Base class for all matrices stored in sparse format. More...

#include <sparsemtrx.h>

Inheritance diagram for oofem::SparseMtrx:

Public Types
typedef long	SparseMtrxVersionType

Public Member Functions
	SparseMtrx (int n, int m)
	Constructor, creates (n,m) sparse matrix. More...

	SparseMtrx ()
	Constructor. More...

virtual	~SparseMtrx ()
	Destructor. More...

SparseMtrxVersionType	giveVersion ()
	Return receiver version. More...

void	checkBounds (int i, int j) const
	Checks size of receiver towards requested bounds. More...

int	giveNumberOfRows () const
	Returns number of rows of receiver. More...

int	giveNumberOfColumns () const
	Returns number of columns of receiver. More...

bool	isSquare () const
	Returns nonzero if receiver is square matrix. More...

bool	isNotEmpty () const
	Tests for empty matrix. More...

virtual SparseMtrx *	GiveCopy () const
	Returns a newly allocated copy of receiver. More...

virtual void	times (const FloatArray &x, FloatArray &answer) const
	Evaluates $y = A \cdot x$ . More...

virtual void	timesT (const FloatArray &x, FloatArray &answer) const
	Evaluates $y = A^{\mathrm{T}} \cdot x$ . More...

virtual void	times (const FloatMatrix &B, FloatMatrix &answer) const
	Evaluates $C = A^{\mathrm{T}} \cdot B$ . More...

virtual void	timesT (const FloatMatrix &B, FloatMatrix &answer) const
	Evaluates $C = A^{\mathrm{T}} \cdot B$ . More...

virtual void	times (double x)
	Multiplies receiver by scalar value. More...

virtual void	add (double x, SparseMtrx &m)
	Adds x * m. More...

virtual void	addDiagonal (double x, FloatArray &m)
	Adds x * m (treats m as a diagonal matrix, stored as an array) More...

virtual int	buildInternalStructure (EngngModel *eModel, int n, int m, const IntArray &I, const IntArray &J)
	Builds internal structure of receiver based on I and J. More...

virtual int	buildInternalStructure (EngngModel *eModel, int di, const UnknownNumberingScheme &s)=0
	Builds internal structure of receiver. More...

virtual int	buildInternalStructure (EngngModel *eModel, int di, const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s)
	Build internal structure of receiver. More...

virtual int	assemble (const IntArray &loc, const FloatMatrix &mat)=0
	Assembles sparse matrix from contribution of local elements. More...

virtual int	assemble (const IntArray &rloc, const IntArray &cloc, const FloatMatrix &mat)=0
	Assembles sparse matrix from contribution of local elements. More...

virtual int	assembleBegin ()
	Starts assembling the elements. More...

virtual int	assembleEnd ()
	Returns when assemble is completed. More...

virtual bool	canBeFactorized () const =0
	Determines, whether receiver can be factorized. More...

virtual SparseMtrx *	factorized ()
	Returns the receiver factorized. More...

virtual FloatArray *	backSubstitutionWith (FloatArray &y) const
	Computes the solution of linear system $A\cdot x = y$ where A is receiver. More...

virtual void	zero ()=0
	Zeroes the receiver. More...

virtual double	computeNorm () const
	Returns the norm of receiver. More...

virtual SparseMtrx *	giveSubMatrix (const IntArray &rows, const IntArray &cols)

virtual double &	at (int i, int j)=0
	Returns coefficient at position (i,j). More...

virtual double	at (int i, int j) const =0
	Returns coefficient at position (i,j). More...

virtual bool	isAllocatedAt (int i, int j) const
	Checks whether memory is allocated at position (i,j). More...

virtual void	toFloatMatrix (FloatMatrix &answer) const
	Converts receiving sparse matrix to a dense float matrix. More...

virtual void	printStatistics () const
	Prints the receiver statistics (one-line) to stdout. More...

virtual void	printYourself () const
	Prints receiver to stdout. Works only for relatively small matrices. More...

virtual void	writeToFile (const char *fname) const
	Helpful for debugging, writes the matrix to given file. More...

virtual SparseMtrxType	giveType () const =0
	Sparse matrix type identification. More...

virtual bool	isAsymmetric () const =0
	Returns true if asymmetric. More...

virtual const char *	giveClassName () const =0

std::string	errorInfo (const char *func) const
	Error printing helper. More...

