This implements a simple +- one matrix as derived from ClpMatrixBase. More...

#include <ClpPlusMinusOneMatrix.hpp>

Inheritance diagram for ClpPlusMinusOneMatrix:

Collaboration diagram for ClpPlusMinusOneMatrix:

Public Member Functions
Useful methods
virtual CoinPackedMatrix *	getPackedMatrix () const
	Return a complete CoinPackedMatrix. More...

virtual bool	isColOrdered () const
	Whether the packed matrix is column major ordered or not. More...

virtual CoinBigIndex	getNumElements () const
	Number of entries in the packed matrix. More...

virtual int	getNumCols () const
	Number of columns. More...

virtual int	getNumRows () const
	Number of rows. More...

virtual const double *	getElements () const
	A vector containing the elements in the packed matrix. More...

virtual const int *	getIndices () const
	A vector containing the minor indices of the elements in the packed matrix. More...

int *	getMutableIndices () const

virtual const CoinBigIndex *	getVectorStarts () const

virtual const int *	getVectorLengths () const
	The lengths of the major-dimension vectors. More...

virtual void	deleteCols (const int numDel, const int *indDel)
	Delete the columns whose indices are listed in `indDel`. More...

virtual void	deleteRows (const int numDel, const int *indDel)
	Delete the rows whose indices are listed in `indDel`. More...

virtual void	appendCols (int number, const CoinPackedVectorBase const columns)
	Append Columns. More...

virtual void	appendRows (int number, const CoinPackedVectorBase const rows)
	Append Rows. More...

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. More...

virtual ClpMatrixBase *	reverseOrderedCopy () const
	Returns a new matrix in reverse order without gaps. More...

virtual int	countBasis (const int *whichColumn, int &numberColumnBasic)
	Returns number of elements in column part of basis. More...

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. More...

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). More...

virtual void	rangeOfElements (double &smallestNegative, double &largestNegative, double &smallestPositive, double &largestPositive)
	Returns largest and smallest elements of both signs. More...

virtual void	unpack (const ClpSimplex model, CoinIndexedVector rowArray, int column) const
	Unpacks a column into an CoinIndexedvector. More...

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. More...

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. More...

virtual void	add (const ClpSimplex model, double array, int column, double multiplier) const
	Adds multiple of a column into an array. More...

virtual void	releasePackedMatrix () const
	Allow any parts of a created CoinMatrix to be deleted. More...

virtual void	setDimensions (int numrows, int numcols)
	Set the dimensions of the matrix. More...

void	checkValid (bool detail) const
	Just checks matrix valid - will say if dimensions not quite right if detail. More...

Matrix times vector methods
virtual void	times (double scalar, const double x, double y) const
	Return `y + A * scalar *x` in `y`. More...

virtual void	times (double scalar, const double x, double y, const double rowScale, const double columnScale) const
	And for scaling. More...

virtual void	transposeTimes (double scalar, const double x, double y) const
	Return `y + x * scalar * A` in `y`. More...

virtual void	transposeTimes (double scalar, const double x, double y, const double rowScale, const double columnScale, double *spare=NULL) const
	And for scaling. More...

virtual void	transposeTimes (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`. More...

virtual void	transposeTimesByRow (const ClpSimplex model, double scalar, const CoinIndexedVector x, CoinIndexedVector y, CoinIndexedVector z) const
	Return `x * scalar * A + y` in `z`. More...

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. More...

virtual bool	canCombine (const ClpSimplex model, const CoinIndexedVector pi) const
	Returns true if can combine transposeTimes and subsetTransposeTimes and if it would be faster. More...

virtual int	transposeTimes2 (const ClpSimplex model, const CoinIndexedVector pi1, CoinIndexedVector dj1, const CoinIndexedVector pi2, CoinIndexedVector spare, double infeas, double reducedCost, double referenceIn, double devex, unsigned int reference, double *weights, double scaleFactor)
	Updates two arrays for steepest and does devex weights Returns nonzero if updates reduced cost and infeas - new infeas in dj1. More...

