ClpPackedMatrix Class Reference

#include <ClpPackedMatrix.hpp>

Inheritance diagram for ClpPackedMatrix:

Collaboration diagram for ClpPackedMatrix:

Public Member Functions
Useful methods

virtual CoinPackedMatrix *	getPackedMatrix () const
	Return a complete CoinPackedMatrix.
virtual bool	isColOrdered () const
	Whether the packed matrix is column major ordered or not.
virtual CoinBigIndex	getNumElements () const
	Number of entries in the packed matrix.
virtual int	getNumCols () const
	Number of columns.
virtual int	getNumRows () const
	Number of rows.
virtual const double *	getElements () const
	A vector containing the elements in the packed matrix.
double *	getMutableElements () const
	Mutable elements.
virtual const int *	getIndices () const
	A vector containing the minor indices of the elements in the packed matrix.
virtual const CoinBigIndex *	getVectorStarts () const
	Return a complete CoinPackedMatrix.
virtual const int *	getVectorLengths () const
	The lengths of the major-dimension vectors.
virtual int	getVectorLength (int index) const
	The length of a single major-dimension vector.
virtual void	deleteCols (const int numDel, const int *indDel)
	Delete the columns whose indices are listed in `indDel`.
virtual void	deleteRows (const int numDel, const int *indDel)
	Delete the rows whose indices are listed in `indDel`.
virtual void	appendCols (int number, const CoinPackedVectorBase const columns)
	Append Columns.
virtual void	appendRows (int number, const CoinPackedVectorBase const rows)
	Append Rows.
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 void	replaceVector (const int index, const int numReplace, const double *newElements)
	Replace the elements of a vector.
virtual void	modifyCoefficient (int row, int column, double newElement, bool keepZero=false)
	Modify one element of packed matrix.
virtual ClpMatrixBase *	reverseOrderedCopy () const
	Returns a new matrix in reverse order without gaps.
virtual CoinBigIndex	countBasis (ClpSimplex model, const int whichColumn, int numberRowBasic, int &numberColumnBasic)
	Returns number of elements in column part of basis.
virtual void	fillBasis (ClpSimplex model, const int whichColumn, int &numberColumnBasic, int row, int start, int rowCount, int columnCount, double *element)
	Fills in column part of basis.
virtual int	scale (ClpModel model, const ClpSimplex baseModel=NULL) const
	Creates scales for column copy (rowCopy in model may be modified) returns non-zero if no scaling done.
virtual void	scaleRowCopy (ClpModel *model) const
	Scales rowCopy if column copy scaled Only called if scales already exist.
void	createScaledMatrix (ClpSimplex *model) const
	Creates scaled column copy if scales exist.
virtual ClpMatrixBase *	scaledColumnCopy (ClpModel *model) const
	Realy really scales column copy Only called if scales already exist.
virtual bool	allElementsInRange (ClpModel *model, double smallest, double largest, int check=15)
	Checks if all elements are in valid range.
virtual void	rangeOfElements (double &smallestNegative, double &largestNegative, double &smallestPositive, double &largestPositive)
	Returns largest and smallest elements of both signs.
virtual void	unpack (const ClpSimplex model, CoinIndexedVector rowArray, int column) const
	Unpacks a column into an CoinIndexedvector.
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	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 void	add (const ClpSimplex model, double array, int column, double multiplier) const
	Adds multiple of a column into an array.
virtual void	releasePackedMatrix () const
	Allow any parts of a created CoinPackedMatrix to be deleted.
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 bool	canDoPartialPricing () const
	Says whether it can do partial pricing.
virtual void	partialPricing (ClpSimplex *model, double start, double end, int &bestSequence, int &numberWanted)
	Partial pricing.
virtual int	refresh (ClpSimplex *model)
	makes sure active columns correct
virtual void	reallyScale (const double rowScale, const double columnScale)
	Return a complete CoinPackedMatrix.
virtual void	setDimensions (int numrows, int numcols)
	Set the dimensions of the matrix.
Matrix times vector methods

