MGCoarseGridHouseholder< number, VectorType > Class Template Reference

#include <deal.II/multigrid/mg_coarse.h>

Inheritance diagram for MGCoarseGridHouseholder< number, VectorType >:

Public Member Functions
	MGCoarseGridHouseholder (const FullMatrix< number > *A=0)
void	initialize (const FullMatrix< number > &A)
void	operator() (const unsigned int level, VectorType &dst, const VectorType &src) const
Public Member Functions inherited from MGCoarseGridBase< VectorType >
virtual	~MGCoarseGridBase ()
Public Member Functions inherited from Subscriptor
	Subscriptor ()
	Subscriptor (const Subscriptor &)
virtual	~Subscriptor ()
Subscriptor &	operator= (const Subscriptor &)
void	subscribe (const char *identifier=0) const
void	unsubscribe (const char *identifier=0) const
unsigned int	n_subscriptions () const
void	list_subscribers () const
	DeclException3 (ExcInUse, int, char *, std::string &,<< "Object of class "<< arg2<< " is still used by "<< arg1<< " other objects."<< "\"<< "(Additional information: "<< arg3<< ")\"<< "See the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) for "<< "a lot more information on what this error means and "<< "how to fix programs in which it happens.")
	DeclException2 (ExcNoSubscriber, char *, char *,<< "No subscriber with identifier <"<< arg2<< "> subscribes to this object of class "<< arg1<< ". Consequently, it cannot be unsubscribed.")
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Private Attributes
Householder< number >	householder

Detailed Description

template<typename number = double, class VectorType = Vector<number>>
class MGCoarseGridHouseholder< number, VectorType >

Coarse grid solver by QR factorization implemented in the class Householder.

Upon initialization, the QR decomposition of the matrix is computed. then, the operator() uses Householder::least_squares() to compute the action of the inverse.

Author

Guido Kanschat, 2003, 2012

Definition at line 122 of file mg_coarse.h.

Constructor & Destructor Documentation

MGCoarseGridHouseholder()

template<typename number = double, class VectorType = Vector<number>>

MGCoarseGridHouseholder< number, VectorType >::MGCoarseGridHouseholder

(

const FullMatrix< number > *

A = 0

)

Constructor, taking the coarse grid matrix.

Member Function Documentation

initialize()

template<typename number = double, class VectorType = Vector<number>>

void MGCoarseGridHouseholder< number, VectorType >::initialize

(

const FullMatrix< number > &

A

)

Initialize for a new matrix.

operator()()

template<typename number = double, class VectorType = Vector<number>>

void MGCoarseGridHouseholder< number, VectorType >::operator() ( const unsigned int  level, VectorType &  dst, const VectorType &  src  ) const

virtual

Solution operator.

Implements MGCoarseGridBase< VectorType >.

Member Data Documentation

householder

template<typename number = double, class VectorType = Vector<number>>

Householder<number> MGCoarseGridHouseholder< number, VectorType >::householder

private

Matrix for QR-factorization.

Definition at line 143 of file mg_coarse.h.

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

• deal.II/multigrid/mg_coarse.h