lemon-main: lemon/clp.h@1f1328691a07

     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();

    79     virtual void _eraseCol(int i);

    80     virtual void _eraseRow(int i);

    82     virtual void _eraseColId(int i);

    83     virtual void _eraseRowId(int i);

    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;

    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;

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

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

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

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

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

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

   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;

   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;

   112     virtual void _setObjCoeffs(ExprIterator, ExprIterator);

   113     virtual void _getObjCoeffs(InsertIterator) const;

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

   116     virtual Value _getObjCoeff(int i) const;

   118     virtual void _setSense(Sense sense);

   119     virtual Sense _getSense() const;

   121     virtual SolveExitStatus _solve();

   123     virtual Value _getPrimal(int i) const;

   124     virtual Value _getDual(int i) const;

   126     virtual Value _getPrimalValue() const;

   128     virtual Value _getPrimalRay(int i) const;

   129     virtual Value _getDualRay(int i) const;

   131     virtual VarStatus _getColStatus(int i) const;

   132     virtual VarStatus _getRowStatus(int i) const;

   134     virtual ProblemType _getPrimalType() const;

   135     virtual ProblemType _getDualType() const;

   137     virtual void _clear();

   139     virtual void _messageLevel(MessageLevel);

   141   public:

   143     ///Solves LP with primal simplex method.

   144     SolveExitStatus solvePrimal();

   146     ///Solves LP with dual simplex method.

   147     SolveExitStatus solveDual();

   149     ///Solves LP with barrier method.

   150     SolveExitStatus solveBarrier();

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

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

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

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

   158   };

   160 } //END OF NAMESPACE LEMON

   162 #endif //LEMON_CLP_H

author	Alpar Juttner <alpar@cs.elte.hu>
	Fri, 15 Apr 2011 09:40:17 +0200
changeset 946	1f1328691a07
parent 540	9db62975c32b
child 746	e4554cd6b2bf
permissions	-rw-r--r--