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=nullptr)
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 ()=default
Public Member Functions inherited from Subscriptor
	Subscriptor ()
	Subscriptor (const Subscriptor &)
	Subscriptor (Subscriptor &&) noexcept
virtual	~Subscriptor ()
Subscriptor &	operator= (const Subscriptor &)
Subscriptor &	operator= (Subscriptor &&) noexcept
void	subscribe (const char *identifier=nullptr) const
void	unsubscribe (const char *identifier=nullptr) const
unsigned int	n_subscriptions () const
void	list_subscribers () const
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Private Attributes
Householder< number >	householder

Additional Inherited Members
Static Public Member Functions inherited from Subscriptor
static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)
static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

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 248 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 = nullptr

)

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 269 of file mg_coarse.h.

---

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

• deal.II/multigrid/mg_coarse.h