COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/lemon/lp_skeleton.h @ 1405:3626c7f10f14

Last change on this file since 1405:3626c7f10f14 was 1405:3626c7f10f14, checked in by athos, 16 years ago

Deleted _setRowLowerBound() and _setRowUpperBound() functions. Cplex worked (now it does not because of _getPrimalStatus()).

File size: 3.4 KB
Line 
1/* -*- C++ -*-
2 * src/lemon/lp_skeleton.h
3 * - Part of LEMON, a generic C++ optimization library
4 *
5 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
6 * (Egervary Research Group on Combinatorial Optimization, EGRES).
7 *
8 * Permission to use, modify and distribute this software is granted
9 * provided that this copyright notice appears in all copies. For
10 * precise terms see the accompanying LICENSE file.
11 *
12 * This software is provided "AS IS" with no warranty of any kind,
13 * express or implied, and with no claim as to its suitability for any
14 * purpose.
15 *
16 */
17
18#ifndef LEMON_LP_SKELETON
19#define LEMON_LP_SKELETON
20
21#include <lemon/lp_base.h>
22
23///\file
24///\brief A skeleton file to implement LP solver interfaces
25namespace lemon {
26 
27  ///A skeleton class to implement LP solver interfaces
28  class LpSkeleton :public LpSolverBase {
29    int col_num,row_num;
30   
31  protected:
32    ///\e
33    virtual LpSolverBase &_newLp();
34    ///\e
35    virtual LpSolverBase &_copyLp();
36    /// \e
37    virtual int _addCol();
38    /// \e
39    virtual int _addRow();
40    /// \e
41
42    /// \warning Arrays are indexed from 1 (datum at index 0 is ignored)
43    ///
44    virtual void _setRowCoeffs(int i,
45                               int length,
46                               int  const * indices,
47                               Value  const * values );
48    /// \e
49
50    /// \warning Arrays are indexed from 1 (datum at index 0 is ignored)
51    ///
52    virtual void _setColCoeffs(int i,
53                               int length,
54                               int  const * indices,
55                               Value  const * values );
56   
57    /// \e
58
59    /// The lower bound of a variable (column) have to be given by an
60    /// extended number of type Value, i.e. a finite number of type
61    /// Value or -\ref INF.
62    virtual void _setColLowerBound(int i, Value value);
63    /// \e
64
65    /// The upper bound of a variable (column) have to be given by an
66    /// extended number of type Value, i.e. a finite number of type
67    /// Value or \ref INF.
68    virtual void _setColUpperBound(int i, Value value);
69    /// \e
70
71//     /// The lower bound of a linear expression (row) have to be given by an
72//     /// extended number of type Value, i.e. a finite number of type
73//     /// Value or -\ref INF.
74//     virtual void _setRowLowerBound(int i, Value value);
75//     /// \e
76
77//     /// The upper bound of a linear expression (row) have to be given by an
78//     /// extended number of type Value, i.e. a finite number of type
79//     /// Value or \ref INF.
80//     virtual void _setRowUpperBound(int i, Value value);
81
82    /// The lower and upper bound of a linear expression (row) have to be
83    /// given by an
84    /// extended number of type Value, i.e. a finite number of type
85    /// Value or +/-\ref INF.
86    virtual void _setRowBounds(int i, Value lb, Value ub);
87    /// \e
88
89
90    /// \e
91    virtual void _clearObj();
92    /// \e
93    virtual void _setObjCoeff(int i, Value obj_coef);
94
95    ///\e
96   
97    ///\bug Wrong interface
98    ///
99    virtual SolveExitStatus _solve();
100
101    ///\e
102
103    ///\bug Wrong interface
104    ///
105    virtual Value _getPrimal(int i);
106    ///\e
107
108    ///\bug Wrong interface
109    ///
110    virtual Value _getPrimalValue();
111    ///\e
112
113    ///\bug Wrong interface
114    ///
115    virtual SolutionStatus _getPrimalStatus();
116
117    ///\e
118    virtual void _setMax();
119    ///\e
120    virtual void _setMin();
121   
122
123  public:
124    LpSkeleton() : LpSolverBase(), col_num(0), row_num(0) {}
125  }; 
126
127} //namespace lemon
128
129#endif // LEMON_LP_SKELETON
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