ORHR_COL: takes an M-by-N real matrix Q_in with orthonormal columns as input, stored in A, and performs Householder Reconstruction (HR), i.e. reconstructs Householder vectors V(i) implicitly representing another M-by-N matrix Q_out, with the property that Q_in = Q_out*S, where S is an N-by-N diagonal matrix with diagonal entries equal to +1 or -1. The Householder vectors (columns V(i) of V) are stored in A on output, and the diagonal entries of S are stored in D. Block reflectors are also returned in T (same output format as DGEQRT). More...

Public Member Functions
pure subroutine	dorhr_col (m, n, nb, a, lda, t, ldt, d, info)

	la_dorhr_col

	la_qorhr_col

pure subroutine	sorhr_col (m, n, nb, a, lda, t, ldt, d, info)

	la_sorhr_col

Detailed Description

ORHR_COL: takes an M-by-N real matrix Q_in with orthonormal columns as input, stored in A, and performs Householder Reconstruction (HR), i.e. reconstructs Householder vectors V(i) implicitly representing another M-by-N matrix Q_out, with the property that Q_in = Q_out*S, where S is an N-by-N diagonal matrix with diagonal entries equal to +1 or -1. The Householder vectors (columns V(i) of V) are stored in A on output, and the diagonal entries of S are stored in D. Block reflectors are also returned in T (same output format as DGEQRT).

Member Function/Subroutine Documentation

◆ dorhr_col()

pure subroutine la_lapack::orhr_col::dorhr_col	(	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(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt,
		real(dp), dimension(*), intent(out)	d,
		integer(ilp), intent(out)	info
	)

◆ la_dorhr_col()

la_lapack::orhr_col::la_dorhr_col

◆ la_qorhr_col()

la_lapack::orhr_col::la_qorhr_col

◆ la_sorhr_col()

la_lapack::orhr_col::la_sorhr_col

◆ sorhr_col()

pure subroutine la_lapack::orhr_col::sorhr_col	(	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(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt,
		real(sp), dimension(*), intent(out)	d,
		integer(ilp), intent(out)	info
	)

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

la_lapack.f90