Clp 1.17.5
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ClpDummyMatrix.hpp
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1/* $Id: ClpDummyMatrix.hpp 2385 2019-01-06 19:43:06Z unxusr $ */
2// Copyright (C) 2003, International Business Machines
3// Corporation and others. All Rights Reserved.
4// This code is licensed under the terms of the Eclipse Public License (EPL).
5
6#ifndef ClpDummyMatrix_H
7#define ClpDummyMatrix_H
8
9#include "CoinPragma.hpp"
10
11#include "ClpMatrixBase.hpp"
12
19
20public:
24 virtual CoinPackedMatrix *getPackedMatrix() const;
26 virtual bool isColOrdered() const
27 {
28 return true;
29 }
31 virtual CoinBigIndex getNumElements() const
32 {
33 return numberElements_;
34 }
36 virtual int getNumCols() const
37 {
38 return numberColumns_;
39 }
41 virtual int getNumRows() const
42 {
43 return numberRows_;
44 }
45
50 virtual const double *getElements() const;
56 virtual const int *getIndices() const;
57
58 virtual const CoinBigIndex *getVectorStarts() const;
60 virtual const int *getVectorLengths() const;
61
63 virtual void deleteCols(const int numDel, const int *indDel);
65 virtual void deleteRows(const int numDel, const int *indDel);
69 virtual int countBasis(const int *whichColumn,
70 int &numberColumnBasic);
72 virtual void fillBasis(ClpSimplex *model,
73 const int *whichColumn,
74 int &numberColumnBasic,
75 int *row, int *start,
76 int *rowCount, int *columnCount,
77 CoinFactorizationDouble *element);
80 virtual void unpack(const ClpSimplex *model, CoinIndexedVector *rowArray,
81 int column) const;
86 virtual void unpackPacked(ClpSimplex *model,
87 CoinIndexedVector *rowArray,
88 int column) const;
91 virtual void add(const ClpSimplex *model, CoinIndexedVector *rowArray,
92 int column, double multiplier) const;
94 virtual void add(const ClpSimplex *model, double *array,
95 int column, double multiplier) const;
98 virtual void releasePackedMatrix() const {}
100
106 virtual void times(double scalar,
107 const double *x, double *y) const;
109 virtual void times(double scalar,
110 const double *x, double *y,
111 const double *rowScale,
112 const double *columnScale) const;
116 virtual void transposeTimes(double scalar,
117 const double *x, double *y) const;
119 virtual void transposeTimes(double scalar,
120 const double *x, double *y,
121 const double *rowScale,
122 const double *columnScale) const;
123
128 virtual void transposeTimes(const ClpSimplex *model, double scalar,
129 const CoinIndexedVector *x,
130 CoinIndexedVector *y,
131 CoinIndexedVector *z) const;
136 virtual void subsetTransposeTimes(const ClpSimplex *model,
137 const CoinIndexedVector *x,
138 const CoinIndexedVector *y,
139 CoinIndexedVector *z) const;
141
145
151 ClpDummyMatrix(int numberColumns, int numberRows,
152 int numberElements);
156
162 ClpDummyMatrix(const CoinPackedMatrix &);
163
166 virtual ClpMatrixBase *clone() const;
168
169protected:
179
181};
182
183#endif
184
185/* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
186*/
This implements a dummy matrix as derived from ClpMatrixBase.
virtual void transposeTimes(const ClpSimplex *model, double scalar, const CoinIndexedVector *x, CoinIndexedVector *y, CoinIndexedVector *z) const
Return x * scalar * A + y in z.
int numberRows_
Number of rows.
virtual void add(const ClpSimplex *model, double *array, int column, double multiplier) const
Adds multiple of a column into an array.
virtual bool isColOrdered() const
Whether the packed matrix is column major ordered or not.
virtual void unpack(const ClpSimplex *model, CoinIndexedVector *rowArray, int column) const
Unpacks a column into an CoinIndexedvector.
virtual ClpMatrixBase * clone() const
Clone.
ClpDummyMatrix(int numberColumns, int numberRows, int numberElements)
Constructor with data.
int numberElements_
Number of elements.
virtual int getNumRows() const
Number of rows.
ClpDummyMatrix()
Default constructor.
virtual void fillBasis(ClpSimplex *model, const int *whichColumn, int &numberColumnBasic, int *row, int *start, int *rowCount, int *columnCount, CoinFactorizationDouble *element)
Fills in column part of basis.
ClpDummyMatrix(const CoinPackedMatrix &)
The copy constructor from an CoinDummyMatrix.
virtual void releasePackedMatrix() const
Allow any parts of a created CoinMatrix to be deleted Allow any parts of a created CoinPackedMatrix t...
int numberColumns_
Number of columns.
virtual void add(const ClpSimplex *model, CoinIndexedVector *rowArray, int column, double multiplier) const
Adds multiple of a column into an CoinIndexedvector You can use quickAdd to add to vector.
virtual CoinPackedMatrix * getPackedMatrix() const
Return a complete CoinPackedMatrix.
virtual CoinBigIndex getNumElements() const
Number of entries in the packed matrix.
virtual const int * getIndices() const
A vector containing the minor indices of the elements in the packed matrix.
virtual ~ClpDummyMatrix()
Destructor.
virtual void times(double scalar, const double *x, double *y) const
Return y + A * scalar *x in y.
virtual void transposeTimes(double scalar, const double *x, double *y) const
Return y + x * scalar * A in y.
ClpDummyMatrix(const ClpDummyMatrix &)
The copy constructor.
virtual void transposeTimes(double scalar, const double *x, double *y, const double *rowScale, const double *columnScale) const
And for scaling.
virtual int countBasis(const int *whichColumn, int &numberColumnBasic)
Returns number of elements in column part of basis.
virtual const double * getElements() const
A vector containing the elements in the packed matrix.
virtual const int * getVectorLengths() const
The lengths of the major-dimension vectors.
virtual void deleteCols(const int numDel, const int *indDel)
Delete the columns whose indices are listed in indDel.
virtual ClpMatrixBase * reverseOrderedCopy() const
Returns a new matrix in reverse order without gaps.
virtual void times(double scalar, const double *x, double *y, const double *rowScale, const double *columnScale) const
And for scaling.
virtual void unpackPacked(ClpSimplex *model, CoinIndexedVector *rowArray, int column) const
Unpacks a column into an CoinIndexedvector in packed foramt Note that model is NOT const.
virtual void subsetTransposeTimes(const ClpSimplex *model, const CoinIndexedVector *x, const CoinIndexedVector *y, CoinIndexedVector *z) const
Return x *A in z but just for indices in y.
virtual const CoinBigIndex * getVectorStarts() const
ClpDummyMatrix & operator=(const ClpDummyMatrix &)
virtual int getNumCols() const
Number of columns.
virtual void deleteRows(const int numDel, const int *indDel)
Delete the rows whose indices are listed in indDel.
Abstract base class for Clp Matrices.
virtual void transposeTimes(double scalar, const double *COIN_RESTRICT x, double *COIN_RESTRICT y) const =0
Return y + x * scalar * A in y.
This solves LPs using the simplex method.