Dune::MatrixIndexSet Class Reference

Stores the nonzero entries in a sparse matrix. More...

#include <dune/istl/matrixindexset.hh>

Public Types
typedef std::size_t	size_type

Public Member Functions
	MatrixIndexSet ()
	Default constructor. More...
	MatrixIndexSet (size_type rows, size_type cols)
	Constructor setting the matrix size. More...
void	resize (size_type rows, size_type cols)
	Reset the size of an index set. More...
void	add (size_type i, size_type j)
	Add an index to the index set. More...
size_type	size () const
	Return the number of entries. More...
size_type	rows () const
	Return the number of rows. More...
size_type	rowsize (size_type row) const
	Return the number of entries in a given row. More...
template<class MatrixType >
void	import (const MatrixType &m, size_type rowOffset=0, size_type colOffset=0)
	Import all nonzero entries of a sparse matrix into the index set. More...
template<class MatrixType >
void	exportIdx (MatrixType &matrix) const
	Initializes a BCRSMatrix with the indices contained in this MatrixIndexSet. More...

Detailed Description

Stores the nonzero entries in a sparse matrix.

Member Typedef Documentation

size_type

typedef std::size_t Dune::MatrixIndexSet::size_type

Constructor & Destructor Documentation

MatrixIndexSet() [1/2]

Dune::MatrixIndexSet::MatrixIndexSet ( )

inline

Default constructor.

MatrixIndexSet() [2/2]

Dune::MatrixIndexSet::MatrixIndexSet ( size_type  rows, size_type  cols  )

inline

Constructor setting the matrix size.

Member Function Documentation

add()

void Dune::MatrixIndexSet::add ( size_type  i, size_type  j  )

inline

Add an index to the index set.

exportIdx()

template<class MatrixType >

void Dune::MatrixIndexSet::exportIdx ( MatrixType &  matrix ) const

inline

Initializes a BCRSMatrix with the indices contained in this MatrixIndexSet.

Template Parameters

MatrixType

Needs to be BCRSMatrix<...>

Parameters

matrix

reference to the MatrixType object

import()

template<class MatrixType >

void Dune::MatrixIndexSet::import ( const MatrixType &  m, size_type  rowOffset = 0, size_type  colOffset = 0  )

inline

Import all nonzero entries of a sparse matrix into the index set.

Template Parameters

MatrixType

Needs to be BCRSMatrix<...>

Parameters

m	reference to the MatrixType object
rowOffset	don't write to rows<rowOffset
colOffset	don't write to cols<colOffset

resize()

void Dune::MatrixIndexSet::resize ( size_type  rows, size_type  cols  )

inline

Reset the size of an index set.

rows()

size_type Dune::MatrixIndexSet::rows ( ) const

inline

Return the number of rows.

rowsize()

size_type Dune::MatrixIndexSet::rowsize ( size_type  row ) const

inline

Return the number of entries in a given row.

size()

size_type Dune::MatrixIndexSet::size ( ) const

inline

Return the number of entries.

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

• matrixindexset.hh