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 override

Private Attributes
Householder< number >	householder

Subscriptor functionality
Classes derived from Subscriptor provide a facility to subscribe to this object. This is mostly used by the SmartPointer class.
std::atomic< unsigned int >	counter
std::map< std::string, unsigned int >	counter_map
std::vector< std::atomic< bool > * >	validity_pointers
const std::type_info *	object_info
void	subscribe (std::atomic< bool > *const validity, const std::string &identifier="") const
void	unsubscribe (std::atomic< bool > *const validity, const std::string &identifier="") const
unsigned int	n_subscriptions () const
template<typename StreamType >
void	list_subscribers (StreamType &stream) const
void	list_subscribers () const
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)
using	map_value_type = decltype(counter_map)::value_type
using	map_iterator = decltype(counter_map)::iterator
static std::mutex	mutex
static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)
static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)
void	check_no_subscribers () const noexcept

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.

Definition at line 175 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

overridevirtual

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 198 of file mg_coarse.h.

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

• include/deal.II/multigrid/mg_coarse.h