virtual void	times (double scalar, const double x, double y) const
	Return `y + A * scalar *x` in `y`.
virtual void	times (double scalar, const double x, double y, const double rowScale, const double columnScale) const
	And for scaling.
virtual void	transposeTimes (double scalar, const double x, double y) const
	Return `y + x * scalar * A` in `y`.
virtual void	transposeTimes (double scalar, const double x, double y, const double rowScale, const double columnScale, double *spare=NULL) const
	And for scaling.
virtual void	transposeTimes (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`.
void	transposeTimesByColumn (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`.
virtual void	transposeTimesByRow (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`.
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 bool	canCombine (const ClpSimplex model, const CoinIndexedVector pi) const
	Returns true if can combine transposeTimes and subsetTransposeTimes and if it would be faster.
virtual void	transposeTimes2 (const ClpSimplex model, const CoinIndexedVector pi1, CoinIndexedVector dj1, const CoinIndexedVector pi2, CoinIndexedVector dj2, CoinIndexedVector spare, double referenceIn, double devex, unsigned int reference, double weights, double scaleFactor)
	Updates two arrays for steepest.
virtual void	subsetTimes2 (const ClpSimplex model, CoinIndexedVector dj1, const CoinIndexedVector pi2, CoinIndexedVector dj2, double referenceIn, double devex, unsigned int reference, double weights, double scaleFactor)
	Updates second array for steepest and does devex weights.
void	useEffectiveRhs (ClpSimplex *model)
	Sets up an effective RHS.
Other

CoinPackedMatrix *	matrix () const
	Returns CoinPackedMatrix (non const).
void	setMatrixNull ()
	Just sets matrix_ to NULL so it can be used elsewhere.
void	makeSpecialColumnCopy ()
	Say we want special column copy.
void	releaseSpecialColumnCopy ()
	Say we don't want special column copy.
bool	zeros () const
	Are there zeros?
bool	wantsSpecialColumnCopy () const
	Do we want special column copy.
Constructors, destructor

	ClpPackedMatrix ()
	Default constructor.
virtual	~ClpPackedMatrix ()
	Destructor.
Copy method

	ClpPackedMatrix (const ClpPackedMatrix &)
	The copy constructor.
	ClpPackedMatrix (const CoinPackedMatrix &)
	The copy constructor from an CoinPackedMatrix.
	ClpPackedMatrix (const ClpPackedMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)
	Subset constructor (without gaps).
	ClpPackedMatrix (const CoinPackedMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)
	The copy constructor.
	ClpPackedMatrix (CoinPackedMatrix *matrix)
	This takes over ownership (for space reasons).
ClpPackedMatrix &	operator= (const ClpPackedMatrix &)
	The copy constructor.
virtual ClpMatrixBase *	clone () const
	Clone.
virtual void	copy (const ClpPackedMatrix *from)
	Copy contents - resizing if necessary - otherwise re-use memory.
virtual ClpMatrixBase *	subsetClone (int numberRows, const int whichRows, int numberColumns, const int whichColumns) const
	Subset clone (without gaps).
void	specialRowCopy (ClpSimplex model, const ClpMatrixBase rowCopy)
	make special row copy
void	specialColumnCopy (ClpSimplex *model)
	make special column copy
virtual void	correctSequence (const ClpSimplex *model, int &sequenceIn, int &sequenceOut)
	Correct sequence in and out to give true value.
Protected Member Functions
void	checkFlags () const
	Check validity.
Protected Attributes
Data members
The data members are protected to allow access for derived classes.
CoinPackedMatrix *	matrix_
	Data.
int	numberActiveColumns_
	number of active columns (normally same as number of columns)
int	flags_
	Flags - 1 - has zero elements 2 - has gaps 4 - has special row copy 8 - has special column copy.
ClpPackedMatrix2 *	rowCopy_
	Special row copy.
ClpPackedMatrix3 *	columnCopy_
	Special column copy.
Private Member Functions
void	gutsOfTransposeTimesUnscaled (const double pi, CoinIndexedVector output, const double tolerance) const
	Meat of transposeTimes by column when not scaled.
void	gutsOfTransposeTimesScaled (const double pi, const double columnScale, CoinIndexedVector *output, const double tolerance) const
	Meat of transposeTimes by column when scaled.
void	gutsOfTransposeTimesByRowGE3 (const CoinIndexedVector piVector, CoinIndexedVector output, CoinIndexedVector *spareVector, const double tolerance, const double scalar) const
	Meat of transposeTimes by row n > 2 if packed.
void	gutsOfTransposeTimesByRowEQ2 (const CoinIndexedVector piVector, CoinIndexedVector output, CoinIndexedVector *spareVector, const double tolerance, const double scalar) const
	Meat of transposeTimes by row n == 2 if packed.
void	gutsOfTransposeTimesByRowEQ1 (const CoinIndexedVector piVector, CoinIndexedVector output, const double tolerance, const double scalar) const
	Meat of transposeTimes by row n == 1 if packed.
void	clearCopies ()
	Gets rid of special copies.

