Implemantation of ILU (Incomplete LU) Preconditioner for compressed row sparse matrices. More...

#include <ilucomprowprecond.h>

Inheritance diagram for oofem::CompRow_ILUPreconditioner:

Collaboration diagram for oofem::CompRow_ILUPreconditioner:

Public Member Functions
	CompRow_ILUPreconditioner (const SparseMtrx &A, InputRecord &attributes)
	Constructor. Initializes the the receiver (constructs the precontioning matrix M) of given matrix. More...

	CompRow_ILUPreconditioner ()
	Constructor. The user should call initializeFrom and init services in this given order to ensure consistency. More...

virtual	~CompRow_ILUPreconditioner (void)
	Destructor. More...

virtual void	init (const SparseMtrx &a)
	Initializes the receiver (constructs the precontioning matrix M) of given matrix. More...

void	initialize (const DynCompRow &A)

virtual void	solve (const FloatArray &x, FloatArray &y) const
	Solves the linear system. More...

virtual void	trans_solve (const FloatArray &x, FloatArray &y) const
	Solves transposed system. More...

virtual const char *	giveClassName () const
	returns the preconditioner name More...

virtual IRResultType	initializeFrom (InputRecord *ir)
	Initializes receiver from given record. Empty implementation. More...

Public Member Functions inherited from oofem::Preconditioner
	Preconditioner (const SparseMtrx &a, InputRecord &attributes)
	Constructor. More...

	Preconditioner ()
	Constructor. More...

virtual	~Preconditioner (void)
	Destructor. More...

FloatArray	solve (const FloatArray &rhs) const
	Solves the linear system. More...

FloatArray	trans_solve (const FloatArray &rhs) const
	Solves transposed system. More...

Protected Member Functions
void	qsortCol (IntArray &, FloatArray &, int l, int r)

int	qsortColPartition (IntArray &, FloatArray &, int l, int r)

Private Attributes
DynCompRow	A

double	drop_tol

int	part_fill

Detailed Description

Implemantation of ILU (Incomplete LU) Preconditioner for compressed row sparse matrices.

Fill - up supported.

Definition at line 55 of file ilucomprowprecond.h.

Constructor & Destructor Documentation

oofem::CompRow_ILUPreconditioner::CompRow_ILUPreconditioner	(	const SparseMtrx &	A,
		InputRecord &	attributes
	)

Constructor. Initializes the the receiver (constructs the precontioning matrix M) of given matrix.

Definition at line 41 of file ilucomprowprecond.C.

oofem::CompRow_ILUPreconditioner::CompRow_ILUPreconditioner ( )

inline

Constructor. The user should call initializeFrom and init services in this given order to ensure consistency.

Definition at line 67 of file ilucomprowprecond.h.

virtual oofem::CompRow_ILUPreconditioner::~CompRow_ILUPreconditioner ( void )

inlinevirtual

Destructor.

Definition at line 69 of file ilucomprowprecond.h.

Member Function Documentation

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

inlinevirtual

returns the preconditioner name

Reimplemented from oofem::Preconditioner.

Definition at line 86 of file ilucomprowprecond.h.

void oofem::CompRow_ILUPreconditioner::init ( const SparseMtrx & a )

virtual

Initializes the receiver (constructs the precontioning matrix M) of given matrix.

Parameters

a	Sparse matrix to be preconditioned

Reimplemented from oofem::Preconditioner.

Definition at line 60 of file ilucomprowprecond.C.

References A, drop_tol, OOFEM_ERROR, and part_fill.

void oofem::CompRow_ILUPreconditioner::initialize ( const DynCompRow & A )

IRResultType oofem::CompRow_ILUPreconditioner::initializeFrom ( InputRecord * ir )

virtual

Initializes receiver from given record. Empty implementation.

Reimplemented from oofem::Preconditioner.

Definition at line 45 of file ilucomprowprecond.C.

References _IFT_CompRow_ILUPrecond_droptol, _IFT_CompRow_ILUPrecond_partfill, drop_tol, oofem::Preconditioner::initializeFrom(), IR_GIVE_OPTIONAL_FIELD, and part_fill.

void oofem::CompRow_ILUPreconditioner::qsortCol	(	IntArray &	,
		FloatArray &	,
		int	l,
		int	r
	)

protected

int oofem::CompRow_ILUPreconditioner::qsortColPartition	(	IntArray &	,
		FloatArray &	,
		int	l,
		int	r
	)

protected

void oofem::CompRow_ILUPreconditioner::solve	(	const FloatArray &	x,
		FloatArray &	y
	)		const

virtual

Solves the linear system.

Implements oofem::Preconditioner.

Definition at line 71 of file ilucomprowprecond.C.

References A, and oofem::DynCompRow::ILUPsolve().

void oofem::CompRow_ILUPreconditioner::trans_solve	(	const FloatArray &	x,
		FloatArray &	y
	)		const

virtual

Solves transposed system.

Implements oofem::Preconditioner.

Definition at line 78 of file ilucomprowprecond.C.

References A, and oofem::DynCompRow::ILUPtrans_solve().

Member Data Documentation

DynCompRow oofem::CompRow_ILUPreconditioner::A

private

Definition at line 58 of file ilucomprowprecond.h.

Referenced by init(), solve(), and trans_solve().

double oofem::CompRow_ILUPreconditioner::drop_tol

private

Definition at line 60 of file ilucomprowprecond.h.

Referenced by init(), and initializeFrom().

int oofem::CompRow_ILUPreconditioner::part_fill

private

Definition at line 61 of file ilucomprowprecond.h.

Referenced by init(), and initializeFrom().

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

Public Member Functions

Protected Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation