COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/lp_soplex.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: 3.4 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_SOPLEX_H
20#define LEMON_LP_SOPLEX_H
21
22///\file
23///\brief Header of the LEMON-SOPLEX lp solver interface.
24
25#include <vector>
26#include <string>
27
28#include <lemon/lp_base.h>
29
30// Forward declaration
31namespace soplex {
32  class SoPlex;
33}
34
35namespace lemon {
36
37  /// \ingroup lp_group
38  ///
39  /// \brief Interface for the SOPLEX solver
40  ///
41  /// This class implements an interface for the SoPlex LP solver.
42  /// The SoPlex library is an object oriented lp solver library
43  /// developed at the Konrad-Zuse-Zentrum für Informationstechnik
44  /// Berlin (ZIB). You can find detailed information about it at the
45  /// <tt>http://soplex.zib.de</tt> address.
46  class LpSoplex :virtual public LpSolverBase {
47  protected:
48
49    _lp_bits::RelocateIdHandler relocateIdHandler;
50
51    soplex::SoPlex* soplex;
52    bool solved;
53
54    std::vector<std::string> colNames;
55    std::map<std::string, int> invColNames;
56
57    std::vector<Value> primal_value;
58    std::vector<Value> dual_value;
59
60
61  public:
62
63    typedef LpSolverBase Parent;
64   
65
66    /// \e
67    LpSoplex();
68    /// \e
69    LpSoplex(const LpSoplex&);
70    /// \e
71    ~LpSoplex();
72
73  protected:
74
75    virtual LpSolverBase* _newLp();
76    virtual LpSolverBase* _copyLp();
77
78    virtual int _addCol();
79    virtual int _addRow();
80    virtual void _eraseCol(int i);
81    virtual void _eraseRow(int i);
82    virtual void _getColName(int col, std::string & name) const;
83    virtual void _setColName(int col, const std::string & name);
84    virtual int _colByName(const std::string& name) const;
85    virtual void _setRowCoeffs(int i, ConstRowIterator b, ConstRowIterator e);
86    virtual void _getRowCoeffs(int i, RowIterator b) const;
87    virtual void _setColCoeffs(int i, ConstColIterator b, ConstColIterator e);
88    virtual void _getColCoeffs(int i, ColIterator b) const;
89    virtual void _setCoeff(int row, int col, Value value);
90    virtual Value _getCoeff(int row, int col) const;
91    virtual void _setColLowerBound(int i, Value value);
92    virtual Value _getColLowerBound(int i) const;
93    virtual void _setColUpperBound(int i, Value value);
94    virtual Value _getColUpperBound(int i) const;
95    virtual void _setRowBounds(int i, Value lower, Value upper);
96    virtual void _getRowBounds(int i, Value &lower, Value &upper) const;
97    virtual void _setObjCoeff(int i, Value obj_coef);
98    virtual Value _getObjCoeff(int i) const;
99    virtual void _clearObj();
100   
101    virtual SolveExitStatus _solve();
102    virtual Value _getPrimal(int i) const;
103    virtual Value _getDual(int i) const;
104    virtual Value _getPrimalValue() const;
105    virtual bool _isBasicCol(int i) const;
106   
107    virtual SolutionStatus _getPrimalStatus() const;
108    virtual SolutionStatus _getDualStatus() const;
109    virtual ProblemTypes _getProblemType() const;
110
111   
112    virtual void _setMax();
113    virtual void _setMin();
114    virtual bool _isMax() const;
115
116  };
117} //END OF NAMESPACE LEMON
118
119#endif //LEMON_LP_SOPLEX_H
120
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