Given the initial eigenvalue approximations of T, LARRJ: does bisection to refine the eigenvalues of T, W( IFIRST-OFFSET ) through W( ILAST-OFFSET ), to more accuracy. Initial guesses for these eigenvalues are input in W, the corresponding estimate of the error in these guesses in WERR. During bisection, intervals [left, right] are maintained by storing their mid-points and semi-widths in the arrays W and WERR respectively. More...

Public Member Functions
pure subroutine	dlarrj (n, d, e2, ifirst, ilast, rtol, offset, w, werr, work, iwork, pivmin, spdiam, info)

	la_dlarrj

	la_qlarrj

pure subroutine	slarrj (n, d, e2, ifirst, ilast, rtol, offset, w, werr, work, iwork, pivmin, spdiam, info)

	la_slarrj

Detailed Description

Given the initial eigenvalue approximations of T, LARRJ: does bisection to refine the eigenvalues of T, W( IFIRST-OFFSET ) through W( ILAST-OFFSET ), to more accuracy. Initial guesses for these eigenvalues are input in W, the corresponding estimate of the error in these guesses in WERR. During bisection, intervals [left, right] are maintained by storing their mid-points and semi-widths in the arrays W and WERR respectively.

Member Function/Subroutine Documentation

◆ dlarrj()

pure subroutine la_lapack::larrj::dlarrj	(	integer(ilp), intent(in)	n,
		real(dp), dimension(*), intent(in)	d,
		real(dp), dimension(*), intent(in)	e2,
		integer(ilp), intent(in)	ifirst,
		integer(ilp), intent(in)	ilast,
		real(dp), intent(in)	rtol,
		integer(ilp), intent(in)	offset,
		real(dp), dimension(*), intent(inout)	w,
		real(dp), dimension(*), intent(inout)	werr,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		real(dp), intent(in)	pivmin,
		real(dp), intent(in)	spdiam,
		integer(ilp), intent(out)	info
	)

◆ la_dlarrj()

la_lapack::larrj::la_dlarrj

◆ la_qlarrj()

la_lapack::larrj::la_qlarrj

◆ la_slarrj()

la_lapack::larrj::la_slarrj

◆ slarrj()

pure subroutine la_lapack::larrj::slarrj	(	integer(ilp), intent(in)	n,
		real(sp), dimension(*), intent(in)	d,
		real(sp), dimension(*), intent(in)	e2,
		integer(ilp), intent(in)	ifirst,
		integer(ilp), intent(in)	ilast,
		real(sp), intent(in)	rtol,
		integer(ilp), intent(in)	offset,
		real(sp), dimension(*), intent(inout)	w,
		real(sp), dimension(*), intent(inout)	werr,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		real(sp), intent(in)	pivmin,
		real(sp), intent(in)	spdiam,
		integer(ilp), intent(out)	info
	)

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

la_lapack.f90