Dune::VariableBlockVector< B, A > Class Template Reference

A Vector of blocks with different blocksizes. More...

#include <dune/istl/vbvector.hh>

Classes
class	CreateIterator
	Iterator class for sequential creation of blocks. More...
class	RealIterator
	Iterator class for sequential access. More...

Public Types
enum	{ blocklevel = B::blocklevel+2 }
typedef B::field_type	field_type
	export the type representing the field
typedef A	allocator_type
	export the allocator type
typedef window_type &	reference
	Export type used for references to container entries. More...
typedef const window_type &	const_reference
	Export type used for const references to container entries. More...
typedef A::size_type	size_type
	The size type for the index access.
typedef BlockVector< B, A >	value_type
	Type of the elements of the outer vector, i.e., dynamic vectors of B. More...
typedef BlockVector< B, A >	block_type
	Same as value_type, here for historical reasons.
using	iterator = Iterator
	Export the iterator type using std naming rules.
using	ConstIterator = RealIterator< const value_type, const window_type & >
	Const iterator.
using	const_iterator = ConstIterator
	Export the const iterator type using std naming rules.
typedef B	member_type
	export the type representing the components

Public Member Functions
	VariableBlockVector ()
	VariableBlockVector (size_type _nblocks)
	VariableBlockVector (size_type _nblocks, size_type m)
	VariableBlockVector (const VariableBlockVector &a)
	copy constructor, has copy semantics
	~VariableBlockVector ()
	free dynamic memory
void	resize (size_type _nblocks)
	same effect as constructor with same argument
void	resize (size_type _nblocks, size_type m)
	same effect as constructor with same argument
VariableBlockVector &	operator= (const VariableBlockVector &a)
	assignment
VariableBlockVector &	operator= (const field_type &k)
	assign from scalar
CreateIterator	createbegin ()
	get initial create iterator
CreateIterator	createend ()
	get create iterator pointing to one after the last block
window_type &	operator[] (size_type i)
	random access to blocks
const window_type &	operator[] (size_type i) const
	same for read only access
Iterator	begin ()
	begin Iterator
Iterator	end ()
	end Iterator
Iterator	beforeEnd ()
Iterator	beforeBegin () const
ConstIterator	begin () const
	begin ConstIterator
ConstIterator	end () const
	end ConstIterator
ConstIterator	beforeEnd () const
ConstIterator	rend () const
	end ConstIterator
Iterator	find (size_type i)
	random access returning iterator (end if not contained)
ConstIterator	find (size_type i) const
	random access returning iterator (end if not contained)
size_type	N () const
	number of blocks in the vector (are of variable size here)
size_type	size () const
block_vector_unmanaged &	operator+= (const block_vector_unmanaged &y)
	vector space addition
block_vector_unmanaged &	operator-= (const block_vector_unmanaged &y)
	vector space subtraction
block_vector_unmanaged &	operator*= (const field_type &k)
	vector space multiplication with scalar
block_vector_unmanaged &	operator/= (const field_type &k)
	vector space division by scalar
block_vector_unmanaged &	axpy (const field_type &a, const block_vector_unmanaged &y)
	vector space axpy operation
PromotionTraits< field_type, typename OtherB::field_type >::PromotedType	operator* (const block_vector_unmanaged< OtherB, OtherA > &y) const
	indefinite vector dot product \(\left (x^T \cdot y \right)\) which corresponds to Petsc's VecTDot More...
PromotionTraits< field_type, typename OtherB::field_type >::PromotedType	dot (const block_vector_unmanaged< OtherB, OtherA > &y) const
	vector dot product \(\left (x^H \cdot y \right)\) which corresponds to Petsc's VecDot More...
FieldTraits< field_type >::real_type	one_norm () const
	one norm (sum over absolute values of entries)
FieldTraits< field_type >::real_type	one_norm_real () const
	simplified one norm (uses Manhattan norm for complex values)
FieldTraits< field_type >::real_type	two_norm () const
	two norm sqrt(sum over squared values of entries)
FieldTraits< field_type >::real_type	two_norm2 () const
	Square of the two-norm (the sum over the squared values of the entries)
FieldTraits< ft >::real_type	infinity_norm () const
	infinity norm (maximum of absolute values of entries)
FieldTraits< ft >::real_type	infinity_norm () const
	infinity norm (maximum of absolute values of entries)
FieldTraits< ft >::real_type	infinity_norm_real () const
	simplified infinity norm (uses Manhattan norm for complex values)
FieldTraits< ft >::real_type	infinity_norm_real () const
	simplified infinity norm (uses Manhattan norm for complex values)
size_type	dim () const
	dimension of the vector space
iterator	beforeBegin ()

Detailed Description

template<class B, class A = std::allocator<B>>
class Dune::VariableBlockVector< B, A >

A Vector of blocks with different blocksizes.

implements a vector consisting of a number of blocks (to
be given at run-time) which themselves consist of a number
of blocks (also given at run-time) of the given type B.