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. More...

Other
CoinBigIndex *	startPositive () const
	Return starts of +1s. More...

CoinBigIndex *	startNegative () const
	Return starts of -1s. More...

Constructors, destructor
	ClpPlusMinusOneMatrix ()
	Default constructor. More...

virtual	~ClpPlusMinusOneMatrix ()
	Destructor. More...

Copy method
	ClpPlusMinusOneMatrix (const ClpPlusMinusOneMatrix &)
	The copy constructor. More...

	ClpPlusMinusOneMatrix (const CoinPackedMatrix &)
	The copy constructor from an CoinPlusMinusOneMatrix. More...

	ClpPlusMinusOneMatrix (int numberRows, int numberColumns, bool columnOrdered, const int indices, const CoinBigIndex startPositive, const CoinBigIndex *startNegative)
	Constructor from arrays. More...

	ClpPlusMinusOneMatrix (const ClpPlusMinusOneMatrix &wholeModel, int numberRows, const int whichRows, int numberColumns, const int whichColumns)
	Subset constructor (without gaps). More...

ClpPlusMinusOneMatrix &	operator= (const ClpPlusMinusOneMatrix &)

virtual ClpMatrixBase *	clone () const
	Clone. More...

virtual ClpMatrixBase *	subsetClone (int numberRows, const int whichRows, int numberColumns, const int whichColumns) const
	Subset clone (without gaps). More...

void	passInCopy (int numberRows, int numberColumns, bool columnOrdered, int indices, CoinBigIndex startPositive, CoinBigIndex *startNegative)
	pass in copy (object takes ownership) More...

virtual bool	canDoPartialPricing () const
	Says whether it can do partial pricing. More...

virtual void	partialPricing (ClpSimplex *model, double start, double end, int &bestSequence, int &numberWanted)
	Partial pricing. More...

Public Member Functions inherited from ClpMatrixBase
virtual int	getVectorLength (int index) const
	The length of a single major-dimension vector. More...

virtual void	modifyCoefficient (int row, int column, double newElement, bool keepZero=false)
	Modify one element of packed matrix. More...

virtual int	scale (ClpModel , ClpSimplex =NULL) const
	Creates scales for column copy (rowCopy in model may be modified) default does not allow scaling returns non-zero if no scaling done. More...

virtual void	scaleRowCopy (ClpModel *) const
	Scales rowCopy if column copy scaled Only called if scales already exist. More...

virtual bool	canGetRowCopy () const
	Returns true if can create row copy. More...

virtual ClpMatrixBase *	scaledColumnCopy (ClpModel *) const
	Realy really scales column copy Only called if scales already exist. More...

virtual bool	allElementsInRange (ClpModel *, double, double, int=15)
	Checks if all elements are in valid range. More...

virtual int	refresh (ClpSimplex *)
	Purely for column generation and similar ideas. More...

virtual void	reallyScale (const double rowScale, const double columnScale)

virtual int	hiddenRows () const
	Returns number of hidden rows e.g. gub. More...

virtual int	extendUpdated (ClpSimplex model, CoinIndexedVector update, int mode)
	expands an updated column to allow for extra rows which the main solver does not know about and returns number added. More...

virtual void	primalExpanded (ClpSimplex *model, int mode)
	utility primal function for dealing with dynamic constraints mode=0 - Set up before "update" and "times" for primal solution using extended rows mode=1 - Cleanup primal solution after "times" using extended rows. More...

virtual void	dualExpanded (ClpSimplex model, CoinIndexedVector array, double *other, int mode)
	utility dual function for dealing with dynamic constraints mode=0 - Set up before "updateTranspose" and "transposeTimes" for duals using extended updates array (and may use other if dual values pass) mode=1 - Update dual solution after "transposeTimes" using extended rows. More...

