[Octave-bug-tracker] [bug #53299] Several rand/randn bugs with state/seed behavior.

[Mike Miller]

Update of bug #53299 (project octave):

                Severity:              3 - Normal => 2 - Minor              
              Item Group:        Incorrect Result => Documentation          
                  Status:                    None => Confirmed              

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Follow-up Comment #16:

So can we say that this bug is about documenting the following two
peculiarities:

1. rand('state', 'reset') seems to not depend on the system clock, but
rand('seed', 'reset') does depend on the integer value of the system clock
(same goes for the other rand* functions).

2. rand('seed', ...) switches the internal algorithm for *all* of the rand
functions. This is documented in the section of the manual describing the rand
functions, but not in the rand doc strings themselves.

Does that summarize the issues here?

The startup random state bug I found is now bug #53300.

I agree with deego, it might be possible to turn the rand('seed', ...) style
calls into wrappers for the new algorithm and just remove the old algorithms
completely. There might still be some behavioral compatibility issues to think
about. That could be tracked in a separate bug report or project.

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