Re: [Numpy-discussion] eigh: eigenvalue order

[Nils W. <nw...@ia...>]

On Tue, 24 Oct 2006 11:16:19 -0700
  "Keith Goodman" <kwg...@gm...> wrote:
> Is there any guarantee on the order of eigenvalues (and=20
>eigenvectors)
> returned by numpy.linalg.eigh?
>=20
> If I want to make sure the eigenvalues are in ascending=20
>order of
> magnitude should I sort them myself?
>=20
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AFAIK eigh is based on dsyevd.f
http://www.netlib.org/lapack/double/dsyevd.f. (real=20
symmetric)
http://www.netlib.org/lapack/complex16/zheevd.f (complex=20
Hermitian).
If INFO =3D 0, the eigenvalues are given in ascending order.

Please correct me if I get it wrong.

Nils