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[Octave-bug-tracker] [bug #53438] tests: rand.cc: known fixed state test
From: |
Mike Miller |
Subject: |
[Octave-bug-tracker] [bug #53438] tests: rand.cc: known fixed state tests of randn and randg generators inaccurate on i686 |
Date: |
Fri, 23 Mar 2018 22:03:03 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0 |
Follow-up Comment #8, bug #53438 (project octave):
For future reference, this can be reproduced on x86_64 easily by building
Octave with "-mfpmath=387" added to CFLAGS and CXXFLAGS as mentioned in
comment #2.
The generators that are affected are randn and randg. The values produced by
randg are derived from randn values, and both involve floating point
multiplications. With a given fixed state, a user should get the same exact
_uniform_ random number sequence on any system, and those tests do pass.
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- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Mike Miller, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Mike Miller, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Rik, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Dmitri A. Sergatskov, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Dmitri A. Sergatskov, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Mike Miller, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Dmitri A. Sergatskov, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: 5 failing tests on i686 due to tolerance changes, Mike Miller, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: known fixed state tests of randn and randg generators inaccurate on i686, Mike Miller, 2018/03/23
- [Octave-bug-tracker] [bug #53438] tests: rand.cc: known fixed state tests of randn and randg generators inaccurate on i686,
Mike Miller <=