la_lapack::larft Interface Reference

LARFT: forms the triangular factor T of a complex block reflector H of order n, which is defined as a product of k elementary reflectors. If DIRECT = 'F', H = H(1) H(2) . . . H(k) and T is upper triangular; If DIRECT = 'B', H = H(k) . . . H(2) H(1) and T is lower triangular. If STOREV = 'C', the vector which defines the elementary reflector H(i) is stored in the i-th column of the array V, and H = I - V * T * V**H If STOREV = 'R', the vector which defines the elementary reflector H(i) is stored in the i-th row of the array V, and H = I - V**H * T * V. More...

Public Member Functions
pure subroutine	clarft (direct, storev, n, k, v, ldv, tau, t, ldt)
	la_clarft
pure subroutine	dlarft (direct, storev, n, k, v, ldv, tau, t, ldt)
	la_dlarft
	la_qlarft
pure subroutine	slarft (direct, storev, n, k, v, ldv, tau, t, ldt)
	la_slarft
	la_wlarft
pure subroutine	zlarft (direct, storev, n, k, v, ldv, tau, t, ldt)
	la_zlarft

Detailed Description

LARFT: forms the triangular factor T of a complex block reflector H of order n, which is defined as a product of k elementary reflectors. If DIRECT = 'F', H = H(1) H(2) . . . H(k) and T is upper triangular; If DIRECT = 'B', H = H(k) . . . H(2) H(1) and T is lower triangular. If STOREV = 'C', the vector which defines the elementary reflector H(i) is stored in the i-th column of the array V, and H = I - V * T * V**H If STOREV = 'R', the vector which defines the elementary reflector H(i) is stored in the i-th row of the array V, and H = I - V**H * T * V.

Member Function/Subroutine Documentation

clarft()

pure subroutine la_lapack::larft::clarft	(	character, intent(in)	direct,
		character, intent(in)	storev,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	k,
		complex(sp), dimension(ldv,*), intent(in)	v,
		integer(ilp), intent(in)	ldv,
		complex(sp), dimension(*), intent(in)	tau,
		complex(sp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt )

dlarft()

pure subroutine la_lapack::larft::dlarft	(	character, intent(in)	direct,
		character, intent(in)	storev,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	k,
		real(dp), dimension(ldv,*), intent(in)	v,
		integer(ilp), intent(in)	ldv,
		real(dp), dimension(*), intent(in)	tau,
		real(dp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt )

la_clarft()

la_lapack::larft::la_clarft

la_dlarft()

la_lapack::larft::la_dlarft

la_qlarft()

la_lapack::larft::la_qlarft

la_slarft()

la_lapack::larft::la_slarft

la_wlarft()

la_lapack::larft::la_wlarft

la_zlarft()

la_lapack::larft::la_zlarft

slarft()

pure subroutine la_lapack::larft::slarft	(	character, intent(in)	direct,
		character, intent(in)	storev,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	k,
		real(sp), dimension(ldv,*), intent(in)	v,
		integer(ilp), intent(in)	ldv,
		real(sp), dimension(*), intent(in)	tau,
		real(sp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt )

zlarft()

pure subroutine la_lapack::larft::zlarft	(	character, intent(in)	direct,
		character, intent(in)	storev,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	k,
		complex(dp), dimension(ldv,*), intent(in)	v,
		integer(ilp), intent(in)	ldv,
		complex(dp), dimension(*), intent(in)	tau,
		complex(dp), dimension(ldt,*), intent(out)	t,
		integer(ilp), intent(in)	ldt )

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

• la_lapack.f90