la_lapack::lasyf Interface Reference

LASYF: computes a partial factorization of a complex symmetric matrix A using the Bunch-Kaufman diagonal pivoting method. The partial factorization has the form: A = ( I U12 ) ( A11 0 ) ( I 0 ) if UPLO = 'U', or: ( 0 U22 ) ( 0 D ) ( U12**T U22**T ) A = ( L11 0 ) ( D 0 ) ( L11**T L21**T ) if UPLO = 'L' ( L21 I ) ( 0 A22 ) ( 0 I ) where the order of D is at most NB. The actual order is returned in the argument KB, and is either NB or NB-1, or N if N <= NB. Note that U**T denotes the transpose of U. LASYF is an auxiliary routine called by CSYTRF. It uses blocked code (calling Level 3 BLAS) to update the submatrix A11 (if UPLO = 'U') or A22 (if UPLO = 'L'). More...

Public Member Functions
pure subroutine	clasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info)
	la_clasyf
pure subroutine	dlasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info)
	la_dlasyf
	la_qlasyf
pure subroutine	slasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info)
	la_slasyf
	la_wlasyf
pure subroutine	zlasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info)
	la_zlasyf

Detailed Description

LASYF: computes a partial factorization of a complex symmetric matrix A using the Bunch-Kaufman diagonal pivoting method. The partial factorization has the form: A = ( I U12 ) ( A11 0 ) ( I 0 ) if UPLO = 'U', or: ( 0 U22 ) ( 0 D ) ( U12**T U22**T ) A = ( L11 0 ) ( D 0 ) ( L11**T L21**T ) if UPLO = 'L' ( L21 I ) ( 0 A22 ) ( 0 I ) where the order of D is at most NB. The actual order is returned in the argument KB, and is either NB or NB-1, or N if N <= NB. Note that U**T denotes the transpose of U. LASYF is an auxiliary routine called by CSYTRF. It uses blocked code (calling Level 3 BLAS) to update the submatrix A11 (if UPLO = 'U') or A22 (if UPLO = 'L').

Member Function/Subroutine Documentation

clasyf()

pure subroutine la_lapack::lasyf::clasyf	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		integer(ilp), intent(out)	kb,
		complex(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(out)	ipiv,
		complex(sp), dimension(ldw,*), intent(out)	w,
		integer(ilp), intent(in)	ldw,
		integer(ilp), intent(out)	info
	)

dlasyf()

pure subroutine la_lapack::lasyf::dlasyf	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		integer(ilp), intent(out)	kb,
		real(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(out)	ipiv,
		real(dp), dimension(ldw,*), intent(out)	w,
		integer(ilp), intent(in)	ldw,
		integer(ilp), intent(out)	info
	)

la_clasyf()

la_lapack::lasyf::la_clasyf

la_dlasyf()

la_lapack::lasyf::la_dlasyf

la_qlasyf()

la_lapack::lasyf::la_qlasyf

la_slasyf()

la_lapack::lasyf::la_slasyf

la_wlasyf()

la_lapack::lasyf::la_wlasyf

la_zlasyf()

la_lapack::lasyf::la_zlasyf

slasyf()

pure subroutine la_lapack::lasyf::slasyf	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		integer(ilp), intent(out)	kb,
		real(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(out)	ipiv,
		real(sp), dimension(ldw,*), intent(out)	w,
		integer(ilp), intent(in)	ldw,
		integer(ilp), intent(out)	info
	)

zlasyf()

pure subroutine la_lapack::lasyf::zlasyf	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		integer(ilp), intent(out)	kb,
		complex(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(out)	ipiv,
		complex(dp), dimension(ldw,*), intent(out)	w,
		integer(ilp), intent(in)	ldw,
		integer(ilp), intent(out)	info
	)

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

• la_lapack.f90