source: trunk/Cbc/src/ClpConstraintAmpl.hpp @ 1424

Last change on this file since 1424 was 1286, checked in by EdwinStraver, 10 years ago

Changed formatting using AStyle -A4 -p

File size: 2.9 KB
Line 
1/* $Id: ClpConstraintAmpl.hpp 1173 2009-06-04 09:44:10Z forrest $ */
2// Copyright (C) 2007, International Business Machines
3// Corporation and others.  All Rights Reserved.
4#ifndef ClpConstraintAmpl_H
5#define ClpConstraintAmpl_H
6
7#include "ClpConstraint.hpp"
8
9//#############################################################################
10
11/** Ampl Constraint Class
12
13*/
14
15class ClpConstraintAmpl : public ClpConstraint {
16
17public:
18
19    ///@name Stuff
20    //@{
21
22
23    /** Fills gradient.  If Ampl then solution may be NULL,
24        also returns true value of function and offset so we can use x not deltaX in constraint
25        If refresh is false then uses last solution
26        Uses model for scaling
27        Returns non-zero if gradient udefined at current solution
28    */
29    virtual int gradient(const ClpSimplex * model,
30                         const double * solution,
31                         double * gradient,
32                         double & functionValue ,
33                         double & offset,
34                         bool useScaling = false,
35                         bool refresh = true) const ;
36    /// Resize constraint
37    virtual void resize(int newNumberColumns) ;
38    /// Delete columns in  constraint
39    virtual void deleteSome(int numberToDelete, const int * which) ;
40    /// Scale constraint
41    virtual void reallyScale(const double * columnScale) ;
42    /** Given a zeroed array sets nonampl columns to 1.
43        Returns number of nonampl columns
44     */
45    virtual int markNonlinear(char * which) const ;
46    /** Given a zeroed array sets possible nonzero coefficients to 1.
47        Returns number of nonzeros
48     */
49    virtual int markNonzero(char * which) const;
50    /// Say we have new primal solution - so may need to recompute
51    virtual void newXValues() ;
52    //@}
53
54
55    ///@name Constructors and destructors
56    //@{
57    /// Default Constructor
58    ClpConstraintAmpl();
59
60    /// Constructor from ampl
61    ClpConstraintAmpl(int row, void * amplInfo);
62
63    /** Copy constructor .
64    */
65    ClpConstraintAmpl(const ClpConstraintAmpl & rhs);
66
67    /// Assignment operator
68    ClpConstraintAmpl & operator=(const ClpConstraintAmpl& rhs);
69
70    /// Destructor
71    virtual ~ClpConstraintAmpl ();
72
73    /// Clone
74    virtual ClpConstraint * clone() const;
75    //@}
76    ///@name Gets and sets
77    //@{
78    /// Number of coefficients
79    virtual int numberCoefficients() const;
80    /// Columns
81    inline const int * column() const {
82        return column_;
83    }
84    /// Coefficients
85    inline const double * coefficient() const {
86        return coefficient_;
87    }
88    //@}
89
90    //---------------------------------------------------------------------------
91
92private:
93    ///@name Private member data
94    /// Ampl info
95    void * amplInfo_;
96    /// Column
97    int * column_;
98    /// Coefficients
99    double * coefficient_;
100    /// Number of coefficients in gradient
101    int numberCoefficients_;
102    //@}
103};
104
105#endif
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