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# /home/coin/svn-release/Alps-1.4.8/Clp/src/ClpConstraint.hpp

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    00001 /* $Id: ClpConstraint.hpp 1665 2011-01-04 17:55:54Z lou $ */
    00002 // Copyright (C) 2007, International Business Machines
    00003 // Corporation and others.  All Rights Reserved.
    00004 // This code is licensed under the terms of the Eclipse Public License (EPL).
    00005
    00006 #ifndef ClpConstraint_H
    00007 #define ClpConstraint_H
    00008
    00009
    00010 //#############################################################################
    00011 class ClpSimplex;
    00012 class ClpModel;
    00013
    00019 class ClpConstraint  {
    00020
    00021 public:
    00022
    00024
    00025
    00032      virtual int gradient(const ClpSimplex * model,
    00033                           const double * solution,
    00034                           double * gradient,
    00035                           double & functionValue ,
    00036                           double & offset,
    00037                           bool useScaling = false,
    00038                           bool refresh = true) const = 0;
    00040      virtual double functionValue (const ClpSimplex * model,
    00041                                    const double * solution,
    00042                                    bool useScaling = false,
    00043                                    bool refresh = true) const ;
    00045      virtual void resize(int newNumberColumns) = 0;
    00047      virtual void deleteSome(int numberToDelete, const int * which) = 0;
    00049      virtual void reallyScale(const double * columnScale) = 0;
    00053      virtual int markNonlinear(char * which) const = 0;
    00057      virtual int markNonzero(char * which) const = 0;
    00059
    00060
    00062
    00063
    00064      ClpConstraint();
    00065
    00067      ClpConstraint(const ClpConstraint &);
    00068
    00070      ClpConstraint & operator=(const ClpConstraint& rhs);
    00071
    00073      virtual ~ClpConstraint ();
    00074
    00076      virtual ClpConstraint * clone() const = 0;
    00077
    00079
    00081
    00082
    00083      inline int type() {
    00084           return type_;
    00085      }
    00087      inline int rowNumber() const {
    00088           return rowNumber_;
    00089      }
    00090
    00092      virtual int numberCoefficients() const = 0;
    00093
    00095      inline double functionValue () const {
    00096           return functionValue_;
    00097      }
    00098
    00100      inline double offset () const {
    00101           return offset_;
    00102      }
    00104      virtual void newXValues() {}
    00106
    00107      //---------------------------------------------------------------------------
    00108
    00109 protected:
    00111
    00112
    00113      mutable double * lastGradient_;
    00115      mutable double functionValue_;
    00117      mutable double offset_;
    00119      int type_;
    00121      int rowNumber_;
    00123 };
    00124
    00125 #endif