LAEXC: swaps adjacent diagonal blocks T11 and T22 of order 1 or 2 in an upper quasi-triangular matrix T by an orthogonal similarity transformation. T must be in Schur canonical form, that is, block upper triangular with 1-by-1 and 2-by-2 diagonal blocks; each 2-by-2 diagonal block has its diagonal elements equal and its off-diagonal elements of opposite sign. More...

Public Member Functions
subroutine	dlaexc (wantq, n, t, ldt, q, ldq, j1, n1, n2, work, info)

	la_dlaexc

	la_qlaexc

subroutine	slaexc (wantq, n, t, ldt, q, ldq, j1, n1, n2, work, info)

	la_slaexc

Detailed Description

LAEXC: swaps adjacent diagonal blocks T11 and T22 of order 1 or 2 in an upper quasi-triangular matrix T by an orthogonal similarity transformation. T must be in Schur canonical form, that is, block upper triangular with 1-by-1 and 2-by-2 diagonal blocks; each 2-by-2 diagonal block has its diagonal elements equal and its off-diagonal elements of opposite sign.

Member Function/Subroutine Documentation

◆ dlaexc()

subroutine la_lapack::laexc::dlaexc	(	logical(lk), intent(in)	wantq,
		integer(ilp), intent(in)	n,
		real(dp), dimension(ldt,*), intent(inout)	t,
		integer(ilp), intent(in)	ldt,
		real(dp), dimension(ldq,*), intent(inout)	q,
		integer(ilp), intent(in)	ldq,
		integer(ilp), intent(in)	j1,
		integer(ilp), intent(in)	n1,
		integer(ilp), intent(in)	n2,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info )

◆ la_dlaexc()

la_lapack::laexc::la_dlaexc

◆ la_qlaexc()

la_lapack::laexc::la_qlaexc

◆ la_slaexc()

la_lapack::laexc::la_slaexc

◆ slaexc()

subroutine la_lapack::laexc::slaexc	(	logical(lk), intent(in)	wantq,
		integer(ilp), intent(in)	n,
		real(sp), dimension(ldt,*), intent(inout)	t,
		integer(ilp), intent(in)	ldt,
		real(sp), dimension(ldq,*), intent(inout)	q,
		integer(ilp), intent(in)	ldq,
		integer(ilp), intent(in)	j1,
		integer(ilp), intent(in)	n1,
		integer(ilp), intent(in)	n2,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info )

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

la_lapack.f90