virtual int	generalExpanded (ClpSimplex *model, int mode, int &number)
	general utility function for dealing with dynamic constraints mode=0 - Create list of non-key basics in pivotVariable_ using number as numberBasic in and out mode=1 - Set all key variables as basic mode=2 - return number extra rows needed, number gives maximum number basic mode=3 - before replaceColumn mode=4 - return 1 if can do primal, 2 if dual, 3 if both mode=5 - save any status stuff (when in good state) mode=6 - restore status stuff mode=7 - flag given variable (normally sequenceIn) mode=8 - unflag all variables mode=9 - synchronize costs and bounds mode=10 - return 1 if there may be changing bounds on variable (column generation) mode=11 - make sure set is clean (used when a variable rejected - but not flagged) mode=12 - after factorize but before permute stuff mode=13 - at end of simplex to delete stuff More...

virtual int	updatePivot (ClpSimplex *model, double oldInValue, double oldOutValue)
	update information for a pivot (and effective rhs) More...

virtual void	createVariable (ClpSimplex *model, int &bestSequence)
	Creates a variable. More...

virtual int	checkFeasible (ClpSimplex *model, double &sum) const
	Just for debug if odd type matrix. More...

double	reducedCost (ClpSimplex *model, int sequence) const
	Returns reduced cost of a variable. More...

virtual void	correctSequence (const ClpSimplex *model, int &sequenceIn, int &sequenceOut)
	Correct sequence in and out to give true value (if both -1 maybe do whole matrix) More...

virtual void	times (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y) const =0
	Return `y + A * x * scalar` in `y`. More...

virtual void	times (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y, const double COIN_RESTRICT rowScale, const double COIN_RESTRICT columnScale) const
	And for scaling - default aborts for when scaling not supported (unless pointers NULL when as normal) More...

virtual void	transposeTimes (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y) const =0
	Return `y + x * scalar * A` in `y`. More...

virtual void	transposeTimes (double scalar, const double COIN_RESTRICT x, double COIN_RESTRICT y, const double COIN_RESTRICT rowScale, const double COIN_RESTRICT columnScale, double *COIN_RESTRICT spare=NULL) const
	And for scaling - default aborts for when scaling not supported (unless pointers NULL when as normal) More...

virtual void	listTransposeTimes (const ClpSimplex model, double x, int y, int number, double z) const
	Return `x *A` in `z` but just for number indices in y. More...

virtual void	backToBasics ()
	Gets rid of any mutable by products. More...

int	type () const
	Returns type. More...

void	setType (int newtype)
	Sets type. More...

void	useEffectiveRhs (ClpSimplex *model)
	Sets up an effective RHS. More...

virtual double *	rhsOffset (ClpSimplex *model, bool forceRefresh=false, bool check=false)
	Returns effective RHS offset if it is being used. More...

int	lastRefresh () const
	If rhsOffset used this is iteration last refreshed. More...

int	refreshFrequency () const
	If rhsOffset used this is refresh frequency (0==off) More...

void	setRefreshFrequency (int value)

bool	skipDualCheck () const
	whether to skip dual checks most of time More...

void	setSkipDualCheck (bool yes)

int	minimumObjectsScan () const
	Partial pricing tuning parameter - minimum number of "objects" to scan. More...

void	setMinimumObjectsScan (int value)

int	minimumGoodReducedCosts () const
	Partial pricing tuning parameter - minimum number of negative reduced costs to get. More...

void	setMinimumGoodReducedCosts (int value)

double	startFraction () const
	Current start of search space in matrix (as fraction) More...

void	setStartFraction (double value)

double	endFraction () const
	Current end of search space in matrix (as fraction) More...

void	setEndFraction (double value)

double	savedBestDj () const
	Current best reduced cost. More...

void	setSavedBestDj (double value)

int	originalWanted () const
	Initial number of negative reduced costs wanted. More...

void	setOriginalWanted (int value)

int	currentWanted () const
	Current number of negative reduced costs which we still need. More...

void	setCurrentWanted (int value)

int	savedBestSequence () const
	Current best sequence. More...

void	setSavedBestSequence (int value)

virtual	~ClpMatrixBase ()
	Destructor (has to be public) More...