Detailed Description

Definition at line 18 of file ClpPackedMatrix.hpp.

Constructor & Destructor Documentation

ClpPackedMatrix::ClpPackedMatrix ( )

Default constructor.

virtual ClpPackedMatrix::~ClpPackedMatrix ( ) [virtual]

Destructor.

ClpPackedMatrix::ClpPackedMatrix ( const ClpPackedMatrix & )

The copy constructor.

ClpPackedMatrix::ClpPackedMatrix ( const CoinPackedMatrix & )

The copy constructor from an CoinPackedMatrix.

ClpPackedMatrix::ClpPackedMatrix	(	const ClpPackedMatrix &	wholeModel,
		int	numberRows,
		const int *	whichRows,
		int	numberColumns,
		const int *	whichColumns
	)

Subset constructor (without gaps).

Duplicates are allowed and order is as given

ClpPackedMatrix::ClpPackedMatrix	(	const CoinPackedMatrix &	wholeModel,
		int	numberRows,
		const int *	whichRows,
		int	numberColumns,
		const int *	whichColumns
	)

The copy constructor.

ClpPackedMatrix::ClpPackedMatrix ( CoinPackedMatrix * matrix )

This takes over ownership (for space reasons).

Member Function Documentation

virtual CoinPackedMatrix* ClpPackedMatrix::getPackedMatrix ( ) const [inline, virtual]

Return a complete CoinPackedMatrix.

Implements ClpMatrixBase.

Definition at line 24 of file ClpPackedMatrix.hpp.

virtual bool ClpPackedMatrix::isColOrdered ( ) const [inline, virtual]

Whether the packed matrix is column major ordered or not.

Implements ClpMatrixBase.

Definition at line 26 of file ClpPackedMatrix.hpp.

virtual CoinBigIndex ClpPackedMatrix::getNumElements ( ) const [inline, virtual]

Number of entries in the packed matrix.

Implements ClpMatrixBase.

Definition at line 28 of file ClpPackedMatrix.hpp.

virtual int ClpPackedMatrix::getNumCols ( ) const [inline, virtual]

Number of columns.

Implements ClpMatrixBase.

Definition at line 31 of file ClpPackedMatrix.hpp.

virtual int ClpPackedMatrix::getNumRows ( ) const [inline, virtual]

Number of rows.

Implements ClpMatrixBase.

Definition at line 33 of file ClpPackedMatrix.hpp.

virtual const double* ClpPackedMatrix::getElements ( ) const [inline, virtual]

A vector containing the elements in the packed matrix.

Note that there might be gaps in this list, entries that do not belong to any major-dimension vector. To get the actual elements one should look at this vector together with vectorStarts and vectorLengths.

Implements ClpMatrixBase.

Definition at line 39 of file ClpPackedMatrix.hpp.

double* ClpPackedMatrix::getMutableElements ( ) const [inline]

Mutable elements.

