An additional simplier interface for static size graphs.
Node operator()(int) for getting node by index
int index(Node node) for getting index by node
3 * This file is a part of LEMON, a generic C++ optimization library
5 * Copyright (C) 2003-2006
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
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.
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
19 #ifndef LEMON_LP_GLPK_H
20 #define LEMON_LP_GLPK_H
23 ///\brief Header of the LEMON-GLPK lp solver interface.
24 ///\ingroup gen_opt_group
26 #include <lemon/lp_base.h>
34 /// \brief Interface for the GLPK LP solver
36 /// This class implements an interface for the GLPK LP solver.
37 ///\ingroup gen_opt_group
38 class LpGlpk : public LpSolverBase {
44 typedef LpSolverBase Parent;
50 virtual LpSolverBase &_newLp();
51 virtual LpSolverBase &_copyLp();
53 virtual int _addCol();
54 virtual int _addRow();
55 virtual void _eraseCol(int i);
56 virtual void _eraseRow(int i);
57 virtual void _getColName(int col, std::string & name);
58 virtual void _setColName(int col, const std::string & name);
59 virtual void _setRowCoeffs(int i,
62 const Value * values );
63 virtual void _setColCoeffs(int i,
66 const Value * values);
67 virtual void _setCoeff(int row, int col, Value value);
68 virtual void _setColLowerBound(int i, Value value);
69 virtual void _setColUpperBound(int i, Value value);
70 // virtual void _setRowLowerBound(int i, Value value);
71 // virtual void _setRowUpperBound(int i, Value value);
72 virtual void _setRowBounds(int i, Value lower, Value upper);
73 virtual void _setObjCoeff(int i, Value obj_coef);
74 virtual void _clearObj();
75 // virtual void _setObj(int length,
76 // int const * indices,
77 // Value const * values ) = 0;
81 ///\todo It should be clarified
83 virtual SolveExitStatus _solve();
84 virtual Value _getPrimal(int i);
85 virtual Value _getDual(int i);
86 virtual Value _getPrimalValue();
87 virtual bool _isBasicCol(int i);
90 ///\todo It should be clarified
92 virtual SolutionStatus _getPrimalStatus();
93 virtual SolutionStatus _getDualStatus();
94 virtual ProblemTypes _getProblemType();
96 virtual void _setMax();
97 virtual void _setMin();
100 ///Set the verbosity of the messages
102 ///Set the verbosity of the messages
104 ///\param m is the level of the messages output by the solver routines.
105 ///The possible values are:
106 ///- 0 --- no output (default value)
107 ///- 1 --- error messages only
108 ///- 2 --- normal output
109 ///- 3 --- full output (includes informational messages)
110 void messageLevel(int m);
111 ///Turns on or off the presolver
113 ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver
115 ///The presolver is off by default.
116 void presolver(bool b);
119 } //END OF NAMESPACE LEMON
121 #endif //LEMON_LP_GLPK_H