la_lapack::getsqrhrt Interface Reference

GETSQRHRT: computes a NB2-sized column blocked QR-factorization of a complex M-by-N matrix A with M >= N, A = Q * R. The routine uses internally a NB1-sized column blocked and MB1-sized row blocked TSQR-factorization and perfors the reconstruction of the Householder vectors from the TSQR output. The routine also converts the R_tsqr factor from the TSQR-factorization output into the R factor that corresponds to the Householder QR-factorization, A = Q_tsqr * R_tsqr = Q * R. The output Q and R factors are stored in the same format as in CGEQRT (Q is in blocked compact WY-representation). See the documentation of CGEQRT for more details on the format. More...

Public Member Functions
pure subroutine	cgetsqrhrt (m, n, mb1, nb1, nb2, a, lda, t, ldt, work, lwork, info)
	la_cgetsqrhrt
pure subroutine	dgetsqrhrt (m, n, mb1, nb1, nb2, a, lda, t, ldt, work, lwork, info)
	la_dgetsqrhrt
	la_qgetsqrhrt
pure subroutine	sgetsqrhrt (m, n, mb1, nb1, nb2, a, lda, t, ldt, work, lwork, info)
	la_sgetsqrhrt
	la_wgetsqrhrt
pure subroutine	zgetsqrhrt (m, n, mb1, nb1, nb2, a, lda, t, ldt, work, lwork, info)
	la_zgetsqrhrt

Detailed Description

GETSQRHRT: computes a NB2-sized column blocked QR-factorization of a complex M-by-N matrix A with M >= N, A = Q * R. The routine uses internally a NB1-sized column blocked and MB1-sized row blocked TSQR-factorization and perfors the reconstruction of the Householder vectors from the TSQR output. The routine also converts the R_tsqr factor from the TSQR-factorization output into the R factor that corresponds to the Householder QR-factorization, A = Q_tsqr * R_tsqr = Q * R. The output Q and R factors are stored in the same format as in CGEQRT (Q is in blocked compact WY-representation). See the documentation of CGEQRT for more details on the format.

Member Function/Subroutine Documentation

cgetsqrhrt()

pure subroutine la_lapack::getsqrhrt::cgetsqrhrt	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	mb1,
		integer(ilp), intent(in)	nb1,
		integer(ilp), intent(in)	nb2,
		complex(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		complex(sp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt,
		complex(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info
	)

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dgetsqrhrt()

pure subroutine la_lapack::getsqrhrt::dgetsqrhrt	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	mb1,
		integer(ilp), intent(in)	nb1,
		integer(ilp), intent(in)	nb2,
		real(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(dp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info
	)

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la_cgetsqrhrt()

la_lapack::getsqrhrt::la_cgetsqrhrt

la_dgetsqrhrt()

la_lapack::getsqrhrt::la_dgetsqrhrt

la_qgetsqrhrt()

la_lapack::getsqrhrt::la_qgetsqrhrt

la_sgetsqrhrt()

la_lapack::getsqrhrt::la_sgetsqrhrt

la_wgetsqrhrt()

la_lapack::getsqrhrt::la_wgetsqrhrt

la_zgetsqrhrt()

la_lapack::getsqrhrt::la_zgetsqrhrt

sgetsqrhrt()

pure subroutine la_lapack::getsqrhrt::sgetsqrhrt	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	mb1,
		integer(ilp), intent(in)	nb1,
		integer(ilp), intent(in)	nb2,
		real(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(sp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info
	)

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zgetsqrhrt()

pure subroutine la_lapack::getsqrhrt::zgetsqrhrt	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	mb1,
		integer(ilp), intent(in)	nb1,
		integer(ilp), intent(in)	nb2,
		complex(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		complex(dp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt,
		complex(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info
	)

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

• la_lapack.f90