Clp 1.17.5
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ClpNetworkMatrix.hpp
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1/* $Id: ClpNetworkMatrix.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 ClpNetworkMatrix_H
7#define ClpNetworkMatrix_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 2 * numberColumns_;
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 return indices_;
59 }
60
61 virtual const CoinBigIndex *getVectorStarts() const;
63 virtual const int *getVectorLengths() const;
64
66 virtual void deleteCols(const int numDel, const int *indDel);
68 virtual void deleteRows(const int numDel, const int *indDel);
70 virtual void appendCols(int number, const CoinPackedVectorBase *const *columns);
72 virtual void appendRows(int number, const CoinPackedVectorBase *const *rows);
73#ifndef SLIM_CLP
78 virtual int appendMatrix(int number, int type,
79 const CoinBigIndex *starts, const int *index,
80 const double *element, int numberOther = -1);
81#endif
85 virtual int countBasis(
86 const int *whichColumn,
87 int &numberColumnBasic);
89 virtual void fillBasis(ClpSimplex *model,
90 const int *whichColumn,
91 int &numberColumnBasic,
92 int *row, int *start,
93 int *rowCount, int *columnCount,
94 CoinFactorizationDouble *element);
99 virtual CoinBigIndex *dubiousWeights(const ClpSimplex *model, int *inputWeights) const;
103 virtual void rangeOfElements(double &smallestNegative, double &largestNegative,
104 double &smallestPositive, double &largestPositive);
107 virtual void unpack(const ClpSimplex *model, CoinIndexedVector *rowArray,
108 int column) const;
113 virtual void unpackPacked(ClpSimplex *model,
114 CoinIndexedVector *rowArray,
115 int column) const;
118 virtual void add(const ClpSimplex *model, CoinIndexedVector *rowArray,
119 int column, double multiplier) const;
121 virtual void add(const ClpSimplex *model, double *array,
122 int column, double multiplier) const;
124 virtual void releasePackedMatrix() const;
126 virtual bool canDoPartialPricing() const;
128 virtual void partialPricing(ClpSimplex *model, double start, double end,
129 int &bestSequence, int &numberWanted);
131
137 virtual void times(double scalar,
138 const double *x, double *y) const;
140 virtual void times(double scalar,
141 const double *x, double *y,
142 const double *rowScale,
143 const double *columnScale) const;
147 virtual void transposeTimes(double scalar,
148 const double *x, double *y) const;
150 virtual void transposeTimes(double scalar,
151 const double *x, double *y,
152 const double *rowScale,
153 const double *columnScale, double *spare = NULL) const;
158 virtual void transposeTimes(const ClpSimplex *model, double scalar,
159 const CoinIndexedVector *x,
160 CoinIndexedVector *y,
161 CoinIndexedVector *z) const;
165 virtual void subsetTransposeTimes(const ClpSimplex *model,
166 const CoinIndexedVector *x,
167 const CoinIndexedVector *y,
168 CoinIndexedVector *z) const;
170
174 inline bool trueNetwork() const
175 {
176 return trueNetwork_;
177 }
179
185 ClpNetworkMatrix(int numberColumns, const int *head,
186 const int *tail);
190
196 ClpNetworkMatrix(const CoinPackedMatrix &);
197
200 virtual ClpMatrixBase *clone() const;
204 int numberRows, const int *whichRows,
205 int numberColumns, const int *whichColumns);
209 int numberRows, const int *whichRows,
210 int numberColumns, const int *whichColumns) const;
212
213protected:
218 mutable CoinPackedMatrix *matrix_;
219 mutable int *lengths_;
228
230};
231
232#endif
233
234/* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
235*/
Abstract base class for Clp Matrices.
int type() const
Returns type.
This implements a simple network matrix as derived from ClpMatrixBase.
int * indices_
Data -1, then +1 rows in pairs (row==-1 if one entry)
virtual CoinPackedMatrix * getPackedMatrix() const
Return a complete CoinPackedMatrix.
bool trueNetwork_
True if all entries have two elements.
int numberRows_
Number of rows.
virtual void deleteCols(const int numDel, const int *indDel)
Delete the columns whose indices are listed in indDel.
virtual ClpMatrixBase * clone() const
Clone.
virtual void appendCols(int number, const CoinPackedVectorBase *const *columns)
Append Columns.
