DiagPrec Class Template Reference
[Solver]

#include <Precond.h>

List of all members.

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Detailed Description

template<class T_, class M_>
class OFELI::DiagPrec< T_, M_ >

To set diagonal preconditioner. All matrix elements are divided by diagonal elements.

Template Argument :

• T_ : data type (double, float, ...)
• M_ : matrix class

Public Member Functions
	DiagPrec (const M_ &a)
	Constructor using matrix of the linear system to precondition.
const T_ &	getDiag (size_t i) const
	Return i-th diagonal entry of preconditioning matrix.
T_ &	getPivot (size_t i) const
	Return i-th pivot of preconditioning matrix.
void	Solve (const Vect< T_ > &b, Vect< T_ > &x) const
	Solve a linear system with preconditioning matrix.
void	Solve (Vect< T_ > &x) const
	Solve a linear system with preconditioning matrix.
void	TransSolve (const Vect< T_ > &b, Vect< T_ > &x) const
	Solve a linear system with transposed preconditioning matrix.
void	TransSolve (Vect< T_ > &x) const
	Solve a linear system with transposed preconditioning matrix.
	~DiagPrec ()
	Destructor.

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Member Function Documentation

void Solve	(	const Vect< T_ > &	b,
		Vect< T_ > &	x
	)			const

Solve a linear system with preconditioning matrix.

Parameters:

[in]	b	Right-hand side
[out]	x	Solution vector

void Solve

(

Vect< T_ > &

x

)

const

Solve a linear system with preconditioning matrix.

Parameters:

x

[in/out] Right-hand side in input and solution in output.

Referenced by DiagPrec::TransSolve().

void TransSolve	(	const Vect< T_ > &	b,
		Vect< T_ > &	x
	)			const

Solve a linear system with transposed preconditioning matrix.

Parameters:

[in]	b	Right-hand side.
[out]	x	Solution vector.

References DiagPrec::Solve().

void TransSolve

(

Vect< T_ > &

x

)

const

Solve a linear system with transposed preconditioning matrix.

Parameters:

[in,out]

x

Right-hand side in input and solution in output.

References DiagPrec::Solve().