VariableBlockVector is a container of containers!

Member Typedef Documentation

const_reference

template<class B , class A = std::allocator<B>>

typedef const window_type& Dune::VariableBlockVector< B, A >::const_reference

Export type used for const references to container entries.

Note

This is not B&, but an internal proxy class!

reference

template<class B , class A = std::allocator<B>>

typedef window_type& Dune::VariableBlockVector< B, A >::reference

Export type used for references to container entries.

Note

This is not B&, but an internal proxy class!

value_type

template<class B , class A = std::allocator<B>>

typedef BlockVector<B,A> Dune::VariableBlockVector< B, A >::value_type

Type of the elements of the outer vector, i.e., dynamic vectors of B.

Note that this is not the type referred to by the iterators and random access operators, which return proxy objects.

Member Enumeration Documentation

anonymous enum

template<class B , class A = std::allocator<B>>

anonymous enum

increment block level counter, yes, it is two levels because VariableBlockVector is a container of containers

Enumerator
blocklevel	The number of blocklevels this vector contains.

Constructor & Destructor Documentation

VariableBlockVector() [1/3]

template<class B , class A = std::allocator<B>>

Dune::VariableBlockVector< B, A >::VariableBlockVector ( )

inline

constructor without arguments makes empty vector, object cannot be used yet

VariableBlockVector() [2/3]

template<class B , class A = std::allocator<B>>

Dune::VariableBlockVector< B, A >::VariableBlockVector ( size_type  _nblocks )

inlineexplicit

make vector with given number of blocks, but size of each block is not yet known, object cannot be used yet

VariableBlockVector() [3/3]

template<class B , class A = std::allocator<B>>

Dune::VariableBlockVector< B, A >::VariableBlockVector ( size_type  _nblocks, size_type  m  )

inline

make vector with given number of blocks each having a constant size, object is fully usable then.

Parameters

_nblocks	Number of blocks
m	Number of elements in each block

Member Function Documentation

beforeBegin() [1/2]

iterator Dune::base_array_unmanaged< B, std::allocator< B > >::beforeBegin ( )

inlineinherited

Returns

an iterator that is positioned before the first entry of the vector.

beforeBegin() [2/2]

template<class B , class A = std::allocator<B>>

Iterator Dune::VariableBlockVector< B, A >::beforeBegin ( ) const

inline

Returns

an iterator that is positioned before the first entry of the vector.

beforeEnd() [1/2]

template<class B , class A = std::allocator<B>>

Iterator Dune::VariableBlockVector< B, A >::beforeEnd ( )

inline

Returns

an iterator that is positioned before the end iterator of the vector, i.e. at the last entry.

beforeEnd() [2/2]

template<class B , class A = std::allocator<B>>

ConstIterator Dune::VariableBlockVector< B, A >::beforeEnd ( ) const

inline

Returns

an iterator that is positioned before the end iterator of the vector. i.e. at the last element.

dot()

PromotionTraits<field_type,typename OtherB::field_type>::PromotedType Dune::block_vector_unmanaged< B, std::allocator< B > >::dot ( const block_vector_unmanaged< OtherB, OtherA > &  y ) const

inlineinherited

vector dot product \(\left (x^H \cdot y \right)\) which corresponds to Petsc's VecDot

http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Vec/VecDot.html

Parameters

y	other (compatible) vector

Returns

operator*()

PromotionTraits<field_type,typename OtherB::field_type>::PromotedType Dune::block_vector_unmanaged< B, std::allocator< B > >::operator* ( const block_vector_unmanaged< OtherB, OtherA > &  y ) const

inlineinherited

indefinite vector dot product \(\left (x^T \cdot y \right)\) which corresponds to Petsc's VecTDot

http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Vec/VecTDot.html

Parameters

y	other (compatible) vector

Returns

size()

template<class B , class A = std::allocator<B>>

size_type Dune::VariableBlockVector< B, A >::size ( ) const

inline

Number of blocks in the vector

Returns the same value as method N(), because the vector is dense

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

• dune/istl/vbvector.hh