BlockDiagonalMatrix< MatrixType > Class Template Reference

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

Inheritance diagram for BlockDiagonalMatrix< MatrixType >:

Public Member Functions
	BlockDiagonalMatrix (const MatrixType &M, const unsigned int n_blocks)
template<typename number1 , typename number2 >
void	vmult (BlockVector< number1 > &dst, const BlockVector< number2 > &src) const
template<typename number1 , typename number2 >
void	Tvmult (BlockVector< number1 > &dst, const BlockVector< number2 > &src) const
Public Member Functions inherited from Subscriptor
	Subscriptor ()
	Subscriptor (const Subscriptor &)
	Subscriptor (Subscriptor &&)
virtual	~Subscriptor ()
Subscriptor &	operator= (const Subscriptor &)
Subscriptor &	operator= (Subscriptor &&)
void	subscribe (const char *identifier=0) const
void	unsubscribe (const char *identifier=0) const
unsigned int	n_subscriptions () const
void	list_subscribers () const
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Private Attributes
unsigned int	num_blocks
SmartPointer< const MatrixType, BlockDiagonalMatrix< MatrixType > >	matrix

Additional Inherited Members
Static Public Member Functions inherited from Subscriptor
static ::ExceptionBase &	ExcInUse (int arg1, char *arg2, std::string &arg3)
static ::ExceptionBase &	ExcNoSubscriber (char *arg1, char *arg2)

Detailed Description

template<typename MatrixType>
class BlockDiagonalMatrix< MatrixType >

A matrix with several copies of the same block on the diagonal.

This matrix implements an m by m block matrix. Each diagonal block consists of the same (non-block) matrix, while off-diagonal blocks are void.

One special application is a one by one block matrix, allowing to apply the vmult of the original matrix (or preconditioner) to a block vector.

Deprecated:

If deal.II was configured with C++11 support, use the LinearOperator class instead, see the module on linear operators for further details.

See also

Block (linear algebra)

Author

Guido Kanschat, 2000

Definition at line 51 of file block_matrix.h.

Constructor & Destructor Documentation

BlockDiagonalMatrix()

template<typename MatrixType >

BlockDiagonalMatrix< MatrixType >::BlockDiagonalMatrix	(	const MatrixType &	M,
		const unsigned int	n_blocks
	)

Constructor for an n_blocks by n_blocks matrix with diagonal blocks M.

Definition at line 90 of file block_matrix.h.

Member Function Documentation

vmult()

template<typename MatrixType >

template<typename number1 , typename number2 >

void BlockDiagonalMatrix< MatrixType >::vmult	(	BlockVector< number1 > &	dst,
		const BlockVector< number2 > &	src
	)		const

Matrix-vector-multiplication.

Definition at line 101 of file block_matrix.h.

Tvmult()

template<typename MatrixType >

template<typename number1 , typename number2 >

void BlockDiagonalMatrix< MatrixType >::Tvmult	(	BlockVector< number1 > &	dst,
		const BlockVector< number2 > &	src
	)		const

Transposed matrix-vector-multiplication.

Definition at line 117 of file block_matrix.h.

Member Data Documentation

num_blocks

template<typename MatrixType >

unsigned int BlockDiagonalMatrix< MatrixType >::num_blocks

private

Number of blocks.

Definition at line 78 of file block_matrix.h.

matrix

template<typename MatrixType >

SmartPointer<const MatrixType,BlockDiagonalMatrix<MatrixType> > BlockDiagonalMatrix< MatrixType >::matrix

private

Diagonal entry.

Definition at line 83 of file block_matrix.h.

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

• deal.II/lac/block_matrix.h