Protected Attributes
Data members
The data members are protected to allow access for derived classes.
CoinPackedMatrix *	matrix_
	For fake CoinPackedMatrix. More...

int *	lengths_

CoinBigIndex *COIN_RESTRICT	startPositive_
	Start of +1's for each. More...

CoinBigIndex *COIN_RESTRICT	startNegative_
	Start of -1's for each. More...

int *COIN_RESTRICT	indices_
	Data -1, then +1 rows in pairs (row==-1 if one entry) More...

int	numberRows_
	Number of rows. More...

int	numberColumns_
	Number of columns. More...

bool	columnOrdered_
	True if column ordered. More...

Protected Attributes inherited from ClpMatrixBase
double *	rhsOffset_
	Effective RHS offset if it is being used. More...

double	startFraction_
	Current start of search space in matrix (as fraction) More...

double	endFraction_
	Current end of search space in matrix (as fraction) More...

double	savedBestDj_
	Best reduced cost so far. More...

int	originalWanted_
	Initial number of negative reduced costs wanted. More...

int	currentWanted_
	Current number of negative reduced costs which we still need. More...

int	savedBestSequence_
	Saved best sequence in pricing. More...

int	type_
	type (may be useful) More...

int	lastRefresh_
	If rhsOffset used this is iteration last refreshed. More...

int	refreshFrequency_
	If rhsOffset used this is refresh frequency (0==off) More...

int	minimumObjectsScan_
	Partial pricing tuning parameter - minimum number of "objects" to scan. More...

int	minimumGoodReducedCosts_
	Partial pricing tuning parameter - minimum number of negative reduced costs to get. More...

int	trueSequenceIn_
	True sequence in (i.e. from larger problem) More...

int	trueSequenceOut_
	True sequence out (i.e. from larger problem) More...

bool	skipDualCheck_
	whether to skip dual checks most of time More...

Additional Inherited Members
Protected Member Functions inherited from ClpMatrixBase
	ClpMatrixBase ()
	Default constructor. More...

	ClpMatrixBase (const ClpMatrixBase &)

ClpMatrixBase &	operator= (const ClpMatrixBase &)

Detailed Description

This implements a simple +- one matrix as derived from ClpMatrixBase.

Definition at line 17 of file ClpPlusMinusOneMatrix.hpp.

Constructor & Destructor Documentation

◆ ClpPlusMinusOneMatrix() [1/5]

ClpPlusMinusOneMatrix::ClpPlusMinusOneMatrix ( )

Default constructor.

◆ ~ClpPlusMinusOneMatrix()

virtual ClpPlusMinusOneMatrix::~ClpPlusMinusOneMatrix ( )

virtual

Destructor.

◆ ClpPlusMinusOneMatrix() [2/5]

ClpPlusMinusOneMatrix::ClpPlusMinusOneMatrix ( const ClpPlusMinusOneMatrix & )

The copy constructor.

◆ ClpPlusMinusOneMatrix() [3/5]

ClpPlusMinusOneMatrix::ClpPlusMinusOneMatrix ( const CoinPackedMatrix & )

The copy constructor from an CoinPlusMinusOneMatrix.

If not a valid matrix then getIndices will be NULL and startPositive[0] will have number of +1, startPositive[1] will have number of -1, startPositive[2] will have number of others,

◆ ClpPlusMinusOneMatrix() [4/5]

ClpPlusMinusOneMatrix::ClpPlusMinusOneMatrix	(	int	numberRows,
		int	numberColumns,
		bool	columnOrdered,
		const int *	indices,
		const CoinBigIndex *	startPositive,
		const CoinBigIndex *	startNegative
	)

Constructor from arrays.

◆ ClpPlusMinusOneMatrix() [5/5]

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

Subset constructor (without gaps).

Duplicates are allowed and order is as given

Member Function Documentation

◆ getPackedMatrix()

virtual CoinPackedMatrix* ClpPlusMinusOneMatrix::getPackedMatrix ( ) const

virtual

Return a complete CoinPackedMatrix.

Implements ClpMatrixBase.

