[461] | 1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
---|
| 2 | * |
---|
| 3 | * This file is a part of LEMON, a generic C++ optimization library. |
---|
| 4 | * |
---|
| 5 | * Copyright (C) 2003-2008 |
---|
| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
| 8 | * |
---|
| 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. |
---|
| 12 | * |
---|
| 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 |
---|
| 15 | * purpose. |
---|
| 16 | * |
---|
| 17 | */ |
---|
| 18 | |
---|
| 19 | #ifndef LEMON_CLP_H |
---|
| 20 | #define LEMON_CLP_H |
---|
| 21 | |
---|
| 22 | ///\file |
---|
| 23 | ///\brief Header of the LEMON-CLP lp solver interface. |
---|
| 24 | |
---|
| 25 | #include <vector> |
---|
| 26 | #include <string> |
---|
| 27 | |
---|
| 28 | #include <lemon/lp_base.h> |
---|
| 29 | |
---|
| 30 | class ClpSimplex; |
---|
| 31 | |
---|
| 32 | namespace lemon { |
---|
| 33 | |
---|
| 34 | /// \ingroup lp_group |
---|
| 35 | /// |
---|
| 36 | /// \brief Interface for the CLP solver |
---|
| 37 | /// |
---|
| 38 | /// This class implements an interface for the Clp LP solver. The |
---|
| 39 | /// Clp library is an object oriented lp solver library developed at |
---|
| 40 | /// the IBM. The CLP is part of the COIN-OR package and it can be |
---|
| 41 | /// used with Common Public License. |
---|
[462] | 42 | class ClpLp : public LpSolver { |
---|
[461] | 43 | protected: |
---|
| 44 | |
---|
| 45 | ClpSimplex* _prob; |
---|
| 46 | |
---|
| 47 | std::map<std::string, int> _col_names_ref; |
---|
| 48 | std::map<std::string, int> _row_names_ref; |
---|
| 49 | |
---|
| 50 | public: |
---|
| 51 | |
---|
| 52 | /// \e |
---|
[462] | 53 | ClpLp(); |
---|
[461] | 54 | /// \e |
---|
[462] | 55 | ClpLp(const ClpLp&); |
---|
[461] | 56 | /// \e |
---|
[462] | 57 | ~ClpLp(); |
---|
[461] | 58 | |
---|
[528] | 59 | /// \e |
---|
| 60 | virtual ClpLp* newSolver() const; |
---|
| 61 | /// \e |
---|
| 62 | virtual ClpLp* cloneSolver() const; |
---|
| 63 | |
---|
[461] | 64 | protected: |
---|
| 65 | |
---|
| 66 | mutable double* _primal_ray; |
---|
| 67 | mutable double* _dual_ray; |
---|
| 68 | |
---|
| 69 | void _init_temporals(); |
---|
| 70 | void _clear_temporals(); |
---|
| 71 | |
---|
| 72 | protected: |
---|
| 73 | |
---|
| 74 | virtual const char* _solverName() const; |
---|
| 75 | |
---|
| 76 | virtual int _addCol(); |
---|
| 77 | virtual int _addRow(); |
---|
| 78 | |
---|
| 79 | virtual void _eraseCol(int i); |
---|
| 80 | virtual void _eraseRow(int i); |
---|
| 81 | |
---|
| 82 | virtual void _eraseColId(int i); |
---|
| 83 | virtual void _eraseRowId(int i); |
---|
| 84 | |
---|
| 85 | virtual void _getColName(int col, std::string& name) const; |
---|
| 86 | virtual void _setColName(int col, const std::string& name); |
---|
| 87 | virtual int _colByName(const std::string& name) const; |
---|
| 88 | |
---|
| 89 | virtual void _getRowName(int row, std::string& name) const; |
---|
| 90 | virtual void _setRowName(int row, const std::string& name); |
---|
| 91 | virtual int _rowByName(const std::string& name) const; |
---|
| 92 | |
---|
| 93 | virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
---|
| 94 | virtual void _getRowCoeffs(int i, InsertIterator b) const; |
---|
| 95 | |
---|
| 96 | virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
---|
| 97 | virtual void _getColCoeffs(int i, InsertIterator b) const; |
---|
| 98 | |
---|
| 99 | virtual void _setCoeff(int row, int col, Value value); |
---|
| 100 | virtual Value _getCoeff(int row, int col) const; |
---|
| 101 | |
---|
| 102 | virtual void _setColLowerBound(int i, Value value); |
---|
| 103 | virtual Value _getColLowerBound(int i) const; |
---|
| 104 | virtual void _setColUpperBound(int i, Value value); |
---|
| 105 | virtual Value _getColUpperBound(int i) const; |
---|
| 106 | |
---|
| 107 | virtual void _setRowLowerBound(int i, Value value); |
---|
| 108 | virtual Value _getRowLowerBound(int i) const; |
---|
| 109 | virtual void _setRowUpperBound(int i, Value value); |
---|
| 110 | virtual Value _getRowUpperBound(int i) const; |
---|
| 111 | |
---|
| 112 | virtual void _setObjCoeffs(ExprIterator, ExprIterator); |
---|
| 113 | virtual void _getObjCoeffs(InsertIterator) const; |
---|
| 114 | |
---|
| 115 | virtual void _setObjCoeff(int i, Value obj_coef); |
---|
| 116 | virtual Value _getObjCoeff(int i) const; |
---|
| 117 | |
---|
| 118 | virtual void _setSense(Sense sense); |
---|
| 119 | virtual Sense _getSense() const; |
---|
| 120 | |
---|
| 121 | virtual SolveExitStatus _solve(); |
---|
| 122 | |
---|
| 123 | virtual Value _getPrimal(int i) const; |
---|
| 124 | virtual Value _getDual(int i) const; |
---|
| 125 | |
---|
| 126 | virtual Value _getPrimalValue() const; |
---|
| 127 | |
---|
| 128 | virtual Value _getPrimalRay(int i) const; |
---|
| 129 | virtual Value _getDualRay(int i) const; |
---|
| 130 | |
---|
| 131 | virtual VarStatus _getColStatus(int i) const; |
---|
| 132 | virtual VarStatus _getRowStatus(int i) const; |
---|
| 133 | |
---|
| 134 | virtual ProblemType _getPrimalType() const; |
---|
| 135 | virtual ProblemType _getDualType() const; |
---|
| 136 | |
---|
| 137 | virtual void _clear(); |
---|
| 138 | |
---|
[568] | 139 | virtual void _messageLevel(MessageLevel); |
---|
| 140 | |
---|
[461] | 141 | public: |
---|
| 142 | |
---|
| 143 | ///Solves LP with primal simplex method. |
---|
| 144 | SolveExitStatus solvePrimal(); |
---|
| 145 | |
---|
| 146 | ///Solves LP with dual simplex method. |
---|
| 147 | SolveExitStatus solveDual(); |
---|
| 148 | |
---|
| 149 | ///Solves LP with barrier method. |
---|
| 150 | SolveExitStatus solveBarrier(); |
---|
| 151 | |
---|
| 152 | ///Returns the constraint identifier understood by CLP. |
---|
| 153 | int clpRow(Row r) const { return rows(id(r)); } |
---|
| 154 | |
---|
| 155 | ///Returns the variable identifier understood by CLP. |
---|
| 156 | int clpCol(Col c) const { return cols(id(c)); } |
---|
| 157 | |
---|
| 158 | }; |
---|
| 159 | |
---|
| 160 | } //END OF NAMESPACE LEMON |
---|
| 161 | |
---|
| 162 | #endif //LEMON_CLP_H |
---|
| 163 | |
---|