
46      lpx_set_int_parm(lp, LPX_K_DUAL, 1);
47    }
48    /// \e
49    ~LpGlpk() {
50      lpx_delete_prob(lp);
51    }
52
53  protected:
54    virtual int _addCol();
55    virtual int _addRow();
56    virtual void _setRowCoeffs(int i,
57                               int length,
58                               int   * indices,
59                               Value   * values );
60    virtual void _setColCoeffs(int i,
61                               int length,
62                               int   * indices,
63                               Value   * values);
64    virtual void _setColLowerBound(int i, Value value);
65    virtual void _setColUpperBound(int i, Value value);
66    virtual void _setRowLowerBound(int i, Value value);
67    virtual void _setRowUpperBound(int i, Value value);
68    virtual void _setObjCoeff(int i, Value obj_coef);
69
70  };
71} //END OF NAMESPACE LEMON
72
73#endif //LEMON_LP_GLPK_H
74
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