Reference documentation for deal.II version SVN Revision 32822
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PreconditionJacobi< MATRIX > Class Template Reference

#include <precondition.h>

Inheritance diagram for PreconditionJacobi< MATRIX >:
[legend]

Public Member Functions

template<class VECTOR >
void vmult (VECTOR &, const VECTOR &) const
 
template<class VECTOR >
void Tvmult (VECTOR &, const VECTOR &) const
 
template<class VECTOR >
void step (VECTOR &x, const VECTOR &rhs) const
 
template<class VECTOR >
void Tstep (VECTOR &x, const VECTOR &rhs) const
 
- Public Member Functions inherited from PreconditionRelaxation< MATRIX >
void initialize (const MATRIX &A, const AdditionalData &parameters=AdditionalData())
 
void clear ()
 
- Public Member Functions inherited from Subscriptor
 Subscriptor ()
 
 Subscriptor (const Subscriptor &)
 
virtual ~Subscriptor ()
 
Subscriptoroperator= (const Subscriptor &)
 
void subscribe (const char *identifier=0) const
 
void unsubscribe (const char *identifier=0) const
 
unsigned int n_subscriptions () const
 
void list_subscribers () const
 
 DeclException3 (ExcInUse, int, char *, std::string &,<< "Object of class "<< arg2<< " is still used by "<< arg1<< " other objects.\n"<< "(Additional information: "<< arg3<< ")\n"<< "Note the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) for "<< "more information on what this error means.")
 
 DeclException2 (ExcNoSubscriber, char *, char *,<< "No subscriber with identifier \""<< arg2<< "\" did subscribe to this object of class "<< arg1)
 
template<class Archive >
void serialize (Archive &ar, const unsigned int version)
 

Additional Inherited Members

- Protected Attributes inherited from PreconditionRelaxation< MATRIX >
SmartPointer< const MATRIX,
PreconditionRelaxation< MATRIX > > 
A
 
double relaxation
 

Detailed Description

template<class MATRIX = SparseMatrix<double>>
class PreconditionJacobi< MATRIX >

Jacobi preconditioner using matrix built-in function. The MATRIX class used is required to have a function precondition_Jacobi(VECTOR&, const VECTOR&, double)

// Declare related objects
SolverCG<> solver(...);
//...initialize and build A
// Define and initialize preconditioner
precondition.initialize (A, .6);
solver.solve (A, x, b, precondition);
Author
Guido Kanschat, 2000

Definition at line 432 of file precondition.h.

Member Function Documentation

template<class MATRIX = SparseMatrix<double>>
template<class VECTOR >
void PreconditionJacobi< MATRIX >::vmult ( VECTOR &  ,
const VECTOR &   
) const

Apply preconditioner.

template<class MATRIX = SparseMatrix<double>>
template<class VECTOR >
void PreconditionJacobi< MATRIX >::Tvmult ( VECTOR &  ,
const VECTOR &   
) const

Apply transpose preconditioner. Since this is a symmetric preconditioner, this function is the same as vmult().

template<class MATRIX = SparseMatrix<double>>
template<class VECTOR >
void PreconditionJacobi< MATRIX >::step ( VECTOR &  x,
const VECTOR &  rhs 
) const

Perform one step of the preconditioned Richardson iteration.

template<class MATRIX = SparseMatrix<double>>
template<class VECTOR >
void PreconditionJacobi< MATRIX >::Tstep ( VECTOR &  x,
const VECTOR &  rhs 
) const

Perform one transposed step of the preconditioned Richardson iteration.


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