Definition at line 42 of file ClpPackedMatrix.hpp.

virtual const int* ClpPackedMatrix::getIndices ( ) const [inline, virtual]

A vector containing the minor indices of the elements in the packed matrix.

Note that there might be gaps in this list, entries that do not belong to any major-dimension vector. To get the actual elements one should look at this vector together with vectorStarts and vectorLengths.

Implements ClpMatrixBase.

Definition at line 49 of file ClpPackedMatrix.hpp.

virtual const CoinBigIndex* ClpPackedMatrix::getVectorStarts ( ) const [inline, virtual]

Return a complete CoinPackedMatrix.

Implements ClpMatrixBase.

Definition at line 52 of file ClpPackedMatrix.hpp.

virtual const int* ClpPackedMatrix::getVectorLengths ( ) const [inline, virtual]

The lengths of the major-dimension vectors.

Implements ClpMatrixBase.

Definition at line 55 of file ClpPackedMatrix.hpp.

virtual int ClpPackedMatrix::getVectorLength ( int index ) const [inline, virtual]

The length of a single major-dimension vector.

Reimplemented from ClpMatrixBase.

Definition at line 58 of file ClpPackedMatrix.hpp.

virtual void ClpPackedMatrix::deleteCols	(	const int	numDel,
		const int *	indDel
	)			`[virtual]`

Delete the columns whose indices are listed in indDel.

Implements ClpMatrixBase.

virtual void ClpPackedMatrix::deleteRows	(	const int	numDel,
		const int *	indDel
	)			`[virtual]`

Delete the rows whose indices are listed in indDel.

Implements ClpMatrixBase.

virtual void ClpPackedMatrix::appendCols	(	int	number,
		const CoinPackedVectorBase const	columns
	)			`[virtual]`

Append Columns.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::appendRows	(	int	number,
		const CoinPackedVectorBase const	rows
	)			`[virtual]`

Append Rows.

Reimplemented from ClpMatrixBase.

virtual int ClpPackedMatrix::appendMatrix	(	int	number,
		int	type,
		const CoinBigIndex *	starts,
		const int *	index,
		const double *	element,
		int	numberOther = `-1`
	)			`[virtual]`

Append a set of rows/columns to the end of the matrix.

Returns number of errors i.e. if any of the new rows/columns contain an index that's larger than the number of columns-1/rows-1 (if numberOther>0) or duplicates If 0 then rows, 1 if columns

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::replaceVector	(	const int	index,
		const int	numReplace,
		const double *	newElements
	)			`[inline, virtual]`

Replace the elements of a vector.

The indices remain the same. This is only needed if scaling and a row copy is used. At most the number specified will be replaced. The index is between 0 and major dimension of matrix

Definition at line 82 of file ClpPackedMatrix.hpp.

virtual void ClpPackedMatrix::modifyCoefficient	(	int	row,
		int	column,
		double	newElement,
		bool	keepZero = `false`
	)			`[inline, virtual]`

Modify one element of packed matrix.

An element may be added. This works for either ordering If the new element is zero it will be deleted unless keepZero true

Reimplemented from ClpMatrixBase.

Definition at line 88 of file ClpPackedMatrix.hpp.

virtual ClpMatrixBase* ClpPackedMatrix::reverseOrderedCopy ( ) const [virtual]

Returns a new matrix in reverse order without gaps.

Reimplemented from ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual CoinBigIndex ClpPackedMatrix::countBasis	(	ClpSimplex *	model,
		const int *	whichColumn,
		int	numberRowBasic,
		int &	numberColumnBasic
	)			`[virtual]`

Returns number of elements in column part of basis.

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual void ClpPackedMatrix::fillBasis	(	ClpSimplex *	model,
		const int *	whichColumn,
		int &	numberColumnBasic,
		int *	row,
		int *	start,
		int *	rowCount,
		int *	columnCount,
		double *	element
	)			`[virtual]`

Fills in column part of basis.

