[1261] | 1 | /* -*- C++ -*- |
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| 2 | * src/lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library |
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| 3 | * |
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| 4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 5 | * (Egervary Combinatorial Optimization Research Group, EGRES). |
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| 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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| 24 | #include "lp_base.h" |
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| 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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| 32 | /// \brief Wrapper for GLPK solver |
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| 33 | /// |
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| 34 | /// This class implements a lemon wrapper for GLPK. |
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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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| 48 | virtual int _addCol(); |
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| 49 | virtual int _addRow(); |
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| 50 | virtual void _setRowCoeffs(int i, |
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| 51 | int length, |
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[1263] | 52 | const int * indices, |
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| 53 | const Value * values ); |
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[1261] | 54 | virtual void _setColCoeffs(int i, |
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| 55 | int length, |
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[1263] | 56 | const int * indices, |
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| 57 | const Value * values); |
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[1261] | 58 | virtual void _setColLowerBound(int i, Value value); |
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| 59 | virtual void _setColUpperBound(int i, Value value); |
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| 60 | virtual void _setRowLowerBound(int i, Value value); |
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| 61 | virtual void _setRowUpperBound(int i, Value value); |
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| 62 | virtual void _setObjCoeff(int i, Value obj_coef); |
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[1263] | 63 | ///\e |
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| 64 | |
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[1321] | 65 | ///\todo It should be clarified |
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[1263] | 66 | /// |
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[1303] | 67 | virtual SolveExitStatus _solve(); |
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[1293] | 68 | virtual Value _getPrimal(int i); |
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[1312] | 69 | virtual Value _getPrimalValue(); |
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| 70 | ///\e |
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| 71 | |
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[1321] | 72 | ///\todo It should be clarified |
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[1312] | 73 | /// |
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| 74 | virtual SolutionStatus _getPrimalStatus(); |
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[1321] | 75 | virtual void _setMax(); |
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| 76 | virtual void _setMin(); |
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[1261] | 77 | |
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[1321] | 78 | public: |
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| 79 | ///Set the verbosity of the messages |
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| 80 | |
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[1326] | 81 | ///Set the verbosity of the messages |
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| 82 | /// |
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[1321] | 83 | ///\param m is the level of the messages output by the solver routines. |
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| 84 | ///The possible values are: |
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| 85 | ///- 0 --- no output (default value) |
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| 86 | ///- 1 --- error messages only |
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| 87 | ///- 2 --- normal output |
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| 88 | ///- 3 --- full output (includes informational messages) |
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| 89 | void messageLevel(int m); |
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[1326] | 90 | ///Turns on or off the presolver |
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| 91 | |
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| 92 | ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver |
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| 93 | /// |
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| 94 | ///The presolver is off by default. |
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| 95 | void presolver(bool b); |
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[1312] | 96 | |
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[1261] | 97 | }; |
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| 98 | } //END OF NAMESPACE LEMON |
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| 99 | |
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| 100 | #endif //LEMON_LP_GLPK_H |
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| 101 | |
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