PreconditionBlock< MatrixType, inverse_type >::AdditionalData Class Reference

#include <deal.II/lac/precondition_block.h>

Public Member Functions
	AdditionalData (const size_type block_size, const double relaxation=1., const bool invert_diagonal=true, const bool same_diagonal=false)

Public Attributes
double	relaxation
size_type	block_size
bool	invert_diagonal
bool	same_diagonal
PreconditionBlockBase< inverse_type >::Inversion	inversion
double	threshold

Detailed Description

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>
class PreconditionBlock< MatrixType, inverse_type >::AdditionalData

Parameters for block preconditioners.

Definition at line 107 of file precondition_block.h.

Constructor & Destructor Documentation

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

PreconditionBlock< MatrixType, inverse_type >::AdditionalData::AdditionalData	(	const size_type	block_size,
		const double	relaxation = 1.,
		const bool	invert_diagonal = true,
		const bool	same_diagonal = false
	)

Constructor. Block size must be given since there is no reasonable default parameter.

Member Data Documentation

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

double PreconditionBlock< MatrixType, inverse_type >::AdditionalData::relaxation

Relaxation parameter.

Definition at line 122 of file precondition_block.h.

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

size_type PreconditionBlock< MatrixType, inverse_type >::AdditionalData::block_size

Block size.

Definition at line 127 of file precondition_block.h.

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

bool PreconditionBlock< MatrixType, inverse_type >::AdditionalData::invert_diagonal

Invert diagonal during initialization.

Definition at line 132 of file precondition_block.h.

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

bool PreconditionBlock< MatrixType, inverse_type >::AdditionalData::same_diagonal

Assume all diagonal blocks are equal to save memory.

Definition at line 137 of file precondition_block.h.

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

PreconditionBlockBase<inverse_type>::Inversion PreconditionBlock< MatrixType, inverse_type >::AdditionalData::inversion

Choose the inversion method for the blocks.

Definition at line 141 of file precondition_block.h.

template<typename MatrixType, typename inverse_type = typename MatrixType::value_type>

double PreconditionBlock< MatrixType, inverse_type >::AdditionalData::threshold

The if inversion is SVD, the threshold below which a singular value will be considered zero and thus not inverted. This parameter is used in the call to LAPACKFullMatrix::compute_inverse_svd().

Definition at line 148 of file precondition_block.h.

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

• deal.II/lac/precondition_block.h