LexILUPrecond< T > Class Template Reference

Template for the ILU_omega preconditioners for SparseMatrix<T> -matrices. More...

#include <LexILU.hpp>

Inheritance diagram for LexILUPrecond< T >:

[legend]Collaboration diagram for LexILUPrecond< T >:


Public Member Functions
void	PrintParam ()
	Prints the name of the preconditioner.
void	PreProcess (void *&context, SparseMatrix< T > &A)
	Creates the preconditioner matrices.
void	Run (void *&context, MultiVector< T > &r, MultiVector< T > &c)
	Applies the preconditioner to a given vector 'r', i.e. computes $c \leftarrow W^{-1} \cdot r$ .
void	PostProcess (void *&context)
	Releases the information referenced by the context.
	LexILUPrecond (unsigned the_disp_type, T the_omega=0)

Detailed Description

template<typename T>
class LexILUPrecond< T >

Template for the ILU_omega preconditioners for SparseMatrix<T> -matrices.

This version uses the lexicographical ordering of the grid points. The templates depend on a type T. This type should satisfy the conditions listed in small_matrix.hpp for small matrices.

Date:: Feb. 15, 2005 - created

Constructor & Destructor Documentation

template<typename T>

LexILUPrecond< T >::LexILUPrecond	(	unsigned	the_disp_type,
		T	the_omega = `0`
	)			`[inline]`

Member Function Documentation

template<typename T>

void LexILUPrecond< T >::PrintParam ( ) [inline, virtual]

Prints the name of the preconditioner.

Implements SysPrecond< T >.

template<typename T>

void LexILUPrecond< T >::PreProcess	(	void *&	context,
		SparseMatrix< T > &	A
	)			`[inline, virtual]`

Creates the preconditioner matrices.

These matrices are saved in one SparseMatrix<T>-structure: The upper diagonal part is $U$ , the lower-diagonal one is $L$ and the diagonal blocks represent $T^{-1}$ . The context stores a pointer to this structure