◆ isColOrdered()

virtual bool ClpPlusMinusOneMatrix::isColOrdered ( ) const

virtual

Whether the packed matrix is column major ordered or not.

Implements ClpMatrixBase.

◆ getNumElements()

virtual CoinBigIndex ClpPlusMinusOneMatrix::getNumElements ( ) const

virtual

Number of entries in the packed matrix.

Implements ClpMatrixBase.

◆ getNumCols()

virtual int ClpPlusMinusOneMatrix::getNumCols ( ) const

inlinevirtual

Number of columns.

Implements ClpMatrixBase.

Definition at line 29 of file ClpPlusMinusOneMatrix.hpp.

◆ getNumRows()

virtual int ClpPlusMinusOneMatrix::getNumRows ( ) const

inlinevirtual

Number of rows.

Implements ClpMatrixBase.

Definition at line 34 of file ClpPlusMinusOneMatrix.hpp.

◆ getElements()

virtual const double* ClpPlusMinusOneMatrix::getElements ( ) const

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.

◆ getIndices()

virtual const int* ClpPlusMinusOneMatrix::getIndices ( ) const

inlinevirtual

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 ClpPlusMinusOneMatrix.hpp.

◆ getMutableIndices()

int* ClpPlusMinusOneMatrix::getMutableIndices ( ) const

inline

Definition at line 54 of file ClpPlusMinusOneMatrix.hpp.

◆ getVectorStarts()

virtual const CoinBigIndex* ClpPlusMinusOneMatrix::getVectorStarts ( ) const

virtual

Implements ClpMatrixBase.

◆ getVectorLengths()

virtual const int* ClpPlusMinusOneMatrix::getVectorLengths ( ) const

virtual

The lengths of the major-dimension vectors.

Implements ClpMatrixBase.

◆ deleteCols()

virtual void ClpPlusMinusOneMatrix::deleteCols	(	const int	numDel,
		const int *	indDel
	)

virtual

Delete the columns whose indices are listed in indDel.

Implements ClpMatrixBase.

◆ deleteRows()

virtual void ClpPlusMinusOneMatrix::deleteRows	(	const int	numDel,
		const int *	indDel
	)

virtual

Delete the rows whose indices are listed in indDel.

Implements ClpMatrixBase.

◆ appendCols()

virtual void ClpPlusMinusOneMatrix::appendCols	(	int	number,
		const CoinPackedVectorBase const	columns
	)

virtual

Append Columns.

Reimplemented from ClpMatrixBase.

◆ appendRows()

virtual void ClpPlusMinusOneMatrix::appendRows	(	int	number,
		const CoinPackedVectorBase const	rows
	)

virtual

Append Rows.

Reimplemented from ClpMatrixBase.

◆ appendMatrix()

virtual int ClpPlusMinusOneMatrix::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.

◆ reverseOrderedCopy()

virtual ClpMatrixBase* ClpPlusMinusOneMatrix::reverseOrderedCopy ( ) const

virtual

Returns a new matrix in reverse order without gaps.

Reimplemented from ClpMatrixBase.

◆ countBasis()

virtual int ClpPlusMinusOneMatrix::countBasis	(	const int *	whichColumn,
		int &	numberColumnBasic
	)

virtual

Returns number of elements in column part of basis.

Implements ClpMatrixBase.

◆ fillBasis()

virtual void ClpPlusMinusOneMatrix::fillBasis	(	ClpSimplex *	model,
		const int *	whichColumn,
		int &	numberColumnBasic,
		int *	row,
		int *	start,
		int *	rowCount,
		int *	columnCount,
		CoinFactorizationDouble *	element
	)

virtual

Fills in column part of basis.

Implements ClpMatrixBase.

◆ dubiousWeights()

virtual CoinBigIndex* ClpPlusMinusOneMatrix::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.

◆ rangeOfElements()

virtual void ClpPlusMinusOneMatrix::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.

◆ unpack()

virtual void ClpPlusMinusOneMatrix::unpack	(	const ClpSimplex *	model,
		CoinIndexedVector *	rowArray,
		int	column
	)		const

virtual

Unpacks a column into an CoinIndexedvector.

