COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/lp_glpk.h @ 2553:bfced05fa852

Last change on this file since 2553:bfced05fa852 was 2553:bfced05fa852, checked in by Alpar Juttner, 16 years ago

Happy New Year to LEMON (+ better update-copyright-header script)

File size: 3.6 KB
RevLine 
[1261]1/* -*- C++ -*-
2 *
[1956]3 * This file is a part of LEMON, a generic C++ optimization library
4 *
[2553]5 * Copyright (C) 2003-2008
[1956]6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
[1359]7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
[1261]8 *
9 * Permission to use, modify and distribute this software is granted
10 * provided that this copyright notice appears in all copies. For
11 * precise terms see the accompanying LICENSE file.
12 *
13 * This software is provided "AS IS" with no warranty of any kind,
14 * express or implied, and with no claim as to its suitability for any
15 * purpose.
16 *
17 */
18
19#ifndef LEMON_LP_GLPK_H
20#define LEMON_LP_GLPK_H
21
22///\file
23///\brief Header of the LEMON-GLPK lp solver interface.
[2370]24///\ingroup lp_group
[1261]25
[1356]26#include <lemon/lp_base.h>
[1261]27extern "C" {
[1326]28#include <glpk.h>
[1261]29}
30
31namespace lemon {
32
33
[1398]34  /// \brief Interface for the GLPK LP solver
[1261]35  ///
[1398]36  /// This class implements an interface for the GLPK LP solver.
[2370]37  ///\ingroup lp_group
[2144]38  class LpGlpk : virtual public LpSolverBase {
[1321]39  protected:
40    LPX* lp;
[2441]41    bool solved;
[1321]42   
[1261]43  public:
[1321]44   
[1261]45    typedef LpSolverBase Parent;
46   
[1321]47    LpGlpk();
[2321]48    LpGlpk(const LpGlpk &);
[1321]49    ~LpGlpk();
50   
[1261]51  protected:
[1364]52    virtual LpSolverBase &_newLp();
53    virtual LpSolverBase &_copyLp();
54
[1261]55    virtual int _addCol();
56    virtual int _addRow();
[1432]57    virtual void _eraseCol(int i);
58    virtual void _eraseRow(int i);
[2366]59    virtual void _getColName(int col, std::string & name) const;
[1895]60    virtual void _setColName(int col, const std::string & name);
[2366]61    virtual int _colByName(const std::string& name) const;
[2364]62    virtual void _setRowCoeffs(int i, ConstRowIterator b, ConstRowIterator e);
[2366]63    virtual void _getRowCoeffs(int i, RowIterator b) const;
[2364]64    virtual void _setColCoeffs(int i, ConstColIterator b, ConstColIterator e);
[2366]65    virtual void _getColCoeffs(int i, ColIterator b) const;
[1431]66    virtual void _setCoeff(int row, int col, Value value);
[2366]67    virtual Value _getCoeff(int row, int col) const;
[2324]68
[1261]69    virtual void _setColLowerBound(int i, Value value);
[2366]70    virtual Value _getColLowerBound(int i) const;
[1261]71    virtual void _setColUpperBound(int i, Value value);
[2366]72    virtual Value _getColUpperBound(int i) const;
[2328]73
[1379]74    virtual void _setRowBounds(int i, Value lower, Value upper);
[2366]75    virtual void _getRowBounds(int i, Value &lb, Value &ub) const;
[1261]76    virtual void _setObjCoeff(int i, Value obj_coef);
[2366]77    virtual Value _getObjCoeff(int i) const;
[1377]78    virtual void _clearObj();
[1376]79
[1263]80    ///\e
81   
[1321]82    ///\todo It should be clarified
[1263]83    ///
[1303]84    virtual SolveExitStatus _solve();
[2366]85    virtual Value _getPrimal(int i) const;
86    virtual Value _getDual(int i) const;
87    virtual Value _getPrimalValue() const;
88    virtual bool _isBasicCol(int i) const;
[1312]89    ///\e
90   
[1321]91    ///\todo It should be clarified
[1312]92    ///
[2366]93    virtual SolutionStatus _getPrimalStatus() const;
94    virtual SolutionStatus _getDualStatus() const;
95    virtual ProblemTypes _getProblemType() const;
[1460]96
[1321]97    virtual void _setMax();
98    virtual void _setMin();
[1261]99
[2366]100    virtual bool _isMax() const;
[2324]101
[1321]102  public:
103    ///Set the verbosity of the messages
104
[1326]105    ///Set the verbosity of the messages
106    ///
[1321]107    ///\param m is the level of the messages output by the solver routines.
108    ///The possible values are:
109    ///- 0 --- no output (default value)
110    ///- 1 --- error messages only
111    ///- 2 --- normal output
112    ///- 3 --- full output (includes informational messages)
113    void messageLevel(int m);
[1326]114    ///Turns on or off the presolver
115
116    ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver
117    ///
118    ///The presolver is off by default.
119    void presolver(bool b);
[2321]120
121    LPX *lpx() {return lp;}
[1261]122  };
123} //END OF NAMESPACE LEMON
124
125#endif //LEMON_LP_GLPK_H
126
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