[1261] | 1 | /* -*- C++ -*- |
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[1435] | 2 | * lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library |
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[1261] | 3 | * |
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| 4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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[1359] | 5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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[1261] | 6 | * |
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| 7 | * Permission to use, modify and distribute this software is granted |
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| 8 | * provided that this copyright notice appears in all copies. For |
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| 9 | * precise terms see the accompanying LICENSE file. |
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| 10 | * |
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| 11 | * This software is provided "AS IS" with no warranty of any kind, |
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| 12 | * express or implied, and with no claim as to its suitability for any |
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| 13 | * purpose. |
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| 14 | * |
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| 15 | */ |
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| 16 | |
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| 17 | #ifndef LEMON_LP_GLPK_H |
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| 18 | #define LEMON_LP_GLPK_H |
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| 19 | |
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| 20 | ///\file |
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| 21 | ///\brief Header of the LEMON-GLPK lp solver interface. |
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[1328] | 22 | ///\ingroup gen_opt_group |
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[1261] | 23 | |
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[1356] | 24 | #include <lemon/lp_base.h> |
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[1261] | 25 | extern "C" { |
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[1326] | 26 | #include <glpk.h> |
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[1261] | 27 | } |
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| 28 | |
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| 29 | namespace lemon { |
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| 30 | |
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| 31 | |
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[1398] | 32 | /// \brief Interface for the GLPK LP solver |
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[1261] | 33 | /// |
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[1398] | 34 | /// This class implements an interface for the GLPK LP solver. |
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[1328] | 35 | ///\ingroup gen_opt_group |
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[1261] | 36 | class LpGlpk : public LpSolverBase { |
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[1321] | 37 | protected: |
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| 38 | LPX* lp; |
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| 39 | |
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[1261] | 40 | public: |
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[1321] | 41 | |
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[1261] | 42 | typedef LpSolverBase Parent; |
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| 43 | |
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[1321] | 44 | LpGlpk(); |
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| 45 | ~LpGlpk(); |
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| 46 | |
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[1261] | 47 | protected: |
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[1364] | 48 | virtual LpSolverBase &_newLp(); |
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| 49 | virtual LpSolverBase &_copyLp(); |
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| 50 | |
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[1261] | 51 | virtual int _addCol(); |
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| 52 | virtual int _addRow(); |
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[1432] | 53 | virtual void _eraseCol(int i); |
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| 54 | virtual void _eraseRow(int i); |
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| 55 | |
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[1261] | 56 | virtual void _setRowCoeffs(int i, |
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| 57 | int length, |
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[1263] | 58 | const int * indices, |
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| 59 | const Value * values ); |
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[1261] | 60 | virtual void _setColCoeffs(int i, |
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| 61 | int length, |
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[1263] | 62 | const int * indices, |
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| 63 | const Value * values); |
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[1431] | 64 | virtual void _setCoeff(int row, int col, Value value); |
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[1261] | 65 | virtual void _setColLowerBound(int i, Value value); |
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| 66 | virtual void _setColUpperBound(int i, Value value); |
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[1405] | 67 | // virtual void _setRowLowerBound(int i, Value value); |
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| 68 | // virtual void _setRowUpperBound(int i, Value value); |
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[1379] | 69 | virtual void _setRowBounds(int i, Value lower, Value upper); |
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[1261] | 70 | virtual void _setObjCoeff(int i, Value obj_coef); |
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[1377] | 71 | virtual void _clearObj(); |
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| 72 | // virtual void _setObj(int length, |
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| 73 | // int const * indices, |
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| 74 | // Value const * values ) = 0; |
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[1376] | 75 | |
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[1263] | 76 | ///\e |
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| 77 | |
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[1321] | 78 | ///\todo It should be clarified |
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[1263] | 79 | /// |
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[1303] | 80 | virtual SolveExitStatus _solve(); |
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[1293] | 81 | virtual Value _getPrimal(int i); |
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[1312] | 82 | virtual Value _getPrimalValue(); |
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| 83 | ///\e |
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| 84 | |
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[1321] | 85 | ///\todo It should be clarified |
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[1312] | 86 | /// |
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| 87 | virtual SolutionStatus _getPrimalStatus(); |
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[1460] | 88 | virtual SolutionStatus _getDualStatus(); |
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| 89 | virtual ProblemTypes _getProblemType(); |
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| 90 | |
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[1321] | 91 | virtual void _setMax(); |
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| 92 | virtual void _setMin(); |
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[1261] | 93 | |
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[1321] | 94 | public: |
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| 95 | ///Set the verbosity of the messages |
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| 96 | |
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[1326] | 97 | ///Set the verbosity of the messages |
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| 98 | /// |
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[1321] | 99 | ///\param m is the level of the messages output by the solver routines. |
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| 100 | ///The possible values are: |
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| 101 | ///- 0 --- no output (default value) |
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| 102 | ///- 1 --- error messages only |
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| 103 | ///- 2 --- normal output |
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| 104 | ///- 3 --- full output (includes informational messages) |
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| 105 | void messageLevel(int m); |
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[1326] | 106 | ///Turns on or off the presolver |
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| 107 | |
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| 108 | ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver |
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| 109 | /// |
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| 110 | ///The presolver is off by default. |
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| 111 | void presolver(bool b); |
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[1312] | 112 | |
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[1261] | 113 | }; |
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| 114 | } //END OF NAMESPACE LEMON |
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| 115 | |
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| 116 | #endif //LEMON_LP_GLPK_H |
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| 117 | |
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