ClpNetworkMatrix & operator=(const ClpNetworkMatrix &)
virtual void unpackPacked(ClpSimplex *model, CoinIndexedVector *rowArray, int column) const
Unpacks a column into an CoinIndexedvector in packed format Note that model is NOT const.
bool trueNetwork() const
Return true if really network, false if has slacks.
ClpNetworkMatrix()
Default constructor.
virtual void rangeOfElements(double &smallestNegative, double &largestNegative, double &smallestPositive, double &largestPositive)
Returns largest and smallest elements of both signs.
virtual bool isColOrdered() const
Whether the packed matrix is column major ordered or not.
virtual bool canDoPartialPricing() const
Says whether it can do partial pricing.
virtual void add(const ClpSimplex *model, double *array, int column, double multiplier) const
Adds multiple of a column into an array.
ClpNetworkMatrix(const ClpNetworkMatrix &wholeModel, int numberRows, const int *whichRows, int numberColumns, const int *whichColumns)
Subset constructor (without gaps).
virtual ClpMatrixBase * subsetClone(int numberRows, const int *whichRows, int numberColumns, const int *whichColumns) const
Subset clone (without gaps).
virtual void transposeTimes(double scalar, const double *x, double *y) const
Return y + x * scalar * A in y.
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.
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 const double * getElements() const
A vector containing the elements in the packed matrix.
virtual const CoinBigIndex * getVectorStarts() const
virtual void releasePackedMatrix() const
Allow any parts of a created CoinMatrix to be deleted.
virtual ~ClpNetworkMatrix()
Destructor.
ClpNetworkMatrix(const ClpNetworkMatrix &)
The copy constructor.
virtual void partialPricing(ClpSimplex *model, double start, double end, int &bestSequence, int &numberWanted)
Partial pricing.
virtual void unpack(const ClpSimplex *model, CoinIndexedVector *rowArray, int column) const
Unpacks a column into an CoinIndexedvector.
virtual int countBasis(const int *whichColumn, int &numberColumnBasic)
Returns number of elements in column part of basis.
virtual ClpMatrixBase * reverseOrderedCopy() const
Returns a new matrix in reverse order without gaps.
virtual int getNumCols() const
Number of columns.
virtual int getNumRows() const
Number of rows.
virtual void appendRows(int number, const CoinPackedVectorBase *const *rows)
Append Rows.
virtual const int * getIndices() const
A vector containing the minor indices of the elements in the packed matrix.
ClpNetworkMatrix(int numberColumns, const int *head, const int *tail)
Constructor from two arrays.
virtual void times(double scalar, const double *x, double *y, const double *rowScale, const double *columnScale) const
And for scaling.
virtual CoinBigIndex getNumElements() const
Number of entries in the packed matrix.
virtual void deleteRows(const int numDel, const int *indDel)
Delete the rows whose indices are listed in indDel.
virtual void times(double scalar, const double *x, double *y) const
Return y + A * scalar *x in y.
virtual int appendMatrix(int number, int type, const CoinBigIndex *starts, const int *index, const double *element, int numberOther=-1)
Append a set of rows/columns to the end of the matrix.
virtual const int * getVectorLengths() const
The lengths of the major-dimension vectors.
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.
CoinPackedMatrix * matrix_
For fake CoinPackedMatrix.
ClpNetworkMatrix(const CoinPackedMatrix &)
The copy constructor from an CoinNetworkMatrix.
virtual void transposeTimes(double scalar, const double *x, double *y, const double *rowScale, const double *columnScale, double *spare=NULL) const
And for scaling.
virtual CoinBigIndex * dubiousWeights(const ClpSimplex *model, int *inputWeights) const
Given positive integer weights for each row fills in sum of weights for each column (and slack).
virtual void transposeTimes(const ClpSimplex *model, double scalar, const CoinIndexedVector *x, CoinIndexedVector *y, CoinIndexedVector *z) const
Return x * scalar * A + y in z.
int numberColumns_
Number of columns.
This solves LPs using the simplex method.