oofem::CompRow_ILUPreconditioner Class Reference

#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.
	CompRow_ILUPreconditioner ()
	Constructor. The user should call initializeFrom and init services in this given order to ensure consistency.
virtual	~CompRow_ILUPreconditioner (void)
	Destructor.
void	init (const SparseMtrx &a) override
void	initialize (const DynCompRow &A)
void	solve (const FloatArray &x, FloatArray &y) const override
void	trans_solve (const FloatArray &x, FloatArray &y) const override
const char *	giveClassName () const override
	Returns the preconditioner name.
void	initializeFrom (InputRecord &ir) override
	Initializes receiver from given record. Empty implementation.
Public Member Functions inherited from oofem::Preconditioner
	Preconditioner (const SparseMtrx &a, InputRecord &attributes)
	Preconditioner ()
virtual	~Preconditioner (void)
	Destructor.
FloatArray	solve (const FloatArray &rhs) const
FloatArray	trans_solve (const FloatArray &rhs) const

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

CompRow_ILUPreconditioner() [1/2]

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 40 of file ilucomprowprecond.C.

References A, and oofem::Preconditioner::Preconditioner().

CompRow_ILUPreconditioner() [2/2]

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.

References oofem::Preconditioner::Preconditioner().

~CompRow_ILUPreconditioner()

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

inlinevirtual

Destructor.

Definition at line 69 of file ilucomprowprecond.h.

Member Function Documentation

giveClassName()

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

inlineoverridevirtual

Returns the preconditioner name.

Reimplemented from oofem::Preconditioner.

Definition at line 79 of file ilucomprowprecond.h.

init()

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

overridevirtual

Initializes the receiver (constructs the preconditioning matrix M) of given matrix. Virtual service, to be implemented by derived classes. Should be called after initializeFrom service.

Parameters

a	Sparse matrix to be preconditioned.

Reimplemented from oofem::Preconditioner.

Definition at line 57 of file ilucomprowprecond.C.

References A, drop_tol, OOFEM_ERROR, and part_fill.

initialize()

void oofem::CompRow_ILUPreconditioner::initialize

(

const DynCompRow &

A

)

References A, solve(), and trans_solve().

initializeFrom()

void oofem::CompRow_ILUPreconditioner::initializeFrom ( InputRecord & ir )

overridevirtual

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, IR_GIVE_OPTIONAL_FIELD, and part_fill.

qsortCol()

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

protected

qsortColPartition()

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

protected

solve()

void oofem::CompRow_ILUPreconditioner::solve ( const FloatArray & rhs, FloatArray & solution ) const

overridevirtual

Solves the linear system.

Parameters

rhs	Right hand side.
solution	Solution.

Implements oofem::Preconditioner.

Definition at line 69 of file ilucomprowprecond.C.

References A.

Referenced by initialize().

trans_solve()

void oofem::CompRow_ILUPreconditioner::trans_solve ( const FloatArray & rhs, FloatArray & solution ) const

overridevirtual

Solves the transposed system.

Parameters

rhs	Right hand side.
solution	Solution.

Implements oofem::Preconditioner.

Definition at line 76 of file ilucomprowprecond.C.

References A.

Referenced by initialize().

Member Data Documentation

A

DynCompRow oofem::CompRow_ILUPreconditioner::A

private

Definition at line 58 of file ilucomprowprecond.h.

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

drop_tol

double oofem::CompRow_ILUPreconditioner::drop_tol

private

Definition at line 60 of file ilucomprowprecond.h.

Referenced by init(), and initializeFrom().

part_fill

int oofem::CompRow_ILUPreconditioner::part_fill

private

Definition at line 61 of file ilucomprowprecond.h.

Referenced by init(), and initializeFrom().

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

• ilucomprowprecond.h
• ilucomprowprecond.C