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