la_lapack::opmtr Interface Reference

OPMTR: overwrites the general real M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N': Q * C C * Q TRANS = 'T': Q**T * C C * Q**T where Q is a real orthogonal matrix of order nq, with nq = m if SIDE = 'L' and nq = n if SIDE = 'R'. Q is defined as the product of nq-1 elementary reflectors, as returned by DSPTRD using packed storage: if UPLO = 'U', Q = H(nq-1) . . . H(2) H(1); if UPLO = 'L', Q = H(1) H(2) . . . H(nq-1). More...

Public Member Functions
pure subroutine	dopmtr (side, uplo, trans, m, n, ap, tau, c, ldc, work, info)
	la_dopmtr
	la_qopmtr
pure subroutine	sopmtr (side, uplo, trans, m, n, ap, tau, c, ldc, work, info)
	la_sopmtr

Detailed Description

OPMTR: overwrites the general real M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N': Q * C C * Q TRANS = 'T': Q**T * C C * Q**T where Q is a real orthogonal matrix of order nq, with nq = m if SIDE = 'L' and nq = n if SIDE = 'R'. Q is defined as the product of nq-1 elementary reflectors, as returned by DSPTRD using packed storage: if UPLO = 'U', Q = H(nq-1) . . . H(2) H(1); if UPLO = 'L', Q = H(1) H(2) . . . H(nq-1).

Member Function/Subroutine Documentation

dopmtr()

pure subroutine la_lapack::opmtr::dopmtr	(	character, intent(in)	side,
		character, intent(in)	uplo,
		character, intent(in)	trans,
		integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		real(dp), dimension(*), intent(inout)	ap,
		real(dp), dimension(*), intent(in)	tau,
		real(dp), dimension(ldc,*), intent(inout)	c,
		integer(ilp), intent(in)	ldc,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info
	)

la_dopmtr()

la_lapack::opmtr::la_dopmtr

la_qopmtr()

la_lapack::opmtr::la_qopmtr

la_sopmtr()

la_lapack::opmtr::la_sopmtr

sopmtr()

pure subroutine la_lapack::opmtr::sopmtr	(	character, intent(in)	side,
		character, intent(in)	uplo,
		character, intent(in)	trans,
		integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		real(sp), dimension(*), intent(inout)	ap,
		real(sp), dimension(*), intent(in)	tau,
		real(sp), dimension(ldc,*), intent(inout)	c,
		integer(ilp), intent(in)	ldc,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info
	)

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

• la_lapack.f90