AbstractLinAlgPack::Permutation Class Reference

Abstract interface to permutation matrices. More...

#include <AbstractLinAlgPack_Permutation.hpp>

List of all members.

Public Member Functions
virtual	~Permutation ()
Vector space
virtual const VectorSpace &	space () const =0
	Return a reference to a vector space object that this permutation is compatible with.
Information
virtual size_type	dim () const =0
	Return the dimension of the permutation.
virtual bool	is_identity () const =0
	Returns true if this is the identity permutation I.
virtual std::ostream &	output (std::ostream &out) const =0
	Prints debug type of information.
Vector permutations
virtual void	permute (BLAS_Cpp::Transp P_trans, const Vector &x, VectorMutable *y) const =0
	Permute a vector op(P)*x -> y
virtual void	permute (BLAS_Cpp::Transp P_trans, VectorMutable *y) const =0
	Permute a vector op(P)*y -> y

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Detailed Description

Abstract interface to permutation matrices.

A Permutation object is used to permute the elements within a vector. It is not a general linear operator since it does not map between vector spaces. It only permutes elements within the same vector space.

Definition at line 56 of file AbstractLinAlgPack_Permutation.hpp.

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Constructor & Destructor Documentation

virtual AbstractLinAlgPack::Permutation::~Permutation

(

)

[inline, virtual]

Definition at line 60 of file AbstractLinAlgPack_Permutation.hpp.

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Member Function Documentation

virtual const VectorSpace& AbstractLinAlgPack::Permutation::space

(

)

const [pure virtual]

Return a reference to a vector space object that this permutation is compatible with.

virtual size_type AbstractLinAlgPack::Permutation::dim

(

)

const [pure virtual]

Return the dimension of the permutation.

virtual bool AbstractLinAlgPack::Permutation::is_identity

(

)

const [pure virtual]

Returns true if this is the identity permutation I.

virtual std::ostream& AbstractLinAlgPack::Permutation::output

(

std::ostream &

out

)

const [pure virtual]

Prints debug type of information.

virtual void AbstractLinAlgPack::Permutation::permute	(	BLAS_Cpp::Transp	P_trans,
		const Vector &	x,
		VectorMutable *	y
	)		const [pure virtual]

Permute a vector op(P)*x -> y

Parameters:

P_trans	[in] op(P) = P for P_trans == BLAS_Cpp::no_trans or op(P) = P' for P_trans == BLAS_Cpp::trans.
x	[in] Vector.
y	[out] Vector.

Preconditions:

• y != NULL (throw std::invalid_argument)
• x.space().is_compatible(this->space()) == true (throw VectorSpace::IncompatibleVectorSpaces)
• y->space().is_compatible(this->space()) == true (throw VectorSpace::IncompatibleVectorSpaces)

virtual void AbstractLinAlgPack::Permutation::permute	(	BLAS_Cpp::Transp	P_trans,
		VectorMutable *	y
	)		const [pure virtual]

Permute a vector op(P)*y -> y

Parameters:

P_trans	[in] op(P) = P for P_trans == BLAS_Cpp::no_trans or op(P) = P' for P_trans == BLAS_Cpp::trans.
y	[in/out] Vector.

Preconditions:

• y != NULL (throw std::invalid_argument)
• y->space().is_compatible(this->space()) == true (throw VectorSpace::IncompatibleVectorSpaces)

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

• AbstractLinAlgPack_Permutation.hpp