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual int ClpPackedMatrix::scale	(	ClpModel *	model,
		const ClpSimplex *	baseModel = `NULL`
	)			const `[virtual]`

Creates scales for column copy (rowCopy in model may be modified) returns non-zero if no scaling done.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::scaleRowCopy ( ClpModel * model ) const [virtual]

Scales rowCopy if column copy scaled Only called if scales already exist.

Reimplemented from ClpMatrixBase.

void ClpPackedMatrix::createScaledMatrix ( ClpSimplex * model ) const

Creates scaled column copy if scales exist.

virtual ClpMatrixBase* ClpPackedMatrix::scaledColumnCopy ( ClpModel * model ) const [virtual]

Realy really scales column copy Only called if scales already exist.

Up to user ro delete

Reimplemented from ClpMatrixBase.

virtual bool ClpPackedMatrix::allElementsInRange	(	ClpModel *	model,
		double	smallest,
		double	largest,
		int	check = `15`
	)			`[virtual]`

Checks if all elements are in valid range.

Can just return true if you are not paranoid. For Clp I will probably expect no zeros. Code can modify matrix to get rid of small elements. check bits (can be turned off to save time) : 1 - check if matrix has gaps 2 - check if zero elements 4 - check and compress duplicates 8 - report on large and small

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::rangeOfElements	(	double &	smallestNegative,
		double &	largestNegative,
		double &	smallestPositive,
		double &	largestPositive
	)			`[virtual]`

Returns largest and smallest elements of both signs.

Largest refers to largest absolute value.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::unpack	(	const ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column
	)			const `[virtual]`

Unpacks a column into an CoinIndexedvector.

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual void ClpPackedMatrix::unpackPacked	(	ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column
	)			const `[virtual]`

Unpacks a column into an CoinIndexedvector in packed foramt Note that model is NOT const.

Bounds and objective could be modified if doing column generation (just for this variable)

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual void ClpPackedMatrix::add	(	const ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column,
		double	multiplier
	)			const `[virtual]`

Adds multiple of a column into an CoinIndexedvector You can use quickAdd to add to vector.

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual void ClpPackedMatrix::add	(	const ClpSimplex *	model,
		double *	array,
		int	column,
		double	multiplier
	)			const `[virtual]`

Adds multiple of a column into an array.

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual void ClpPackedMatrix::releasePackedMatrix ( ) const [inline, virtual]

Allow any parts of a created CoinPackedMatrix to be deleted.

Implements ClpMatrixBase.

Definition at line 155 of file ClpPackedMatrix.hpp.

virtual CoinBigIndex* ClpPackedMatrix::dubiousWeights	(	const ClpSimplex *	model,
		int *	inputWeights
	)			const `[virtual]`

Given positive integer weights for each row fills in sum of weights for each column (and slack).

Returns weights vector

Reimplemented from ClpMatrixBase.

virtual bool ClpPackedMatrix::canDoPartialPricing ( ) const [virtual]

Says whether it can do partial pricing.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::partialPricing	(	ClpSimplex *	model,
		double	start,
		double	end,
		int &	bestSequence,
		int &	numberWanted
	)			`[virtual]`

Partial pricing.

Reimplemented from ClpMatrixBase.

Reimplemented in ClpDynamicExampleMatrix, ClpDynamicMatrix, ClpGubDynamicMatrix, and ClpGubMatrix.

virtual int ClpPackedMatrix::refresh ( ClpSimplex * model ) [virtual]

makes sure active columns correct

Reimplemented from ClpMatrixBase.

Reimplemented in ClpDynamicMatrix.

virtual void ClpPackedMatrix::reallyScale	(	const double *	rowScale,
		const double *	columnScale
	)			`[virtual]`

Return a complete CoinPackedMatrix.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::setDimensions	(	int	numrows,
		int	numcols
	)			`[virtual]`

Set the dimensions of the matrix.

In effect, append new empty columns/rows to the matrix. A negative number for either dimension means that that dimension doesn't change. Otherwise the new dimensions MUST be at least as large as the current ones otherwise an exception is thrown.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::times	(	double	scalar,
		const double *	x,
		double *	y
	)			const `[virtual]`

Return y + A * scalar *x in y.

