LAPACK problem affecting full SVD, xGESDD (Octave 4.4)

octave-maintainers

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

LAPACK problem affecting full SVD, xGESDD (Octave 4.4)

From:	Tim Mitchell
Subject:	LAPACK problem affecting full SVD, xGESDD (Octave 4.4)
Date:	Wed, 23 Jan 2019 17:00:37 +0100 (CET)

Dear Octave developers,

Last night I found a bad bug when computing a full SVD using xGESDD. On certain problems, the computed singular values can be vastly different when also requesting singular vectors.

I've already opened an issue on LAPACK's Github page so I will just link to that for more details:

https://github.com/Reference-LAPACK/lapack/issues/316

Best regards,

Tim Mitchell

[Prev in Thread]

Current Thread

[Next in Thread]

LAPACK problem affecting full SVD, xGESDD (Octave 4.4), Tim Mitchell <=
- Re: LAPACK problem affecting full SVD, xGESDD (Octave 4.4), Rik, 2019/01/24
  - Re: LAPACK problem affecting full SVD, xGESDD (Octave 4.4), Tim Mitchell, 2019/01/24

Prev by Date: feval vs. Ffunction_name in C++
Next by Date: Re: There are something difference between MATLAB and Octave.
Previous by thread: feval vs. Ffunction_name in C++
Next by thread: Re: LAPACK problem affecting full SVD, xGESDD (Octave 4.4)
Index(es):
- Date
- Thread