lemon-main: lemon/clp.h@e77b621e6e7e

     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  */

    19 #ifndef LEMON_CLP_H

    20 #define LEMON_CLP_H

    22 ///\file

    23 ///\brief Header of the LEMON-CLP lp solver interface.

    25 #include <vector>

    26 #include <string>

    28 #include <lemon/lp_base.h>

    30 class ClpSimplex;

    32 namespace lemon {

    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.

    42   class ClpLp : public LpSolver {

    43   protected:

    45     ClpSimplex* _prob;

    47     std::map<std::string, int> _col_names_ref;

    48     std::map<std::string, int> _row_names_ref;

    50   public:

    52     /// \e

    53     ClpLp();

    54     /// \e

    55     ClpLp(const ClpLp&);

    56     /// \e

    57     ~ClpLp();

    59     /// \e

    60     virtual ClpLp* newSolver() const;

    61     /// \e

    62     virtual ClpLp* cloneSolver() const;

    64   protected:

    66     mutable double* _primal_ray;

    67     mutable double* _dual_ray;

    69     void _init_temporals();

    70     void _clear_temporals();

    72   protected:

    74     virtual const char* _solverName() const;

    76     virtual int _addCol();

    77     virtual int _addRow();

    78     virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u);

    80     virtual void _eraseCol(int i);

    81     virtual void _eraseRow(int i);

    83     virtual void _eraseColId(int i);

    84     virtual void _eraseRowId(int i);

    86     virtual void _getColName(int col, std::string& name) const;

    87     virtual void _setColName(int col, const std::string& name);

    88     virtual int _colByName(const std::string& name) const;

    90     virtual void _getRowName(int row, std::string& name) const;

    91     virtual void _setRowName(int row, const std::string& name);

    92     virtual int _rowByName(const std::string& name) const;

    94     virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e);

    95     virtual void _getRowCoeffs(int i, InsertIterator b) const;

    97     virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e);

    98     virtual void _getColCoeffs(int i, InsertIterator b) const;

   100     virtual void _setCoeff(int row, int col, Value value);

   101     virtual Value _getCoeff(int row, int col) const;

   103     virtual void _setColLowerBound(int i, Value value);

   104     virtual Value _getColLowerBound(int i) const;

   105     virtual void _setColUpperBound(int i, Value value);

   106     virtual Value _getColUpperBound(int i) const;

   108     virtual void _setRowLowerBound(int i, Value value);

   109     virtual Value _getRowLowerBound(int i) const;

   110     virtual void _setRowUpperBound(int i, Value value);

   111     virtual Value _getRowUpperBound(int i) const;

   113     virtual void _setObjCoeffs(ExprIterator, ExprIterator);

   114     virtual void _getObjCoeffs(InsertIterator) const;

   116     virtual void _setObjCoeff(int i, Value obj_coef);

   117     virtual Value _getObjCoeff(int i) const;

   119     virtual void _setSense(Sense sense);

   120     virtual Sense _getSense() const;

   122     virtual SolveExitStatus _solve();

   124     virtual Value _getPrimal(int i) const;

   125     virtual Value _getDual(int i) const;

   127     virtual Value _getPrimalValue() const;

   129     virtual Value _getPrimalRay(int i) const;

   130     virtual Value _getDualRay(int i) const;

   132     virtual VarStatus _getColStatus(int i) const;

   133     virtual VarStatus _getRowStatus(int i) const;

   135     virtual ProblemType _getPrimalType() const;

   136     virtual ProblemType _getDualType() const;

   138     virtual void _clear();

   140     virtual void _messageLevel(MessageLevel);

   142   public:

   144     ///Solves LP with primal simplex method.

   145     SolveExitStatus solvePrimal();

   147     ///Solves LP with dual simplex method.

   148     SolveExitStatus solveDual();

   150     ///Solves LP with barrier method.

   151     SolveExitStatus solveBarrier();

   153     ///Returns the constraint identifier understood by CLP.

   154     int clpRow(Row r) const { return rows(id(r)); }

   156     ///Returns the variable identifier understood by CLP.

   157     int clpCol(Col c) const { return cols(id(c)); }

   159   };

   161 } //END OF NAMESPACE LEMON

   163 #endif //LEMON_CLP_H

author	Alpar Juttner <alpar@cs.elte.hu>
	Mon, 01 Mar 2010 07:51:45 +0100
changeset 850	e77b621e6e7e
parent 576	745e182d0139
child 877	141f9c0db4a3
permissions	-rw-r--r--