IML compatibility
FloatArray	operator* (const FloatArray &x) const
	IML compatibility, $A \cdot x$ . More...

FloatArray	trans_mult (const FloatArray &x) const
	IML compatibility, $A^{\mathrm{T}} \cdot x$ . More...

Protected Attributes
int	nRows
	Number of rows. More...

int	nColumns
	Number of columns. More...

SparseMtrxVersionType	version
	Allows to track if receiver changes. More...

Detailed Description

Base class for all matrices stored in sparse format.

Basically sparse matrix contains contribution of local element matrices. Localization of local element matrix into global (structural) matrix is determined using element code numbers. Basic methods include

Building internal structure of sparse matrix (according to code numbers of elements)
Assembling of local element matrices
Multiplication by array
Possible factorization and back substitution.

Definition at line 60 of file sparsemtrx.h.

Member Typedef Documentation

typedef long oofem::SparseMtrx::SparseMtrxVersionType

Definition at line 63 of file sparsemtrx.h.

Constructor & Destructor Documentation

oofem::SparseMtrx::SparseMtrx	(	int	n,
		int	m
	)

inline

Constructor, creates (n,m) sparse matrix.

Due to sparsity character of matrix, not all coefficient are physically stored (in general, zero members are omitted).

Definition at line 87 of file sparsemtrx.h.

oofem::SparseMtrx::SparseMtrx ( )

inline

Constructor.

Definition at line 89 of file sparsemtrx.h.

virtual oofem::SparseMtrx::~SparseMtrx ( )

inlinevirtual

Destructor.

Definition at line 91 of file sparsemtrx.h.

Member Function Documentation

virtual void oofem::SparseMtrx::add	(	double	x,
		SparseMtrx &	m
	)

inlinevirtual

Adds x * m.

Parameters

x	Value to multiply m by.
m	Matrix to add (should of the same matrix type).

Reimplemented in oofem::Skyline, and oofem::PetscSparseMtrx.

Definition at line 166 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual void oofem::SparseMtrx::addDiagonal	(	double	x,
		FloatArray &	m
	)

inlinevirtual

Adds x * m (treats m as a diagonal matrix, stored as an array)

Parameters

x	Value to multiply m by.
m	Matrix to add.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 172 of file sparsemtrx.h.

References oofem::FloatArray::at(), and oofem::FloatArray::giveSize().

virtual int oofem::SparseMtrx::assemble	(	const IntArray &	loc,
		const FloatMatrix &	mat
	)

pure virtual

Assembles sparse matrix from contribution of local elements.

This method for each element adds its contribution to itself. Mapping between local element contribution and its global position is given by local code numbers of element.

Parameters

loc	Location array. The values corresponding to zero loc array value are not assembled.
mat	Contribution to be assembled using loc array.

Returns: Zero iff successful.

Implemented in oofem::CompCol, oofem::Skyline, oofem::SymCompCol, oofem::DynCompCol, oofem::DynCompRow, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

virtual int oofem::SparseMtrx::assemble	(	const IntArray &	rloc,
		const IntArray &	cloc,
		const FloatMatrix &	mat
	)

pure virtual

Assembles sparse matrix from contribution of local elements.

This method for each element adds its contribution to itself. Mapping between local element contribution and its global position is given by row and column local code numbers.

Parameters

rloc	Row location array. The values corresponding to zero loc array value are not assembled.
cloc	Column location array. The values corresponding to zero loc array value are not assembled.
mat	Contribution to be assembled using rloc and cloc arrays. The rloc position determines the row, the cloc position determines the corresponding column.

Returns: Zero iff successful.

