la_lapack::labrd Interface Reference

LABRD: reduces the first NB rows and columns of a complex general m by n matrix A to upper or lower real bidiagonal form by a unitary transformation Q**H * A * P, and returns the matrices X and Y which are needed to apply the transformation to the unreduced part of A. If m >= n, A is reduced to upper bidiagonal form; if m < n, to lower bidiagonal form. This is an auxiliary routine called by CGEBRD. More...

Public Member Functions
pure subroutine	clabrd (m, n, nb, a, lda, d, e, tauq, taup, x, ldx, y, ldy)
	la_clabrd
pure subroutine	dlabrd (m, n, nb, a, lda, d, e, tauq, taup, x, ldx, y, ldy)
	la_dlabrd
	la_qlabrd
pure subroutine	slabrd (m, n, nb, a, lda, d, e, tauq, taup, x, ldx, y, ldy)
	la_slabrd
	la_wlabrd
pure subroutine	zlabrd (m, n, nb, a, lda, d, e, tauq, taup, x, ldx, y, ldy)
	la_zlabrd

Detailed Description

LABRD: reduces the first NB rows and columns of a complex general m by n matrix A to upper or lower real bidiagonal form by a unitary transformation Q**H * A * P, and returns the matrices X and Y which are needed to apply the transformation to the unreduced part of A. If m >= n, A is reduced to upper bidiagonal form; if m < n, to lower bidiagonal form. This is an auxiliary routine called by CGEBRD.

Member Function/Subroutine Documentation

clabrd()

pure subroutine la_lapack::labrd::clabrd	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		complex(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(sp), dimension(*), intent(out)	d,
		real(sp), dimension(*), intent(out)	e,
		complex(sp), dimension(*), intent(out)	tauq,
		complex(sp), dimension(*), intent(out)	taup,
		complex(sp), dimension(ldx,*), intent(out)	x,
		integer(ilp), intent(in)	ldx,
		complex(sp), dimension(ldy,*), intent(out)	y,
		integer(ilp), intent(in)	ldy )

dlabrd()

pure subroutine la_lapack::labrd::dlabrd	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		real(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(dp), dimension(*), intent(out)	d,
		real(dp), dimension(*), intent(out)	e,
		real(dp), dimension(*), intent(out)	tauq,
		real(dp), dimension(*), intent(out)	taup,
		real(dp), dimension(ldx,*), intent(out)	x,
		integer(ilp), intent(in)	ldx,
		real(dp), dimension(ldy,*), intent(out)	y,
		integer(ilp), intent(in)	ldy )

la_clabrd()

la_lapack::labrd::la_clabrd

la_dlabrd()

la_lapack::labrd::la_dlabrd

la_qlabrd()

la_lapack::labrd::la_qlabrd

la_slabrd()

la_lapack::labrd::la_slabrd

la_wlabrd()

la_lapack::labrd::la_wlabrd

la_zlabrd()

la_lapack::labrd::la_zlabrd

slabrd()

pure subroutine la_lapack::labrd::slabrd	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		real(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(sp), dimension(*), intent(out)	d,
		real(sp), dimension(*), intent(out)	e,
		real(sp), dimension(*), intent(out)	tauq,
		real(sp), dimension(*), intent(out)	taup,
		real(sp), dimension(ldx,*), intent(out)	x,
		integer(ilp), intent(in)	ldx,
		real(sp), dimension(ldy,*), intent(out)	y,
		integer(ilp), intent(in)	ldy )

zlabrd()

pure subroutine la_lapack::labrd::zlabrd	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nb,
		complex(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(dp), dimension(*), intent(out)	d,
		real(dp), dimension(*), intent(out)	e,
		complex(dp), dimension(*), intent(out)	tauq,
		complex(dp), dimension(*), intent(out)	taup,
		complex(dp), dimension(ldx,*), intent(out)	x,
		integer(ilp), intent(in)	ldx,
		complex(dp), dimension(ldy,*), intent(out)	y,
		integer(ilp), intent(in)	ldy )

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

• la_lapack.f90