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Reference documentation for deal.II version Git 67353a5f2d 2021-01-26 18:33:38 +0100
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#include <deal.II/multigrid/mg_coarse.h>
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 |
template<class Archive > | |
void | serialize (Archive &ar, const unsigned int version) |
Subscriptor functionality | |
Classes derived from Subscriptor provide a facility to subscribe to this object. This is mostly used by the SmartPointer class. | |
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 |
Static Public Member Functions | |
static ::ExceptionBase & | ExcInUse (int arg1, std::string arg2, std::string arg3) |
static ::ExceptionBase & | ExcNoSubscriber (std::string arg1, std::string arg2) |
Private Attributes | |
Householder< number > | householder |
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.
MGCoarseGridHouseholder< number, VectorType >::MGCoarseGridHouseholder | ( | const FullMatrix< number > * | A = nullptr | ) |
Constructor, taking the coarse grid matrix.
void MGCoarseGridHouseholder< number, VectorType >::initialize | ( | const FullMatrix< number > & | A | ) |
Initialize for a new matrix.
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overridevirtual |
Solution operator.
Implements MGCoarseGridBase< VectorType >.
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inherited |
Subscribes a user of the object by storing the pointer validity
. The subscriber may be identified by text supplied as identifier
.
Definition at line 136 of file subscriptor.cc.
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inherited |
Unsubscribes a user from the object.
identifier
and the validity
pointer must be the same as the one supplied to subscribe(). Definition at line 156 of file subscriptor.cc.
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inlineinherited |
Return the present number of subscriptions to this object. This allows to use this class for reference counted lifetime determination where the last one to unsubscribe also deletes the object.
Definition at line 301 of file subscriptor.h.
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inlineinherited |
List the subscribers to the input stream
.
Definition at line 318 of file subscriptor.h.
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inherited |
List the subscribers to deallog
.
Definition at line 204 of file subscriptor.cc.
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inlineinherited |
Read or write the data of this object to or from a stream for the purpose of serialization using the BOOST serialization library.
This function does not actually serialize any of the member variables of this class. The reason is that what this class stores is only who subscribes to this object, but who does so at the time of storing the contents of this object does not necessarily have anything to do with who subscribes to the object when it is restored. Consequently, we do not want to overwrite the subscribers at the time of restoring, and then there is no reason to write the subscribers out in the first place.
Definition at line 310 of file subscriptor.h.
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private |
Matrix for QR-factorization.
Definition at line 198 of file mg_coarse.h.