Implemented in oofem::CompCol, oofem::Skyline, oofem::SymCompCol, oofem::DynCompCol, oofem::DynCompRow, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

virtual int oofem::SparseMtrx::assembleBegin ( )

inlinevirtual

Starts assembling the elements.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 235 of file sparsemtrx.h.

Referenced by oofem::EngngModel::assemble().

virtual int oofem::SparseMtrx::assembleEnd ( )

inlinevirtual

Returns when assemble is completed.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 237 of file sparsemtrx.h.

Referenced by oofem::EngngModel::assemble().

virtual double& oofem::SparseMtrx::at	(	int	i,
		int	j
	)

pure virtual

Returns coefficient at position (i,j).

Implemented in oofem::Skyline, oofem::CompCol, oofem::SymCompCol, oofem::DynCompCol, oofem::DynCompRow, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Referenced by oofem::NRSolver::applyConstraintsToLoadIncrement(), oofem::NRSolver::applyConstraintsToStiffness(), oofem::MicroMaterial::giveMacroStiffnessMatrix(), oofem::DiagPreconditioner::init(), oofem::InverseIteration::solve(), oofem::SubspaceIteration::solve(), and oofem::FreeWarping::updateStiffnessMatrix().

virtual double oofem::SparseMtrx::at	(	int	i,
		int	j
	)		const

pure virtual

Returns coefficient at position (i,j).

Implemented in oofem::Skyline, oofem::CompCol, oofem::SymCompCol, oofem::DynCompCol, oofem::DynCompRow, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

virtual FloatArray* oofem::SparseMtrx::backSubstitutionWith ( FloatArray & y ) const

inlinevirtual

Computes the solution of linear system $A\cdot x = y$ where A is receiver.

Solution vector x overwrites the right hand side vector y. Receiver must be in factorized form.

Parameters

y	Right hand side on input, solution on output.

Returns: Pointer to y array.

Reimplemented in oofem::Skyline, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Definition at line 253 of file sparsemtrx.h.

Referenced by oofem::MicroMaterial::giveMacroStiffnessMatrix(), oofem::LDLTFactorization::solve(), and oofem::SubspaceIteration::solve().

virtual int oofem::SparseMtrx::buildInternalStructure	(	EngngModel *	eModel,
		int	n,
		int	m,
		const IntArray &	I,
		const IntArray &	J
	)

inlinevirtual

Builds internal structure of receiver based on I and J.

This call is for special purpose uses. Normal problems should use the other prealloation methods.

Parameters

eModel	Pointer to corresponding engineering model.
I	Row indices
J	Column indices

Returns: Zero iff successful.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 185 of file sparsemtrx.h.

References OOFEM_ERROR.

Referenced by oofem::MicroMaterial::giveMacroStiffnessMatrix().

virtual int oofem::SparseMtrx::buildInternalStructure	(	EngngModel *	eModel,
		int	di,
		const UnknownNumberingScheme &	s
	)

pure virtual

Builds internal structure of receiver.

This method determines the internal profile of sparse matrix, allocates necessary space for storing nonzero coefficients and initializes receiver. In general, the profile of sparse matrix is determined using one (or more) loop over local code numbers of elements. This method must be called before any operation, like assembly, zeroing, or multiplication.

Parameters

eModel	Pointer to corresponding engineering model.
di	Domain index specify which domain to use.
s	Determines unknown numbering scheme.

Returns: Zero iff successful.

Implemented in oofem::CompCol, oofem::SymCompCol, oofem::Skyline, oofem::DynCompCol, oofem::DynCompRow, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

virtual int oofem::SparseMtrx::buildInternalStructure	(	EngngModel *	eModel,
		int	di,
		const UnknownNumberingScheme &	r_s,
		const UnknownNumberingScheme &	c_s
	)

inlinevirtual

Build internal structure of receiver.

See also: buildInternalStructure

Parameters

eModel	Pointer to corresponding engineering model.
di	Domain index specify which domain to use.
r_s	Determines unknown numbering scheme for the rows.
c_s	Determines unknown numbering scheme for the columns.

Returns: Zero iff successful.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 208 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual bool oofem::SparseMtrx::canBeFactorized ( ) const

pure virtual

Determines, whether receiver can be factorized.

