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[Octave-bug-tracker] [bug #47214] isnan and isinf problems with C++11 an
From: |
Mike Miller |
Subject: |
[Octave-bug-tracker] [bug #47214] isnan and isinf problems with C++11 and gcc 4 |
Date: |
Sun, 3 Sep 2017 16:09:46 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
Update of bug #47214 (project octave):
Status: Confirmed => Wont Fix
Open/Closed: Open => Closed
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Follow-up Comment #7:
I am still building Octave with gcc 4.8 on Ubuntu 14.04, and the two tests
mentioned in this bug report do fail.
I think the test failures are clear enough and point to bug #47775, so I don't
think there's any reason to keep this open. It's a won't fix, system libraries
have already fixed this, older systems will be updated eventually and this
will be resolved.
This is the output with a gcc 4.8 build from a couple days ago:
>> test libinterp/corefcn/sparse-xpow.cc-tst
***** assert <47775> (sparse (2i) .^ [3, 4], sparse ([-0-8i, 16]))
!!!!! known bug: http://octave.org/testfailure/?47775
ASSERT errors for: assert (sparse (2i) .^ [3, 4],sparse ([-0 - 8i, 16]))
Location | Observed | Expected | Reason
(1) -1.46958e-15-8i 0-8i Abs err 2.3054e-15 exceeds tol 0
(2) 16-3.91887e-15i 16+0i Abs err 4.3027e-15 exceeds tol 0
PASSES 1 out of 2 tests (1 known bug)
>> test realpow
***** assert <47775> (realpow (1i,2), -1)
!!!!! known bug: http://octave.org/testfailure/?47775
realpow: produced complex result
PASSES 7 out of 8 tests (1 known bug)
I think it's pretty clear that this is an accuracy issue and the link to the
relevant bug report is provided.
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