Precondition:: x must be of size numColumns(); y must be of size numRows()

Implements ClpMatrixBase.

Reimplemented in ClpDynamicMatrix, and ClpGubDynamicMatrix.

virtual void ClpPackedMatrix::times	(	double	scalar,
		const double *	x,
		double *	y,
		const double *	rowScale,
		const double *	columnScale
	)			const `[virtual]`

And for scaling.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::transposeTimes	(	double	scalar,
		const double *	x,
		double *	y
	)			const `[virtual]`

Return y + x * scalar * A in y.

Precondition:: x must be of size numRows(); y must be of size numColumns()

Implements ClpMatrixBase.

virtual void ClpPackedMatrix::transposeTimes	(	double	scalar,
		const double *	x,
		double *	y,
		const double *	rowScale,
		const double *	columnScale,
		double *	spare = `NULL`
	)			const `[virtual]`

And for scaling.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::transposeTimes	(	const ClpSimplex *	model,
		double	scalar,
		const CoinIndexedVector *	x,
		CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)			const `[virtual]`

Return x * scalar * A + y in z.

Can use y as temporary array (will be empty at end) Note - If x packed mode - then z packed mode Squashes small elements and knows about ClpSimplex

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

void ClpPackedMatrix::transposeTimesByColumn	(	const ClpSimplex *	model,
		double	scalar,
		const CoinIndexedVector *	x,
		CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)			const

Return x * scalar * A + y in z.

Note - If x packed mode - then z packed mode This does by column and knows no gaps Squashes small elements and knows about ClpSimplex

virtual void ClpPackedMatrix::transposeTimesByRow	(	const ClpSimplex *	model,
		double	scalar,
		const CoinIndexedVector *	x,
		CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)			const `[virtual]`

Return x * scalar * A + y in z.

Can use y as temporary array (will be empty at end) Note - If x packed mode - then z packed mode Squashes small elements and knows about ClpSimplex. This version uses row copy

Reimplemented in ClpGubMatrix.

virtual void ClpPackedMatrix::subsetTransposeTimes	(	const ClpSimplex *	model,
		const CoinIndexedVector *	x,
		const CoinIndexedVector *	y,
		CoinIndexedVector *	z
	)			const `[virtual]`

Return x *A in z but just for indices in y.

Note - z always packed mode

Implements ClpMatrixBase.

Reimplemented in ClpGubMatrix.

virtual bool ClpPackedMatrix::canCombine	(	const ClpSimplex *	model,
		const CoinIndexedVector *	pi
	)			const `[virtual]`

Returns true if can combine transposeTimes and subsetTransposeTimes and if it would be faster.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::transposeTimes2	(	const ClpSimplex *	model,
		const CoinIndexedVector *	pi1,
		CoinIndexedVector *	dj1,
		const CoinIndexedVector *	pi2,
		CoinIndexedVector *	dj2,
		CoinIndexedVector *	spare,
		double	referenceIn,
		double	devex,
		unsigned int *	reference,
		double *	weights,
		double	scaleFactor
	)			`[virtual]`

Updates two arrays for steepest.

Reimplemented from ClpMatrixBase.

virtual void ClpPackedMatrix::subsetTimes2	(	const ClpSimplex *	model,
		CoinIndexedVector *	dj1,
		const CoinIndexedVector *	pi2,
		CoinIndexedVector *	dj2,
		double	referenceIn,
		double	devex,
		unsigned int *	reference,
		double *	weights,
		double	scaleFactor
	)			`[virtual]`

Updates second array for steepest and does devex weights.

Reimplemented from ClpMatrixBase.

void ClpPackedMatrix::useEffectiveRhs ( ClpSimplex * model )

Sets up an effective RHS.

Reimplemented from ClpMatrixBase.

CoinPackedMatrix* ClpPackedMatrix::matrix ( ) const [inline]

Returns CoinPackedMatrix (non const).