Implemented in oofem::CompCol, oofem::Skyline, oofem::SymCompCol, oofem::DynCompCol, oofem::PetscSparseMtrx, oofem::DynCompRow, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Referenced by oofem::LDLTFactorization::solve().

void oofem::SparseMtrx::checkBounds	(	int	i,
		int	j
	)		const

inline

Checks size of receiver towards requested bounds.

Current implementation will call exit(1), if positions are outside bounds.

Parameters

i	Required number of rows.
j	Required number of columns.

Definition at line 102 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual double oofem::SparseMtrx::computeNorm ( ) const

inlinevirtual

Returns the norm of receiver.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 258 of file sparsemtrx.h.

References OOFEM_ERROR.

std :: string oofem::SparseMtrx::errorInfo ( const char * func ) const

inline

Error printing helper.

Definition at line 287 of file sparsemtrx.h.

References oofem::operator*().

virtual SparseMtrx* oofem::SparseMtrx::factorized ( )

inlinevirtual

Returns the receiver factorized.

$L^{\mathrm{T}} \cdot D \cdot L$ form is used.

Returns: pointer to the receiver

Reimplemented in oofem::Skyline, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Definition at line 245 of file sparsemtrx.h.

Referenced by oofem::MicroMaterial::giveMacroStiffnessMatrix(), oofem::LDLTFactorization::solve(), and oofem::SubspaceIteration::solve().

virtual const char* oofem::SparseMtrx::giveClassName ( ) const

pure virtual

Implemented in oofem::Skyline, oofem::CompCol, oofem::SymCompCol, oofem::PetscSparseMtrx, oofem::DynCompCol, oofem::SkylineUnsym, and oofem::DynCompRow.

virtual SparseMtrx* oofem::SparseMtrx::GiveCopy ( ) const

inlinevirtual

Returns a newly allocated copy of receiver.

Programmer must take care about proper deallocation of allocated space.

Returns: Newly allocated copy of receiver.

Reimplemented in oofem::CompCol, oofem::SymCompCol, oofem::Skyline, oofem::DynCompCol, oofem::DynCompRow, oofem::SkylineUnsym, oofem::SpoolesSparseMtrx, and oofem::PetscSparseMtrx.

Definition at line 127 of file sparsemtrx.h.

References OOFEM_ERROR.

int oofem::SparseMtrx::giveNumberOfColumns ( ) const

inline

Returns number of columns of receiver.

Definition at line 116 of file sparsemtrx.h.

Referenced by oofem::MicroMaterial::giveMacroStiffnessMatrix(), oofem::CompCol_ILUPreconditioner::initialize(), oofem::SLEPcSolver::solve(), oofem::SuperLUSolver::solve(), oofem::InverseIteration::solve(), oofem::SubspaceIteration::solve(), oofem::PetscSparseMtrx::times(), oofem::SpoolesSparseMtrx::times(), oofem::PetscSparseMtrx::timesT(), oofem::PetscSparseMtrx::toFloatMatrix(), and oofem::Skyline::toFloatMatrix().

int oofem::SparseMtrx::giveNumberOfRows ( ) const

inline

Returns number of rows of receiver.

Definition at line 114 of file sparsemtrx.h.

Referenced by oofem::Skyline::at(), oofem::Skyline::backSubstitutionWith(), oofem::PetscSparseMtrx::createVecGlobal(), oofem::Skyline::factorized(), oofem::Skyline::GiveCopy(), oofem::DiagPreconditioner::init(), oofem::CompCol_ILUPreconditioner::initialize(), oofem::Skyline::ldl_feti_sky(), oofem::Skyline::rbmodes(), oofem::PetscSparseMtrx::scatterG2L(), oofem::SLEPcSolver::solve(), oofem::PardisoProjectOrgSolver::solve(), oofem::SuperLUSolver::solve(), oofem::SparseLinearSystemNM::solve(), oofem::SpoolesSolver::solve(), oofem::FETISolver::solve(), oofem::PetscSparseMtrx::times(), oofem::Skyline::times(), oofem::PetscSparseMtrx::timesT(), oofem::SpoolesSparseMtrx::timesT(), oofem::PetscSparseMtrx::toFloatMatrix(), and oofem::Skyline::~Skyline().

virtual SparseMtrx* oofem::SparseMtrx::giveSubMatrix	(	const IntArray &	rows,
		const IntArray &	cols
	)

inlinevirtual

Reimplemented in oofem::Skyline, and oofem::PetscSparseMtrx.

