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DenseSubmatrix Class Template Reference
[linbox/matrix]

#include <dense-submatrix.h>

Inheritance diagram for DenseSubmatrix:

List of all members.

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Detailed Description

template<class _Element>
class LinBox::DenseSubmatrix< _Element >

Submatrix of a dense matrix

This matrix type conforms to the same interface as @ref{DenseMatrixBase}, except that you cannot resize it. It represents a submatrix of a dense matrix. Upon construction, one can freely manipulate the entries in the DenseSubmatrix, and the corresponding entries in the underlying DenseMatrixBase will be modified.

Public Types
typedef _Element	Element
typedef DenseSubmatrix< _Element >	Self_t
typedef DenseMatrixBase< Element >::RowIterator	RowIterator
typedef DenseMatrixBase< Element >::ConstRowIterator	ConstRowIterator
typedef DenseMatrixBase< Element >::Row	Row
typedef DenseMatrixBase< Element >::ConstRow	ConstRow
typedef DenseMatrixBase< Element >::ColIterator	ColIterator
typedef DenseMatrixBase< Element >::ConstColIterator	ConstColIterator
typedef DenseMatrixBase< Element >::Col	Col
typedef DenseMatrixBase< Element >::Column	Column
typedef DenseMatrixBase< Element >::ConstCol	ConstCol
typedef const RawIndexedIterator	ConstRawIndexedIterator
Public Methods
	DenseSubmatrix ()
	DenseSubmatrix (DenseMatrixBase< Element > &M, size_t row, size_t col, size_t rowdim, size_t coldim)
	DenseSubmatrix (const DenseSubmatrix< Element > &SM, size_t row, size_t col, size_t rowdim, size_t coldim)
	DenseSubmatrix (const DenseSubmatrix< Element > &SM)
DenseSubmatrix &	operator= (const DenseSubmatrix< Element > &SM)
size_t	rowdim () const
size_t	coldim () const
template<class Field> std::istream &	read (std::istream &file, const Field &field)
template<class Field> std::ostream &	write (std::ostream &os, const Field &field, bool mapleFormat=false) const
void	setEntry (size_t i, size_t j, const Element &a_ij)
Element &	refEntry (size_t i, size_t j)
const Element &	getEntry (size_t i, size_t j) const
Element &	getEntry (Element &x, size_t i, size_t j)
RowIterator	rowBegin ()
RowIterator	rowEnd ()
ConstRowIterator	rowBegin () const
ConstRowIterator	rowEnd () const
ColIterator	colBegin ()
ColIterator	colEnd ()
ConstColIterator	colBegin () const
ConstColIterator	colEnd () const
RawIterator	rawBegin ()
RawIterator	rawEnd ()
ConstRawIterator	rawBegin () const
ConstRawIterator	rawEnd () const
RawIndexedIterator	rawIndexBegin ()
RawIndexedIterator	rawIndexEnd ()
ConstRawIndexedIterator	rawIndexBegin () const
ConstRawIndexedIterator	rawIndexEnd () const
Protected Attributes
DenseMatrixBase< Element > *	_M
size_t	_beg_row
size_t	_end_row
size_t	_beg_col
size_t	_end_col

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Member Typedef Documentation

typedef DenseMatrixBase<Element>::Col Col

typedef DenseMatrixBase<Element>::ColIterator ColIterator

The columns iterator gives the columns of the matrix in ascending order. Dereferencing the iterator yields a column vector in dense format

typedef DenseMatrixBase<Element>::Column Column

typedef DenseMatrixBase<Element>::ConstCol ConstCol

typedef DenseMatrixBase<Element>::ConstColIterator ConstColIterator

typedef const RawIndexedIterator ConstRawIndexedIterator

typedef DenseMatrixBase<Element>::ConstRow ConstRow

typedef DenseMatrixBase<Element>::ConstRowIterator ConstRowIterator

typedef _Element Element

Reimplemented in BlasBlackbox, Submatrix< DenseMatrix< _Field >, VectorCategories::DenseVectorTag >, BlasMatrix, BlasMatrix< Element >, BlasMatrix< Domain::Element >, and BlasMatrix< _Field::Element >.

typedef DenseMatrixBase<Element>::Row Row

typedef DenseMatrixBase<Element>::RowIterator RowIterator

The row iterator gives the rows of the matrix in ascending order. Dereferencing the iterator yields a row vector in dense format

typedef DenseSubmatrix<_Element> Self_t

Reimplemented in BlasBlackbox.

