Precond Class Reference

Abstract base preconditioner class. More...

#include <precond.hpp>

Inheritance diagram for Precond:

Public Member Functions
virtual	~Precond ()
	Virtual destructor. More...
virtual Precond *	copy (void) const =0
	Get a new copy of preconditiner. More...
virtual void	prepare (const CRowMatrix &A)=0
	Prepare preconditioner for matrices with non-zero pattern equal to A. More...
virtual void	construct (const CRowMatrix &A)=0
	Construct preconditioner for matrix A. More...
virtual void	clear (void)=0
	Clear preconditioner. More...
virtual bool	is_prepared (void) const =0
	Return false if prepare is needed. More...
virtual std::string	typestring (void) const =0
	Return string indicating type of preconditioner. More...
virtual void	solve (Vector &x, const Vector &b) const =0
	Solve M* x = b and return x. Here M is a preconditioner matrix built for matrix A. See implementations of Precond for more information. More...

Detailed Description

Abstract base preconditioner class.

Preconditioners are made in two steps. A prepare() function is called to prepare the preconditioner for processing matrices with a certain non-zero pattern. The construct() function can then be used to build the preconditioner for a certain matrix of this type.

Constructor & Destructor Documentation

~Precond()

virtual Precond::~Precond ( )

inlinevirtual

Virtual destructor.

Member Function Documentation

clear()

virtual void Precond::clear ( void  )

pure virtual

Clear preconditioner.

Clears preconditioner. Both prepare() and construct() functions have to be called after this.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

construct()

virtual void Precond::construct ( const CRowMatrix &  A )

pure virtual

Construct preconditioner for matrix A.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

copy()

virtual Precond* Precond::copy ( void  ) const

pure virtual

Get a new copy of preconditiner.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

is_prepared()

virtual bool Precond::is_prepared ( void  ) const

pure virtual

Return false if prepare is needed.

Returns true if prepare is not needed and false if it is.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

prepare()

virtual void Precond::prepare ( const CRowMatrix &  A )

pure virtual

Prepare preconditioner for matrices with non-zero pattern equal to A.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

solve()

virtual void Precond::solve ( Vector &  x, const Vector &  b  ) const

pure virtual

Solve M* x = b and return x. Here M is a preconditioner matrix built for matrix A. See implementations of Precond for more information.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

typestring()

virtual std::string Precond::typestring ( void  ) const

pure virtual

Return string indicating type of preconditioner.

Implemented in ILU1_Precond, ILU0_Precond, Empty_Precond, and Diag_Precond.

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

• precond.hpp