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[Octave-bug-tracker] [bug #58800] BIST for rng sometimes fails


From: Markus Mützel
Subject: [Octave-bug-tracker] [bug #58800] BIST for rng sometimes fails
Date: Wed, 22 Jul 2020 16:00:30 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36 Edg/84.0.522.40

Follow-up Comment #3, bug #58800 (project octave):

I can't reproduce the bug here. If I call "test rng" in a loop all 20 tests
pass each time.

I'm not an expert in that field. And I don't know if it is important that the
seed is different each time the rng is shuffled (or the state or seed of
"rand" is reset). Maybe a short pause in the BIST is good enough.

The documentation of rand contains this:
> The state or seed of the generator can be reset to a new random value using
the @qcode{"reset"} keyword.
The word "new" sounds to me like the seed should be different after
consecutive calls.

If I recall correctly, Rik was working on the rng in the past.
@Rik: Could you please comment on whether it is worth diving deeper into this?

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