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[Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf)
From: |
Colin Macdonald |
Subject: |
[Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf) |
Date: |
Mon, 6 Nov 2017 00:43:05 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
Follow-up Comment #11, bug #52285 (project octave):
I also get the all-nans-with-zero-in-lower-right result on 2008b. But
strangely on 2014a, I get *all* nans:
>> inv(repmat(inf,[2,2]))
Warning: Matrix is singular, close to singular or badly scaled. Results may
be
inaccurate. RCOND = NaN.
ans =
NaN NaN
NaN NaN
>> inv(repmat(-inf,[3,3]))
Warning: Matrix is singular, close to singular or badly scaled. Results may
be
inaccurate. RCOND = NaN.
ans =
NaN NaN NaN
NaN NaN NaN
NaN NaN NaN
>> ver
MATLAB Version: 8.3.0.532 (R2014a)
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- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Rik, 2017/11/01
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Rik, 2017/11/03
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Colin Macdonald, 2017/11/03
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Rik, 2017/11/04
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Michael Godfrey, 2017/11/04
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Rik, 2017/11/04
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Michael Godfrey, 2017/11/04
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf),
Colin Macdonald <=
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Marco Caliari, 2017/11/06
- [Octave-bug-tracker] [bug #52285] inv(0) gives 0 (instead of inf), Dmitri A. Sergatskov, 2017/11/06