Definition at line 261 of file ClpPackedMatrix.hpp.

void ClpPackedMatrix::setMatrixNull ( ) [inline]

Just sets matrix_ to NULL so it can be used elsewhere.

used in GUB

Definition at line 265 of file ClpPackedMatrix.hpp.

void ClpPackedMatrix::makeSpecialColumnCopy ( ) [inline]

Say we want special column copy.

Definition at line 268 of file ClpPackedMatrix.hpp.

void ClpPackedMatrix::releaseSpecialColumnCopy ( )

Say we don't want special column copy.

bool ClpPackedMatrix::zeros ( ) const [inline]

Are there zeros?

Definition at line 273 of file ClpPackedMatrix.hpp.

bool ClpPackedMatrix::wantsSpecialColumnCopy ( ) const [inline]

Do we want special column copy.

Definition at line 276 of file ClpPackedMatrix.hpp.

ClpPackedMatrix& ClpPackedMatrix::operator= ( const ClpPackedMatrix & )

The copy constructor.

Reimplemented from ClpMatrixBase.

Reimplemented in ClpDynamicExampleMatrix, ClpDynamicMatrix, ClpGubDynamicMatrix, and ClpGubMatrix.

virtual ClpMatrixBase* ClpPackedMatrix::clone ( ) const [virtual]

Clone.

Implements ClpMatrixBase.

Reimplemented in ClpDynamicExampleMatrix, ClpDynamicMatrix, ClpGubDynamicMatrix, and ClpGubMatrix.

virtual void ClpPackedMatrix::copy ( const ClpPackedMatrix * from ) [virtual]

Copy contents - resizing if necessary - otherwise re-use memory.

virtual ClpMatrixBase* ClpPackedMatrix::subsetClone	(	int	numberRows,
		const int *	whichRows,
		int	numberColumns,
		const int *	whichColumns
	)			const `[virtual]`

Subset clone (without gaps).

Duplicates are allowed and order is as given

Reimplemented from ClpMatrixBase.

Reimplemented in ClpGubMatrix.

void ClpPackedMatrix::specialRowCopy	(	ClpSimplex *	model,
		const ClpMatrixBase *	rowCopy
	)

make special row copy

void ClpPackedMatrix::specialColumnCopy ( ClpSimplex * model )

make special column copy

virtual void ClpPackedMatrix::correctSequence	(	const ClpSimplex *	model,
		int &	sequenceIn,
		int &	sequenceOut
	)			`[virtual]`

Correct sequence in and out to give true value.

Reimplemented from ClpMatrixBase.

Reimplemented in ClpGubMatrix.

void ClpPackedMatrix::gutsOfTransposeTimesUnscaled	(	const double *	pi,
		CoinIndexedVector *	output,
		const double	tolerance
	)			const `[private]`

Meat of transposeTimes by column when not scaled.

void ClpPackedMatrix::gutsOfTransposeTimesScaled	(	const double *	pi,
		const double *	columnScale,
		CoinIndexedVector *	output,
		const double	tolerance
	)			const `[private]`

Meat of transposeTimes by column when scaled.

void ClpPackedMatrix::gutsOfTransposeTimesByRowGE3	(	const CoinIndexedVector *	piVector,
		CoinIndexedVector *	output,
		CoinIndexedVector *	spareVector,
		const double	tolerance,
		const double	scalar
	)			const `[private]`

Meat of transposeTimes by row n > 2 if packed.

void ClpPackedMatrix::gutsOfTransposeTimesByRowEQ2	(	const CoinIndexedVector *	piVector,
		CoinIndexedVector *	output,
		CoinIndexedVector *	spareVector,
		const double	tolerance,
		const double	scalar
	)			const `[private]`

Meat of transposeTimes by row n == 2 if packed.

void ClpPackedMatrix::gutsOfTransposeTimesByRowEQ1	(	const CoinIndexedVector *	piVector,
		CoinIndexedVector *	output,
		const double	tolerance,
		const double	scalar
	)			const `[private]`