ChunkSparseMatrixIterators::Accessor< number, true > Class Template Reference

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

Inheritance diagram for ChunkSparseMatrixIterators::Accessor< number, true >:

Public Types
using	MatrixType = const ChunkSparseMatrix<number>
using	size_type = types::global_dof_index

Public Member Functions
	Accessor (MatrixType *matrix, const unsigned int row)
	Accessor (MatrixType *matrix)
	Accessor (const ChunkSparseMatrixIterators::Accessor< number, false > &a)
number	value () const
const MatrixType &	get_matrix () const
size_type	row () const
std::size_t	reduced_index () const
size_type	column () const
bool	is_valid_entry () const
bool	operator== (const Accessor &) const
bool	operator< (const Accessor &) const

Protected Member Functions
void	advance ()

Protected Attributes
const ChunkSparsityPattern *	sparsity_pattern
SparsityPatternIterators::Accessor	reduced_accessor
size_type	chunk_row
size_type	chunk_col

Private Attributes
MatrixType *	matrix

Friends
template<typename , bool >
class	Iterator

Detailed Description

template<typename number>
class ChunkSparseMatrixIterators::Accessor< number, true >

Accessor class for constant matrices, used in the const_iterators. This class builds on the accessor classes used for sparsity patterns to loop over all nonzero entries, and only adds the accessor functions to gain access to the actual value stored at a certain location.

Definition at line 100 of file chunk_sparse_matrix.h.

Member Typedef Documentation

MatrixType

template<typename number >

using ChunkSparseMatrixIterators::Accessor< number, true >::MatrixType = const ChunkSparseMatrix<number>

Typedef for the type (including constness) of the matrix to be used here.

Definition at line 107 of file chunk_sparse_matrix.h.

size_type

using ChunkSparsityPatternIterators::Accessor::size_type = types::global_dof_index

inherited

Declare the type for container size.

Definition at line 68 of file chunk_sparsity_pattern.h.

Constructor & Destructor Documentation

Accessor() [1/3]

template<typename number >

ChunkSparseMatrixIterators::Accessor< number, true >::Accessor	(	MatrixType *	matrix,
		const unsigned int	row )

Constructor.

Accessor() [2/3]

template<typename number >

ChunkSparseMatrixIterators::Accessor< number, true >::Accessor

(

MatrixType *

matrix

)

Constructor. Construct the end accessor for the given matrix.

Accessor() [3/3]

template<typename number >

ChunkSparseMatrixIterators::Accessor< number, true >::Accessor

(

const ChunkSparseMatrixIterators::Accessor< number, false > &

a

)

Copy constructor to get from a non-const accessor to a const accessor.

Member Function Documentation

value()

template<typename number >

number ChunkSparseMatrixIterators::Accessor< number, true >::value

(

)

const

Value of this matrix entry.

get_matrix()

template<typename number >

const MatrixType & ChunkSparseMatrixIterators::Accessor< number, true >::get_matrix

(

)

const

Return a reference to the matrix into which this accessor points. Note that in the present case, this is a constant reference.

row()

size_type ChunkSparsityPatternIterators::Accessor::row ( ) const

inherited

Row number of the element represented by this object. This function can only be called for entries for which is_valid_entry() is true.

reduced_index()

std::size_t ChunkSparsityPatternIterators::Accessor::reduced_index ( ) const

inherited

Return the global index from the reduced sparsity pattern.

column()

size_type ChunkSparsityPatternIterators::Accessor::column ( ) const

inherited

Column number of the element represented by this object. This function can only be called for entries for which is_valid_entry() is true.

is_valid_entry()

bool ChunkSparsityPatternIterators::Accessor::is_valid_entry ( ) const

inherited

Return whether the sparsity pattern entry pointed to by this iterator is valid or not. Note that after compressing the sparsity pattern, all entries are valid. However, before compression, the sparsity pattern allocated some memory to be used while still adding new nonzero entries; if you create iterators in this phase of the sparsity pattern's lifetime, you will iterate over elements that are not valid. If this is so, then this function will return false.

operator==()

bool ChunkSparsityPatternIterators::Accessor::operator== ( const Accessor & ) const

inherited

Comparison. True, if both iterators point to the same matrix position.

operator<()

bool ChunkSparsityPatternIterators::Accessor::operator< ( const Accessor & ) const

inherited

Comparison operator. Result is true if either the first row number is smaller or if the row numbers are equal and the first index is smaller.

This function is only valid if both iterators point into the same sparsity pattern.

advance()

void ChunkSparsityPatternIterators::Accessor::advance ( )

protectedinherited

Move the accessor to the next nonzero entry in the matrix.

Friends And Related Symbol Documentation

Iterator

template<typename number >

template<typename , bool >

friend class Iterator

friend

Definition at line 150 of file chunk_sparse_matrix.h.

Member Data Documentation

matrix

template<typename number >

MatrixType* ChunkSparseMatrixIterators::Accessor< number, true >::matrix

private

Pointer to the matrix we use.

Definition at line 141 of file chunk_sparse_matrix.h.

sparsity_pattern

const ChunkSparsityPattern* ChunkSparsityPatternIterators::Accessor::sparsity_pattern

protectedinherited

The sparsity pattern we operate on accessed.

Definition at line 134 of file chunk_sparsity_pattern.h.

reduced_accessor

SparsityPatternIterators::Accessor ChunkSparsityPatternIterators::Accessor::reduced_accessor

protectedinherited

The accessor of the (reduced) sparsity pattern.

Definition at line 139 of file chunk_sparsity_pattern.h.

chunk_row

size_type ChunkSparsityPatternIterators::Accessor::chunk_row

protectedinherited

Current chunk row number.

Definition at line 144 of file chunk_sparsity_pattern.h.

chunk_col

size_type ChunkSparsityPatternIterators::Accessor::chunk_col

protectedinherited

Current chunk col number.

Definition at line 149 of file chunk_sparsity_pattern.h.

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

• include/deal.II/lac/chunk_sparse_matrix.h