Incomplete Cholesky IC(0) (no fill - up) preconditioner for symmetric, positive definite matrices. More...

#include <icprecond.h>

Inheritance diagram for oofem::CompCol_ICPreconditioner:

Collaboration diagram for oofem::CompCol_ICPreconditioner:

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

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

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

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

void	initialize (const CompCol &A)

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

void	trans_solve (const FloatArray &rhs, FloatArray &solution) const
	Solves the 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	qsortRow (IntArray &, FloatArray &, int l, int r)

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

void	ICSolve (FloatArray &dest) const

void	ICFactor ()

Private Attributes
FloatArray	val_

IntArray	pntr_

IntArray	indx_

int	nz_

int	dim_ [2]

Detailed Description

Incomplete Cholesky IC(0) (no fill - up) preconditioner for symmetric, positive definite matrices.

Definition at line 44 of file icprecond.h.

Constructor & Destructor Documentation

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

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

Definition at line 38 of file icprecond.C.

oofem::CompCol_ICPreconditioner::CompCol_ICPreconditioner ( )

inline

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

Definition at line 57 of file icprecond.h.

virtual oofem::CompCol_ICPreconditioner::~CompCol_ICPreconditioner ( void )

inlinevirtual

Destructor.

Definition at line 59 of file icprecond.h.

Member Function Documentation

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

inlinevirtual

Returns the preconditioner name.

Reimplemented from oofem::Preconditioner.

Definition at line 68 of file icprecond.h.

void oofem::CompCol_ICPreconditioner::ICFactor ( )

protected

Definition at line 129 of file icprecond.C.

References oofem::IntArray::giveSize(), indx_, pntr_, and val_.

Referenced by initialize().

void oofem::CompCol_ICPreconditioner::ICSolve ( FloatArray & dest ) const

protected

Definition at line 163 of file icprecond.C.

References oofem::FloatArray::giveSize(), indx_, pntr_, val_, and oofem::FloatArray::zero().

Referenced by solve(), and trans_solve().

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

virtual

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 49 of file icprecond.C.

References initialize(), and OOFEM_ERROR.

void oofem::CompCol_ICPreconditioner::initialize ( const CompCol & A )

Definition at line 64 of file icprecond.C.

References oofem::CompCol::col_ptr(), oofem::CompCol::dim(), dim_, ICFactor(), indx_, nz_, OOFEM_ERROR, pntr_, oofem::IntArray::resize(), oofem::FloatArray::resize(), oofem::CompCol::row_ind(), oofem::CompCol::val(), and val_.

Referenced by init().

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

virtual

Initializes receiver from given record. Empty implementation.

Reimplemented from oofem::Preconditioner.

Definition at line 43 of file icprecond.C.

References oofem::Preconditioner::initializeFrom().

void oofem::CompCol_ICPreconditioner::qsortRow	(	IntArray &	src,
		FloatArray &	val,
		int	l,
		int	r
	)

protected

Definition at line 192 of file icprecond.C.

References qsortRowPartition().

int oofem::CompCol_ICPreconditioner::qsortRowPartition	(	IntArray &	src,
		FloatArray &	val,
		int	l,
		int	r
	)

protected

Definition at line 205 of file icprecond.C.

Referenced by qsortRow().

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

virtual

Solves the linear system.

Parameters

rhs	Right hand side.
solution	Solution.

Implements oofem::Preconditioner.

Definition at line 113 of file icprecond.C.

References ICSolve().

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

virtual

Solves the transposed system.

Parameters

rhs	Right hand side.
solution	Solution.

Implements oofem::Preconditioner.

Definition at line 121 of file icprecond.C.

References ICSolve().

Member Data Documentation

int oofem::CompCol_ICPreconditioner::dim_[2]

private

Definition at line 51 of file icprecond.h.

Referenced by initialize().

IntArray oofem::CompCol_ICPreconditioner::indx_

private

Definition at line 49 of file icprecond.h.

Referenced by ICFactor(), ICSolve(), and initialize().

int oofem::CompCol_ICPreconditioner::nz_

private

Definition at line 50 of file icprecond.h.

Referenced by initialize().

IntArray oofem::CompCol_ICPreconditioner::pntr_

private

Definition at line 48 of file icprecond.h.

Referenced by ICFactor(), ICSolve(), and initialize().

FloatArray oofem::CompCol_ICPreconditioner::val_

private

Definition at line 47 of file icprecond.h.

Referenced by ICFactor(), ICSolve(), and initialize().

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