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Reference documentation for deal.II version Git f44ff8fda9 2021-02-26 21:14:49 +0100
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#include <deal.II/multigrid/mg_matrix.h>
Public Member Functions | |
MGMatrixSelect (const unsigned int row=0, const unsigned int col=0, MGLevelObject< MatrixType > *matrix=0) | |
void | set_matrix (MGLevelObject< MatrixType > *M) |
void | select_block (const unsigned int row, const unsigned int col) |
virtual void | vmult (const unsigned int level, Vector< number > &dst, const Vector< number > &src) const |
virtual void | vmult_add (const unsigned int level, Vector< number > &dst, const Vector< number > &src) const |
virtual void | Tvmult (const unsigned int level, Vector< number > &dst, const Vector< number > &src) const |
virtual void | Tvmult_add (const unsigned int level, Vector< number > &dst, const Vector< number > &src) const |
virtual unsigned int | get_minlevel () const=0 |
virtual unsigned int | get_maxlevel () const=0 |
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 | |
SmartPointer< MGLevelObject< MatrixType >, MGMatrixSelect< MatrixType, number > > | matrix |
unsigned int | row |
unsigned int | col |
Multilevel matrix selecting from block matrices. This class implements the interface defined by MGMatrixBase. The template parameter MatrixType
should be a block matrix class like BlockSparseMatrix or BlockSparseMatrixEZ
. Then, this class stores a pointer to a MGLevelObject of this matrix class. In each vmult
, the block selected on initialization will be multiplied with the vector provided.
Definition at line 121 of file mg_matrix.h.
MGMatrixSelect< MatrixType, number >::MGMatrixSelect | ( | const unsigned int | row = 0 , |
const unsigned int | col = 0 , |
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MGLevelObject< MatrixType > * | matrix = 0 |
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) |
Constructor. row
and col
are the coordinate of the selected block. The other argument is handed over to the SmartPointer
constructor.
Definition at line 320 of file mg_matrix.h.
void MGMatrixSelect< MatrixType, number >::set_matrix | ( | MGLevelObject< MatrixType > * | M | ) |
Set the matrix object to be used. The matrix object must exist longer as the MGMatrixSelect
object, since only a pointer is stored.
Definition at line 332 of file mg_matrix.h.
void MGMatrixSelect< MatrixType, number >::select_block | ( | const unsigned int | row, |
const unsigned int | col | ||
) |
Select the block for multiplication.
Definition at line 341 of file mg_matrix.h.
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virtual |
Matrix-vector-multiplication on a certain level.
Implements MGMatrixBase< Vector< number > >.
Definition at line 352 of file mg_matrix.h.
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virtual |
Adding matrix-vector-multiplication on a certain level.
Implements MGMatrixBase< Vector< number > >.
Definition at line 366 of file mg_matrix.h.
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virtual |
Transpose matrix-vector-multiplication on a certain level.
Implements MGMatrixBase< Vector< number > >.
Definition at line 380 of file mg_matrix.h.
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virtual |
Adding transpose matrix-vector-multiplication on a certain level.
Implements MGMatrixBase< Vector< number > >.
Definition at line 394 of file mg_matrix.h.
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pure virtualinherited |
Return the minimal level for which matrices are stored.
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pure virtualinherited |
Return the minimal level for which matrices are stored.
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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 |
Pointer to the matrix objects on each level.
Definition at line 182 of file mg_matrix.h.
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private |
Row coordinate of selected block.
Definition at line 186 of file mg_matrix.h.
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private |
Column coordinate of selected block.
Definition at line 190 of file mg_matrix.h.