Reference documentation for deal.II version Git a5ed68a04a 2019-09-22 06:50:58 -0600
\(\newcommand{\dealcoloneq}{\mathrel{\vcenter{:}}=}\)
Public Member Functions | Private Attributes | List of all members
MGCoarseGridHouseholder< number, VectorType > Class Template Reference

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

Inheritance diagram for MGCoarseGridHouseholder< number, VectorType >:
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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
 
- Public Member Functions inherited from MGCoarseGridBase< VectorType >
virtual ~MGCoarseGridBase () override=default
 
- Public Member Functions inherited from Subscriptor
 Subscriptor ()
 
 Subscriptor (const Subscriptor &)
 
 Subscriptor (Subscriptor &&) noexcept
 
virtual ~Subscriptor ()
 
Subscriptoroperator= (const Subscriptor &)
 
Subscriptoroperator= (Subscriptor &&) noexcept
 
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)
 

Private Attributes

Householder< number > householder
 

Additional Inherited Members

- Static Public Member Functions inherited from Subscriptor
static ::ExceptionBaseExcInUse (int arg1, std::string arg2, std::string arg3)
 
static ::ExceptionBaseExcNoSubscriber (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 264 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 287 of file mg_coarse.h.


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