Implements ClpMatrixBase.

◆ unpackPacked()

virtual void ClpPlusMinusOneMatrix::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.

◆ add() [1/2]

virtual void ClpPlusMinusOneMatrix::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.

◆ add() [2/2]

virtual void ClpPlusMinusOneMatrix::add	(	const ClpSimplex *	model,
		double *	array,
		int	column,
		double	multiplier
	)		const

virtual

Adds multiple of a column into an array.

Implements ClpMatrixBase.

◆ releasePackedMatrix()

virtual void ClpPlusMinusOneMatrix::releasePackedMatrix ( ) const

virtual

Allow any parts of a created CoinMatrix to be deleted.

Implements ClpMatrixBase.

◆ setDimensions()

virtual void ClpPlusMinusOneMatrix::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.

◆ checkValid()

void ClpPlusMinusOneMatrix::checkValid ( bool detail ) const

Just checks matrix valid - will say if dimensions not quite right if detail.

◆ times() [1/2]

virtual void ClpPlusMinusOneMatrix::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()

◆ times() [2/2]

virtual void ClpPlusMinusOneMatrix::times	(	double	scalar,
		const double *	x,
		double *	y,
		const double *	rowScale,
		const double *	columnScale
	)		const

virtual

And for scaling.

◆ transposeTimes() [1/3]

virtual void ClpPlusMinusOneMatrix::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()

◆ transposeTimes() [2/3]

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

virtual

And for scaling.

◆ transposeTimes() [3/3]

virtual void ClpPlusMinusOneMatrix::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.

◆ transposeTimesByRow()

virtual void ClpPlusMinusOneMatrix::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

◆ subsetTransposeTimes()

virtual void ClpPlusMinusOneMatrix::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.

◆ canCombine()

virtual bool ClpPlusMinusOneMatrix::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.

◆ transposeTimes2()

virtual int ClpPlusMinusOneMatrix::transposeTimes2	(	const ClpSimplex *	model,
		const CoinIndexedVector *	pi1,
		CoinIndexedVector *	dj1,
		const CoinIndexedVector *	pi2,
		CoinIndexedVector *	spare,
		double *	infeas,
		double *	reducedCost,
		double	referenceIn,
		double	devex,
		unsigned int *	reference,
		double *	weights,
		double	scaleFactor
	)

virtual

Updates two arrays for steepest and does devex weights Returns nonzero if updates reduced cost and infeas - new infeas in dj1.

Reimplemented from ClpMatrixBase.

◆ subsetTimes2()

virtual void ClpPlusMinusOneMatrix::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.

◆ startPositive()

CoinBigIndex* ClpPlusMinusOneMatrix::startPositive ( ) const

inline

Return starts of +1s.

Definition at line 208 of file ClpPlusMinusOneMatrix.hpp.

◆ startNegative()

CoinBigIndex* ClpPlusMinusOneMatrix::startNegative ( ) const

inline

Return starts of -1s.

Definition at line 213 of file ClpPlusMinusOneMatrix.hpp.

◆ operator=()

ClpPlusMinusOneMatrix& ClpPlusMinusOneMatrix::operator= ( const ClpPlusMinusOneMatrix & )

◆ clone()

virtual ClpMatrixBase* ClpPlusMinusOneMatrix::clone ( ) const

virtual

Clone.

Implements ClpMatrixBase.

◆ subsetClone()

virtual ClpMatrixBase* ClpPlusMinusOneMatrix::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.

◆ passInCopy()

void ClpPlusMinusOneMatrix::passInCopy	(	int	numberRows,
		int	numberColumns,
		bool	columnOrdered,
		int *	indices,
		CoinBigIndex *	startPositive,
		CoinBigIndex *	startNegative
	)

pass in copy (object takes ownership)

◆ canDoPartialPricing()

virtual bool ClpPlusMinusOneMatrix::canDoPartialPricing ( ) const

virtual

Says whether it can do partial pricing.

Reimplemented from ClpMatrixBase.

