COIN-OR::LEMON - Graph Library

source: lemon-1.2/lemon/clp.h @ 512:9b9ffe7d9b75

Last change on this file since 512:9b9ffe7d9b75 was 462:9b082b3fb33f, checked in by Alpar Juttner <alpar@…>, 11 years ago

Rename Lp*/Mip* to *Lp/*Mip

File size: 4.9 KB
Line 
1/* -*- mode: C++; indent-tabs-mode: nil; -*-
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_CLP_H
20#define LEMON_CLP_H
21
22///\file
23///\brief Header of the LEMON-CLP lp solver interface.
24
25#include <vector>
26#include <string>
27
28#include <lemon/lp_base.h>
29
30class ClpSimplex;
31
32namespace lemon {
33
34  /// \ingroup lp_group
35  ///
36  /// \brief Interface for the CLP solver
37  ///
38  /// This class implements an interface for the Clp LP solver.  The
39  /// Clp library is an object oriented lp solver library developed at
40  /// the IBM. The CLP is part of the COIN-OR package and it can be
41  /// used with Common Public License.
42  class ClpLp : public LpSolver {
43  protected:
44
45    ClpSimplex* _prob;
46
47    std::map<std::string, int> _col_names_ref;
48    std::map<std::string, int> _row_names_ref;
49
50  public:
51
52    /// \e
53    ClpLp();
54    /// \e
55    ClpLp(const ClpLp&);
56    /// \e
57    ~ClpLp();
58
59  protected:
60
61    mutable double* _primal_ray;
62    mutable double* _dual_ray;
63
64    void _init_temporals();
65    void _clear_temporals();
66
67  protected:
68
69    virtual ClpLp* _newSolver() const;
70    virtual ClpLp* _cloneSolver() const;
71
72    virtual const char* _solverName() const;
73
74    virtual int _addCol();
75    virtual int _addRow();
76
77    virtual void _eraseCol(int i);
78    virtual void _eraseRow(int i);
79
80    virtual void _eraseColId(int i);
81    virtual void _eraseRowId(int i);
82
83    virtual void _getColName(int col, std::string& name) const;
84    virtual void _setColName(int col, const std::string& name);
85    virtual int _colByName(const std::string& name) const;
86
87    virtual void _getRowName(int row, std::string& name) const;
88    virtual void _setRowName(int row, const std::string& name);
89    virtual int _rowByName(const std::string& name) const;
90
91    virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e);
92    virtual void _getRowCoeffs(int i, InsertIterator b) const;
93
94    virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e);
95    virtual void _getColCoeffs(int i, InsertIterator b) const;
96
97    virtual void _setCoeff(int row, int col, Value value);
98    virtual Value _getCoeff(int row, int col) const;
99
100    virtual void _setColLowerBound(int i, Value value);
101    virtual Value _getColLowerBound(int i) const;
102    virtual void _setColUpperBound(int i, Value value);
103    virtual Value _getColUpperBound(int i) const;
104
105    virtual void _setRowLowerBound(int i, Value value);
106    virtual Value _getRowLowerBound(int i) const;
107    virtual void _setRowUpperBound(int i, Value value);
108    virtual Value _getRowUpperBound(int i) const;
109
110    virtual void _setObjCoeffs(ExprIterator, ExprIterator);
111    virtual void _getObjCoeffs(InsertIterator) const;
112
113    virtual void _setObjCoeff(int i, Value obj_coef);
114    virtual Value _getObjCoeff(int i) const;
115
116    virtual void _setSense(Sense sense);
117    virtual Sense _getSense() const;
118
119    virtual SolveExitStatus _solve();
120
121    virtual Value _getPrimal(int i) const;
122    virtual Value _getDual(int i) const;
123
124    virtual Value _getPrimalValue() const;
125
126    virtual Value _getPrimalRay(int i) const;
127    virtual Value _getDualRay(int i) const;
128
129    virtual VarStatus _getColStatus(int i) const;
130    virtual VarStatus _getRowStatus(int i) const;
131
132    virtual ProblemType _getPrimalType() const;
133    virtual ProblemType _getDualType() const;
134
135    virtual void _clear();
136
137  public:
138
139    ///Solves LP with primal simplex method.
140    SolveExitStatus solvePrimal();
141
142    ///Solves LP with dual simplex method.
143    SolveExitStatus solveDual();
144
145    ///Solves LP with barrier method.
146    SolveExitStatus solveBarrier();
147
148    ///Returns the constraint identifier understood by CLP.
149    int clpRow(Row r) const { return rows(id(r)); }
150
151    ///Returns the variable identifier understood by CLP.
152    int clpCol(Col c) const { return cols(id(c)); }
153
154    ///Enum for \c messageLevel() parameter
155    enum MessageLevel {
156      /// no output (default value)
157      MESSAGE_NO_OUTPUT = 0,
158      /// print final solution
159      MESSAGE_FINAL_SOLUTION = 1,
160      /// print factorization
161      MESSAGE_FACTORIZATION = 2,
162      /// normal output
163      MESSAGE_NORMAL_OUTPUT = 3,
164      /// verbose output
165      MESSAGE_VERBOSE_OUTPUT = 4
166    };
167    ///Set the verbosity of the messages
168
169    ///Set the verbosity of the messages
170    ///
171    ///\param m is the level of the messages output by the solver routines.
172    void messageLevel(MessageLevel m);
173
174  };
175
176} //END OF NAMESPACE LEMON
177
178#endif //LEMON_CLP_H
179
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