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Constructor & Destructor Documentation

DenseSubmatrix (    )  [inline]

DenseSubmatrix (  DenseMatrixBase< Element > &    M, size_t    row, size_t    col, size_t    rowdim, size_t    coldim )

Constructor from an existing @ref{DenseMatrixBase} and dimensions Parameters: M  Pointer to @ref{DenseMatrixBase} of which to construct submatrix row  Starting row col  Starting column rowdim  Row dimension coldim  Column dimension

DenseSubmatrix (  const DenseSubmatrix< Element > &    SM, size_t    row, size_t    col, size_t    rowdim, size_t    coldim )

Constructor from an existing submatrix and dimensions Parameters: SM  Constant reference to DenseSubmatrix from which to construct submatrix row  Starting row col  Starting column rowdim  Row dimension coldim  Column dimension

DenseSubmatrix (  const DenseSubmatrix< Element > &    SM )

Copy constructor Parameters: _M  Submatrix to copy

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Member Function Documentation

ConstColIterator colBegin (    )

ColIterator colBegin (    )

size_t coldim (    )  const [inline]

Get the number of columns in the matrix Returns: Number of columns in matrix Reimplemented in BlasBlackbox.

ConstColIterator colEnd (    )

ColIterator colEnd (    )

Element& getEntry (  Element &    x, size_t    i, size_t    j )  [inline]

Get an entry and store it in the given value This form is more in the Linbox style and is provided for interface compatibility with other parts of the library Parameters: x  Element in which to store result i  Row index j  Column index Returns: Reference to x

const Element& getEntry (  size_t    i, size_t    j )  const [inline]

Get a read-only individual entry from the matrix Parameters: i  Row index j  Column index Returns: Const reference to matrix entry

DenseSubmatrix& operator= (  const DenseSubmatrix< Element > &    SM )

Assignment operator Assign the given submatrix to this one Parameters: _M  Submatrix to assign Returns: Reference to this submatrix

ConstRawIterator rawBegin (    )

RawIterator rawBegin (    )

ConstRawIterator rawEnd (    )

RawIterator rawEnd (    )

ConstRawIndexedIterator rawIndexBegin (    )

RawIndexedIterator rawIndexBegin (    )

ConstRawIndexedIterator rawIndexEnd (    )

RawIndexedIterator rawIndexEnd (    )

std::istream& read (  std::istream &    file, const Field &    field )

Read the matrix from an input stream Parameters: file  Input stream from which to read field

Element& refEntry (  size_t    i, size_t    j )  [inline]

Get a writeable reference to an entry in the matrix Parameters: i  Row index of entry j  Column index of entry Returns: Reference to matrix entry

ConstRowIterator rowBegin (    )

RowIterator rowBegin (    )

size_t rowdim (    )  const [inline]

Get the number of rows in the matrix Returns: Number of rows in matrix Reimplemented in BlasBlackbox.

ConstRowIterator rowEnd (    )

RowIterator rowEnd (    )

void setEntry (  size_t    i, size_t    j, const Element &    a_ij )  [inline]

Set the entry at (i, j) Parameters: i  Row number, 0...rowdim () - 1 j  Column number 0...coldim () - 1 a_ij  Element to set

std::ostream& write (  std::ostream &    os, const Field &    field, bool    mapleFormat = false )  const

Write the matrix to an output stream Parameters: os  Output stream to which to write field

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Member Data Documentation

size_t _beg_col [protected]

size_t _beg_row [protected]

size_t _end_col [protected]

size_t _end_row [protected]

DenseMatrixBase<Element>* _M [protected]

Retrieve a reference to a row Parameters: i  Row index

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