COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/lemon/lp_skeleton.h @ 1364:ee5959aa4410

Last change on this file since 1364:ee5959aa4410 was 1364:ee5959aa4410, checked in by Alpar Juttner, 15 years ago
  • compile failure fixed
  • newLp(), copyLp() added
  • more doc.
File size: 3.1 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    /// \e
83    virtual void _setObjCoeff(int i, Value obj_coef);
84
85    ///\e
86   
87    ///\bug Wrong interface
88    ///
89    virtual SolveExitStatus _solve();
90
91    ///\e
92
93    ///\bug Wrong interface
94    ///
95    virtual Value _getPrimal(int i);
96    ///\e
97
98    ///\bug Wrong interface
99    ///
100    virtual Value _getPrimalValue();
101    ///\e
102
103    ///\bug Wrong interface
104    ///
105    virtual SolutionStatus _getPrimalStatus();
106
107    ///\e
108    virtual void _setMax();
109    ///\e
110    virtual void _setMin();
111   
112
113  public:
114    LpSkeleton() : LpSolverBase(), col_num(0), row_num(0) {}
115  }; 
116
117} //namespace lemon
118
119#endif // LEMON_LP_SKELETON
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