LQUPMatrix Class Template Reference

#include <factorized-matrix.h>

template<class Field>
class LinBox::LQUPMatrix< Field >


Public Types
typedef Field::Element	Element
Public Member Functions
	LQUPMatrix (const Field &F, const BlasMatrix< Element > &A)
	LQUPMatrix (const Field &F, BlasMatrix< Element > &A)
	LQUPMatrix (const BlasBlackbox< Field > &A)
	LQUPMatrix (BlasBlackbox< Field > &A)
	~LQUPMatrix ()
Field &	field ()
size_t	rowdim () const
size_t	coldim () const
size_t	getrank () const
const BlasPermutation &	getP () const
const BlasPermutation &	getQ () const
TriangularBlasMatrix< Element > &	getL (TriangularBlasMatrix< Element > &L) const
TriangularBlasMatrix< Element > &	getU (TriangularBlasMatrix< Element > &U) const
BlasMatrix< Element > &	getS (BlasMatrix< Element > &S) const
Element *	getPointer () const
const size_t	getStride () const
template<class Operand> Operand &	left_solve (Operand &X, const Operand &B) const
template<class Operand> Operand &	left_solve (Operand &B) const
template<class Operand> Operand &	right_solve (Operand &X, const Operand &B) const
template<class Operand> Operand &	right_solve (Operand &B) const
template<class Operand> Operand &	left_Lsolve (Operand &X, const Operand &B) const
template<class Operand> Operand &	left_Lsolve (Operand &B) const
template<class Operand> Operand &	right_Lsolve (Operand &X, const Operand &B) const
template<class Operand> Operand &	right_Lsolve (Operand &B) const
template<class Operand> Operand &	left_Usolve (Operand &X, const Operand &B) const
template<class Operand> Operand &	rleft_Usolve (Operand &B) const
template<class Operand> Operand &	right_Usolve (Operand &X, const Operand &B) const
template<class Operand> Operand &	right_Usolve (Operand &B) const
Protected Attributes
Field	_F
BlasMatrix< Element > &	_LU
BlasPermutation	_P
BlasPermutation	_Q
size_t	_m
size_t	_n
size_t	_rank
bool	_alloc

Member Typedef Documentation

typedef Field::Element Element

Constructor & Destructor Documentation

LQUPMatrix ( const Field & F,

const BlasMatrix< Element > & A

) [inline]

LQUPMatrix ( const Field & F,

BlasMatrix< Element > & A

) [inline]

LQUPMatrix ( const BlasBlackbox< Field > & A ) [inline]

LQUPMatrix ( BlasBlackbox< Field > & A ) [inline]

~LQUPMatrix ( ) [inline]

Member Function Documentation

Field& field ( ) [inline]

size_t rowdim ( ) const [inline]

size_t coldim ( ) const [inline]

size_t getrank ( ) const [inline]

const BlasPermutation& getP ( ) const [inline]

const BlasPermutation& getQ ( ) const [inline]

get the _transpose_ of the permutation Q NOTE: this does not return Q itself! (because it is more difficult to compute) If needed, Q can be obtained as a TransposedBlasMatrix from the return value
One reason this confusion exists is that left-multiplying by a permuation matrix corresponds to a row permuation S_n, while right-multiplying by the same matrix corresponds to the inverse column permutation ^(-1)! Usually this is handled intelligently (eg by applyP) but you must be careful with getQ().