◆ partialPricing()

virtual void ClpPlusMinusOneMatrix::partialPricing	(	ClpSimplex *	model,
		double	start,
		double	end,
		int &	bestSequence,
		int &	numberWanted
	)

virtual

Partial pricing.

Reimplemented from ClpMatrixBase.

Member Data Documentation

◆ matrix_

CoinPackedMatrix* ClpPlusMinusOneMatrix::matrix_

mutableprotected

For fake CoinPackedMatrix.

Definition at line 272 of file ClpPlusMinusOneMatrix.hpp.

◆ lengths_

int* ClpPlusMinusOneMatrix::lengths_

mutableprotected

Definition at line 273 of file ClpPlusMinusOneMatrix.hpp.

◆ startPositive_

CoinBigIndex* COIN_RESTRICT ClpPlusMinusOneMatrix::startPositive_

protected

Start of +1's for each.

Definition at line 275 of file ClpPlusMinusOneMatrix.hpp.

◆ startNegative_

CoinBigIndex* COIN_RESTRICT ClpPlusMinusOneMatrix::startNegative_

protected

Start of -1's for each.

Definition at line 277 of file ClpPlusMinusOneMatrix.hpp.

◆ indices_

int* COIN_RESTRICT ClpPlusMinusOneMatrix::indices_

protected

Data -1, then +1 rows in pairs (row==-1 if one entry)

Definition at line 279 of file ClpPlusMinusOneMatrix.hpp.

◆ numberRows_

int ClpPlusMinusOneMatrix::numberRows_

protected

Number of rows.

Definition at line 281 of file ClpPlusMinusOneMatrix.hpp.

◆ numberColumns_

int ClpPlusMinusOneMatrix::numberColumns_

protected

Number of columns.

Definition at line 283 of file ClpPlusMinusOneMatrix.hpp.

◆ columnOrdered_

bool ClpPlusMinusOneMatrix::columnOrdered_

protected

True if column ordered.

Definition at line 291 of file ClpPlusMinusOneMatrix.hpp.

The documentation for this class was generated from the following file:

/home/ted/tmp/tmp/Clp/Clp/src/ClpPlusMinusOneMatrix.hpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ClpPlusMinusOneMatrix() [1/5]

◆ ~ClpPlusMinusOneMatrix()

◆ ClpPlusMinusOneMatrix() [2/5]

◆ ClpPlusMinusOneMatrix() [3/5]

◆ ClpPlusMinusOneMatrix() [4/5]

◆ ClpPlusMinusOneMatrix() [5/5]

Member Function Documentation

◆ getPackedMatrix()

◆ isColOrdered()

◆ getNumElements()

◆ getNumCols()

◆ getNumRows()

◆ getElements()

◆ getIndices()

◆ getMutableIndices()

◆ getVectorStarts()

◆ getVectorLengths()

◆ deleteCols()

◆ deleteRows()

◆ appendCols()

◆ appendRows()

◆ appendMatrix()

◆ reverseOrderedCopy()

◆ countBasis()

◆ fillBasis()

◆ dubiousWeights()

◆ rangeOfElements()

◆ unpack()

◆ unpackPacked()

◆ add() [1/2]

◆ add() [2/2]

◆ releasePackedMatrix()

◆ setDimensions()

◆ checkValid()

◆ times() [1/2]

◆ times() [2/2]

◆ transposeTimes() [1/3]

◆ transposeTimes() [2/3]

◆ transposeTimes() [3/3]

◆ transposeTimesByRow()

◆ subsetTransposeTimes()

◆ canCombine()

◆ transposeTimes2()

◆ subsetTimes2()

◆ startPositive()

◆ startNegative()

◆ operator=()

◆ clone()

◆ subsetClone()

◆ passInCopy()

◆ canDoPartialPricing()

◆ partialPricing()

Member Data Documentation

◆ matrix_

◆ lengths_

◆ startPositive_

◆ startNegative_

◆ indices_

◆ numberRows_

◆ numberColumns_

◆ columnOrdered_