diff -r d8475431bbbb -r 8e85e6bbefdf lemon/lp_glpk.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lemon/lp_glpk.h Mon May 23 04:48:14 2005 +0000 @@ -0,0 +1,114 @@ +/* -*- C++ -*- + * lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library + * + * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport + * (Egervary Research Group on Combinatorial Optimization, EGRES). + * + * Permission to use, modify and distribute this software is granted + * provided that this copyright notice appears in all copies. For + * precise terms see the accompanying LICENSE file. + * + * This software is provided "AS IS" with no warranty of any kind, + * express or implied, and with no claim as to its suitability for any + * purpose. + * + */ + +#ifndef LEMON_LP_GLPK_H +#define LEMON_LP_GLPK_H + +///\file +///\brief Header of the LEMON-GLPK lp solver interface. +///\ingroup gen_opt_group + +#include +extern "C" { +#include +} + +namespace lemon { + + + /// \brief Interface for the GLPK LP solver + /// + /// This class implements an interface for the GLPK LP solver. + ///\ingroup gen_opt_group + class LpGlpk : public LpSolverBase { + protected: + LPX* lp; + + public: + + typedef LpSolverBase Parent; + + LpGlpk(); + ~LpGlpk(); + + protected: + virtual LpSolverBase &_newLp(); + virtual LpSolverBase &_copyLp(); + + virtual int _addCol(); + virtual int _addRow(); + virtual void _eraseCol(int i); + virtual void _eraseRow(int i); + + virtual void _setRowCoeffs(int i, + int length, + const int * indices, + const Value * values ); + virtual void _setColCoeffs(int i, + int length, + const int * indices, + const Value * values); + virtual void _setCoeff(int row, int col, Value value); + virtual void _setColLowerBound(int i, Value value); + virtual void _setColUpperBound(int i, Value value); +// virtual void _setRowLowerBound(int i, Value value); +// virtual void _setRowUpperBound(int i, Value value); + virtual void _setRowBounds(int i, Value lower, Value upper); + virtual void _setObjCoeff(int i, Value obj_coef); + virtual void _clearObj(); +// virtual void _setObj(int length, +// int const * indices, +// Value const * values ) = 0; + + ///\e + + ///\todo It should be clarified + /// + virtual SolveExitStatus _solve(); + virtual Value _getPrimal(int i); + virtual Value _getPrimalValue(); + ///\e + + ///\todo It should be clarified + /// + virtual SolutionStatus _getPrimalStatus(); + virtual void _setMax(); + virtual void _setMin(); + + public: + ///Set the verbosity of the messages + + ///Set the verbosity of the messages + /// + ///\param m is the level of the messages output by the solver routines. + ///The possible values are: + ///- 0 --- no output (default value) + ///- 1 --- error messages only + ///- 2 --- normal output + ///- 3 --- full output (includes informational messages) + void messageLevel(int m); + ///Turns on or off the presolver + + ///Turns on (\c b is \c true) or off (\c b is \c false) the presolver + /// + ///The presolver is off by default. + void presolver(bool b); + + }; +} //END OF NAMESPACE LEMON + +#endif //LEMON_LP_GLPK_H +