COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/lp_cplex.h

Last change on this file was 2605:852361980706, checked in by Balazs Dezso, 12 years ago

Bug fixes in LP solvers

  • the copyLp is clarified
  • newLp and copyLp gives back pointers
  • cplex gives back empty string for variables without name
  • cplex row and column retrieval
  • added macro for soplex
File size: 3.1 KB
Line 
1/* -*- C++ -*-
2 *
3 * This file is a part of LEMON, a generic C++ optimization library
4 *
5 * Copyright (C) 2003-2008
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
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_CPLEX_H
20#define LEMON_LP_CPLEX_H
21
22///\file
23///\brief Header of the LEMON-CPLEX lp solver interface.
24
25#include <lemon/lp_base.h>
26
27extern "C" {
28#include <ilcplex/cplex.h>
29}
30
31namespace lemon {
32
33
34  /// \brief Interface for the CPLEX solver
35  ///
36  /// This class implements an interface for the CPLEX LP solver.
37  class LpCplex :virtual public LpSolverBase {
38
39  public:
40
41    typedef LpSolverBase Parent;
42   
43    /// \e
44    int status;
45    CPXENVptr env;
46    CPXLPptr lp;
47
48
49    /// \e
50    LpCplex();
51    /// \e
52    LpCplex(const LpCplex&);
53    /// \e
54    ~LpCplex();
55
56  protected:
57    virtual LpSolverBase* _newLp();
58    virtual LpSolverBase* _copyLp();
59
60
61    virtual int _addCol();
62    virtual int _addRow();
63    virtual void _eraseCol(int i);
64    virtual void _eraseRow(int i);
65    virtual void _getColName(int col, std::string & name) const;
66    virtual void _setColName(int col, const std::string & name);
67    virtual int _colByName(const std::string& name) const;
68    virtual void _setRowCoeffs(int i, ConstRowIterator b, ConstRowIterator e);
69    virtual void _getRowCoeffs(int i, RowIterator b) const;
70    virtual void _setColCoeffs(int i, ConstColIterator b, ConstColIterator e);
71    virtual void _getColCoeffs(int i, ColIterator b) const;
72    virtual void _setCoeff(int row, int col, Value value);
73    virtual Value _getCoeff(int row, int col) const;
74
75    virtual void _setColLowerBound(int i, Value value);
76    virtual Value _getColLowerBound(int i) const;
77    virtual void _setColUpperBound(int i, Value value);
78    virtual Value _getColUpperBound(int i) const;
79
80//     virtual void _setRowLowerBound(int i, Value value);
81//     virtual void _setRowUpperBound(int i, Value value);
82    virtual void _setRowBounds(int i, Value lower, Value upper);
83    virtual void _getRowBounds(int i, Value &lb, Value &ub) const;
84    virtual void _setObjCoeff(int i, Value obj_coef);
85    virtual Value _getObjCoeff(int i) const;
86    virtual void _clearObj();
87
88   
89    virtual SolveExitStatus _solve();
90    virtual Value _getPrimal(int i) const;
91    virtual Value _getDual(int i) const;
92    virtual Value _getPrimalValue() const;
93    virtual bool _isBasicCol(int i) const;
94   
95    virtual SolutionStatus _getPrimalStatus() const;
96    virtual SolutionStatus _getDualStatus() const;
97    virtual ProblemTypes _getProblemType() const;
98
99   
100    virtual void _setMax();
101    virtual void _setMin();
102
103    virtual bool _isMax() const;
104
105  public:
106
107    CPXENVptr cplexEnv() { return env; }
108    CPXLPptr cplexLp() { return lp; }
109
110  };
111} //END OF NAMESPACE LEMON
112
113#endif //LEMON_LP_CPLEX_H
114
Note: See TracBrowser for help on using the repository browser.