Definition at line 263 of file sparsemtrx.h.

References OOFEM_ERROR.

Referenced by oofem::StaggeredSolver::solve().

virtual SparseMtrxType oofem::SparseMtrx::giveType ( ) const

pure virtual

Sparse matrix type identification.

Implemented in oofem::Skyline, oofem::CompCol, oofem::SymCompCol, oofem::PetscSparseMtrx, oofem::DynCompCol, oofem::SkylineUnsym, oofem::SpoolesSparseMtrx, and oofem::DynCompRow.

SparseMtrxVersionType oofem::SparseMtrx::giveVersion ( )

inline

Return receiver version.

Definition at line 94 of file sparsemtrx.h.

Referenced by oofem::NRSolver::applyConstraintsToStiffness(), oofem::SpoolesSolver::solve(), and oofem::IMLSolver::solve().

virtual bool oofem::SparseMtrx::isAllocatedAt	(	int	i,
		int	j
	)		const

inlinevirtual

Checks whether memory is allocated at position (i,j).

Reimplemented in oofem::Skyline.

Definition at line 271 of file sparsemtrx.h.

Referenced by oofem::MicroMaterial::giveMacroStiffnessMatrix().

virtual bool oofem::SparseMtrx::isAsymmetric ( ) const

pure virtual

Returns true if asymmetric.

Implemented in oofem::Skyline, oofem::CompCol, oofem::PetscSparseMtrx, oofem::DynCompCol, oofem::SkylineUnsym, oofem::SpoolesSparseMtrx, and oofem::DynCompRow.

bool oofem::SparseMtrx::isNotEmpty ( ) const

inline

Tests for empty matrix.

Definition at line 120 of file sparsemtrx.h.

bool oofem::SparseMtrx::isSquare ( ) const

inline

Returns nonzero if receiver is square matrix.

Definition at line 118 of file sparsemtrx.h.

FloatArray oofem::SparseMtrx::operator* ( const FloatArray & x ) const

inline

IML compatibility, $A \cdot x$ .

Definition at line 291 of file sparsemtrx.h.

virtual void oofem::SparseMtrx::printStatistics ( ) const

inlinevirtual

Prints the receiver statistics (one-line) to stdout.

Reimplemented in oofem::DynCompCol, oofem::PetscSparseMtrx, oofem::DynCompRow, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Definition at line 275 of file sparsemtrx.h.

References OOFEM_LOG_INFO.

Referenced by oofem::NonLinearDynamic::assemble(), and oofem::NonLinearStatic::assemble().

virtual void oofem::SparseMtrx::printYourself ( ) const

inlinevirtual

Prints receiver to stdout. Works only for relatively small matrices.

Reimplemented in oofem::Skyline, oofem::CompCol, oofem::PetscSparseMtrx, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Definition at line 277 of file sparsemtrx.h.

References OOFEM_LOG_INFO.

virtual void oofem::SparseMtrx::times	(	const FloatArray &	x,
		FloatArray &	answer
	)		const

inlinevirtual

Evaluates $y = A \cdot x$ .

Parameters

x	Array to be multiplied with receiver.
answer	y.

Reimplemented in oofem::CompCol, oofem::SymCompCol, oofem::Skyline, oofem::DynCompCol, oofem::DynCompRow, oofem::SkylineUnsym, oofem::SpoolesSparseMtrx, and oofem::PetscSparseMtrx.

Definition at line 137 of file sparsemtrx.h.

References OOFEM_ERROR.

