COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/lp_skeleton.h @ 2229:4dbb6dd2dd4b

Last change on this file since 2229:4dbb6dd2dd4b was 1956:a055123339d5, checked in by Alpar Juttner, 14 years ago

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[1254]1/* -*- C++ -*-
2 *
[1956]3 * This file is a part of LEMON, a generic C++ optimization library
4 *
5 * Copyright (C) 2003-2006
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
[1359]7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
[1254]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
[1313]19#ifndef LEMON_LP_SKELETON
20#define LEMON_LP_SKELETON
[1254]21
[1356]22#include <lemon/lp_base.h>
[1254]23
24///\file
25///\brief A skeleton file to implement LP solver interfaces
26namespace lemon {
[1508]27
[1254]28  ///A skeleton class to implement LP solver interfaces
[1313]29  class LpSkeleton :public LpSolverBase {
[1273]30    int col_num,row_num;
31   
[1254]32  protected:
[1364]33    ///\e
34    virtual LpSolverBase &_newLp();
35    ///\e
36    virtual LpSolverBase &_copyLp();
[1294]37    /// \e
[1254]38    virtual int _addCol();
[1294]39    /// \e
[1254]40    virtual int _addRow();
[1294]41    /// \e
[1432]42    virtual void _eraseCol(int i);
43    /// \e
44    virtual void _eraseRow(int i);
45    /// \e
[1895]46    virtual void _getColName(int col,       std::string & name);
47    /// \e
48    virtual void _setColName(int col, const std::string & name);
49
50    /// \e
[1294]51
52    /// \warning Arrays are indexed from 1 (datum at index 0 is ignored)
53    ///
[1254]54    virtual void _setRowCoeffs(int i,
55                               int length,
56                               int  const * indices,
57                               Value  const * values );
[1294]58    /// \e
59
60    /// \warning Arrays are indexed from 1 (datum at index 0 is ignored)
61    ///
[1254]62    virtual void _setColCoeffs(int i,
63                               int length,
64                               int  const * indices,
[1294]65                               Value  const * values );
66   
[1431]67    /// Set one element of the coefficient matrix
68    virtual void _setCoeff(int row, int col, Value value);
[1294]69
70    /// The lower bound of a variable (column) have to be given by an
71    /// extended number of type Value, i.e. a finite number of type
72    /// Value or -\ref INF.
[1254]73    virtual void _setColLowerBound(int i, Value value);
[1294]74    /// \e
75
76    /// The upper bound of a variable (column) have to be given by an
77    /// extended number of type Value, i.e. a finite number of type
78    /// Value or \ref INF.
[1254]79    virtual void _setColUpperBound(int i, Value value);
[1294]80    /// \e
81
[1405]82//     /// The lower bound of a linear expression (row) have to be given by an
83//     /// extended number of type Value, i.e. a finite number of type
84//     /// Value or -\ref INF.
85//     virtual void _setRowLowerBound(int i, Value value);
86//     /// \e
87
88//     /// The upper bound of a linear expression (row) have to be given by an
89//     /// extended number of type Value, i.e. a finite number of type
90//     /// Value or \ref INF.
91//     virtual void _setRowUpperBound(int i, Value value);
92
93    /// The lower and upper bound of a linear expression (row) have to be
94    /// given by an
[1294]95    /// extended number of type Value, i.e. a finite number of type
[1405]96    /// Value or +/-\ref INF.
[1389]97    virtual void _setRowBounds(int i, Value lb, Value ub);
98    /// \e
99
[1294]100
101    /// \e
[1390]102    virtual void _clearObj();
103    /// \e
[1254]104    virtual void _setObjCoeff(int i, Value obj_coef);
[1294]105
106    ///\e
107   
108    ///\bug Wrong interface
109    ///
[1303]110    virtual SolveExitStatus _solve();
[1294]111
112    ///\e
113
114    ///\bug Wrong interface
115    ///
[1293]116    virtual Value _getPrimal(int i);
[1796]117
118    ///\e
119
120    ///\bug Wrong interface
121    ///
122    virtual Value _getDual(int i);
123
[1294]124    ///\e
125
126    ///\bug Wrong interface
127    ///
[1312]128    virtual Value _getPrimalValue();
[1796]129
[1312]130    ///\e
131
132    ///\bug Wrong interface
133    ///
134    virtual SolutionStatus _getPrimalStatus();
135
[1460]136    ////e
137    virtual SolutionStatus _getDualStatus();
138
139
140    ///\e
141    virtual ProblemTypes _getProblemType();
142
[1312]143    ///\e
144    virtual void _setMax();
145    ///\e
146    virtual void _setMin();
[1843]147
148    ///\e
149    virtual bool _isBasicCol(int i);
150
[1312]151   
[1294]152
[1273]153  public:
[1313]154    LpSkeleton() : LpSolverBase(), col_num(0), row_num(0) {}
[1254]155  }; 
156
157} //namespace lemon
158
[1313]159#endif // LEMON_LP_SKELETON
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