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[Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix
From: |
John W. Eaton |
Subject: |
[Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix |
Date: |
Fri, 20 Nov 2020 10:13:44 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 |
Follow-up Comment #7, bug #59488 (project octave):
In addition to matrices of zeros, do we also need to have special cases for
matrices that contain Inf or NaN? For example, I see the following:
octave> x = sprand (20, 20, 0.1); x(10) = NaN; eigs (x, 1)
DLASCL: parameter number 4 is invalid
error: Fortran procedure terminated by call to XERBLA
error: called from
eigs at line 285 column 20
octave> x = sprand (20, 20, 0.1); x(10) = Inf; eigs (x, 1)
error: __eigs__: eigs: error in dneupd: DNAUPD did not find any eigenvalues to
sufficient accuracy.
This should not happen. Please, see
https://www.gnu.org/software/octave/bugs.html, and file a bug report
error: called from
eigs at line 285 column 20
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- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, JD, 2020/11/19
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/19
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, JD, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Philip Nienhuis, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Markus Mützel, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, JD, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, John W. Eaton, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix,
John W. Eaton <=
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, JD, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, John W. Eaton, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/20
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, JD, 2020/11/25
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/25
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/25
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Rik, 2020/11/25
- [Octave-bug-tracker] [bug #59488] eigs error in dsaupd for zero matrix, Kai Torben Ohlhus, 2020/11/26