la_lapack::larfgp Interface Reference

LARFGP: generates a complex elementary reflector H of order n, such that H**H * ( alpha ) = ( beta ), H**H * H = I. ( x ) ( 0 ) where alpha and beta are scalars, beta is real and non-negative, and x is an (n-1)-element complex vector. H is represented in the form H = I - tau * ( 1 ) * ( 1 v**H ) , ( v ) where tau is a complex scalar and v is a complex (n-1)-element vector. Note that H is not hermitian. If the elements of x are all zero and alpha is real, then tau = 0 and H is taken to be the unit matrix. More...

Public Member Functions
subroutine	clarfgp (n, alpha, x, incx, tau)
	la_clarfgp
subroutine	dlarfgp (n, alpha, x, incx, tau)
	la_dlarfgp
	la_qlarfgp
subroutine	slarfgp (n, alpha, x, incx, tau)
	la_slarfgp
	la_wlarfgp
subroutine	zlarfgp (n, alpha, x, incx, tau)
	la_zlarfgp

Detailed Description

LARFGP: generates a complex elementary reflector H of order n, such that H**H * ( alpha ) = ( beta ), H**H * H = I. ( x ) ( 0 ) where alpha and beta are scalars, beta is real and non-negative, and x is an (n-1)-element complex vector. H is represented in the form H = I - tau * ( 1 ) * ( 1 v**H ) , ( v ) where tau is a complex scalar and v is a complex (n-1)-element vector. Note that H is not hermitian. If the elements of x are all zero and alpha is real, then tau = 0 and H is taken to be the unit matrix.

Member Function/Subroutine Documentation

clarfgp()

subroutine la_lapack::larfgp::clarfgp	(	integer(ilp), intent(in)	n,
		complex(sp), intent(inout)	alpha,
		complex(sp), dimension(*), intent(inout)	x,
		integer(ilp), intent(in)	incx,
		complex(sp), intent(out)	tau
	)

dlarfgp()

subroutine la_lapack::larfgp::dlarfgp	(	integer(ilp), intent(in)	n,
		real(dp), intent(inout)	alpha,
		real(dp), dimension(*), intent(inout)	x,
		integer(ilp), intent(in)	incx,
		real(dp), intent(out)	tau
	)

la_clarfgp()

la_lapack::larfgp::la_clarfgp

la_dlarfgp()

la_lapack::larfgp::la_dlarfgp

la_qlarfgp()

la_lapack::larfgp::la_qlarfgp

la_slarfgp()

la_lapack::larfgp::la_slarfgp

la_wlarfgp()

la_lapack::larfgp::la_wlarfgp

la_zlarfgp()

la_lapack::larfgp::la_zlarfgp

slarfgp()

subroutine la_lapack::larfgp::slarfgp	(	integer(ilp), intent(in)	n,
		real(sp), intent(inout)	alpha,
		real(sp), dimension(*), intent(inout)	x,
		integer(ilp), intent(in)	incx,
		real(sp), intent(out)	tau
	)

zlarfgp()

subroutine la_lapack::larfgp::zlarfgp	(	integer(ilp), intent(in)	n,
		complex(dp), intent(inout)	alpha,
		complex(dp), dimension(*), intent(inout)	x,
		integer(ilp), intent(in)	incx,
		complex(dp), intent(out)	tau
	)

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

• la_lapack.f90