Referenced by oofem::InverseIteration::solve(), oofem::SubspaceIteration::solve(), and oofem::SUPG::solveYourselfAt().

virtual void oofem::SparseMtrx::times	(	const FloatMatrix &	B,
		FloatMatrix &	answer
	)		const

inlinevirtual

Evaluates $C = A^{\mathrm{T}} \cdot B$ .

Parameters

B	Array to be multiplied with receiver.
answer	C.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 149 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual void oofem::SparseMtrx::times ( double x )

inlinevirtual

Multiplies receiver by scalar value.

Parameters

x	Value to multiply receiver.

Reimplemented in oofem::CompCol, oofem::SymCompCol, oofem::Skyline, oofem::DynCompCol, oofem::DynCompRow, oofem::SkylineUnsym, oofem::SpoolesSparseMtrx, and oofem::PetscSparseMtrx.

Definition at line 160 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual void oofem::SparseMtrx::timesT	(	const FloatArray &	x,
		FloatArray &	answer
	)		const

inlinevirtual

Evaluates $y = A^{\mathrm{T}} \cdot x$ .

Parameters

x	Array to be multiplied with transpose of the receiver.
answer	y.

Reimplemented in oofem::CompCol, oofem::SymCompCol, oofem::Skyline, oofem::DynCompCol, oofem::DynCompRow, oofem::SkylineUnsym, oofem::SpoolesSparseMtrx, and oofem::PetscSparseMtrx.

Definition at line 143 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual void oofem::SparseMtrx::timesT	(	const FloatMatrix &	B,
		FloatMatrix &	answer
	)		const

inlinevirtual

Evaluates $C = A^{\mathrm{T}} \cdot B$ .

Parameters

B	Matrix to be multiplied with receiver.
answer	C.

Reimplemented in oofem::PetscSparseMtrx.

Definition at line 155 of file sparsemtrx.h.

References OOFEM_ERROR.

virtual void oofem::SparseMtrx::toFloatMatrix ( FloatMatrix & answer ) const

inlinevirtual

Converts receiving sparse matrix to a dense float matrix.

Reimplemented in oofem::Skyline, oofem::CompCol, oofem::PetscSparseMtrx, and oofem::SkylineUnsym.

Definition at line 273 of file sparsemtrx.h.

References OOFEM_ERROR.

FloatArray oofem::SparseMtrx::trans_mult ( const FloatArray & x ) const

inline

IML compatibility, $A^{\mathrm{T}} \cdot x$ .

Definition at line 298 of file sparsemtrx.h.

virtual void oofem::SparseMtrx::writeToFile ( const char * fname ) const

inlinevirtual

Helpful for debugging, writes the matrix to given file.

Reimplemented in oofem::Skyline, oofem::PetscSparseMtrx, and oofem::SkylineUnsym.

Definition at line 279 of file sparsemtrx.h.

References OOFEM_LOG_INFO.

virtual void oofem::SparseMtrx::zero ( )

pure virtual

Zeroes the receiver.

Implemented in oofem::CompCol, oofem::Skyline, oofem::SymCompCol, oofem::DynCompCol, oofem::PetscSparseMtrx, oofem::DynCompRow, oofem::SkylineUnsym, and oofem::SpoolesSparseMtrx.

Referenced by oofem::MicroMaterial::giveMacroStiffnessMatrix().

Member Data Documentation

int oofem::SparseMtrx::nColumns

protected

Number of columns.

Definition at line 69 of file sparsemtrx.h.

int oofem::SparseMtrx::nRows

protected

Number of rows.

Definition at line 67 of file sparsemtrx.h.

SparseMtrxVersionType oofem::SparseMtrx::version

protected

Allows to track if receiver changes.

Any change on receiver should increment this variable. The factorization should not change version (nrsolver direct control relies on that). This version info is used for example by preconditioners associated to particular matrix; the preconditioner initialization can be demanding and this versioning allows to reuse initialized preconditioner for same matrix, if there is no change;

Definition at line 80 of file sparsemtrx.h.

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

sparsemtrx.h

Public Types

Public Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation