This subroutine computes the square root of the I-th eigenvalue of a positive symmetric rank-one modification of a 2-by-2 diagonal matrix diag( D ) * diag( D ) + RHO * Z * transpose(Z) . The diagonal entries in the array D are assumed to satisfy 0 <= D(i) < D(j) for i < j . We also assume RHO > 0 and that the Euclidean norm of the vector Z is one. More...

Public Member Functions
pure subroutine	dlasd5 (i, d, z, delta, rho, dsigma, work)

	la_dlasd5

	la_qlasd5

pure subroutine	slasd5 (i, d, z, delta, rho, dsigma, work)

	la_slasd5

Detailed Description

This subroutine computes the square root of the I-th eigenvalue of a positive symmetric rank-one modification of a 2-by-2 diagonal matrix diag( D ) * diag( D ) + RHO * Z * transpose(Z) . The diagonal entries in the array D are assumed to satisfy 0 <= D(i) < D(j) for i < j . We also assume RHO > 0 and that the Euclidean norm of the vector Z is one.

Member Function/Subroutine Documentation

◆ dlasd5()

pure subroutine la_lapack::lasd5::dlasd5	(	integer(ilp), intent(in)	i,
		real(dp), dimension(2), intent(in)	d,
		real(dp), dimension(2), intent(in)	z,
		real(dp), dimension(2), intent(out)	delta,
		real(dp), intent(in)	rho,
		real(dp), intent(out)	dsigma,
		real(dp), dimension(2), intent(out)	work
	)

◆ la_dlasd5()

la_lapack::lasd5::la_dlasd5

◆ la_qlasd5()

la_lapack::lasd5::la_qlasd5

◆ la_slasd5()

la_lapack::lasd5::la_slasd5

◆ slasd5()

pure subroutine la_lapack::lasd5::slasd5	(	integer(ilp), intent(in)	i,
		real(sp), dimension(2), intent(in)	d,
		real(sp), dimension(2), intent(in)	z,
		real(sp), dimension(2), intent(out)	delta,
		real(sp), intent(in)	rho,
		real(sp), intent(out)	dsigma,
		real(sp), dimension(2), intent(out)	work
	)

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

la_lapack.f90