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[Octave-bug-tracker] [bug #60528] betaincinv throws error for some valid
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From: |
Markus Mützel |
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Subject: |
[Octave-bug-tracker] [bug #60528] betaincinv throws error for some valid inputs |
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Date: |
Sun, 22 Aug 2021 06:14:26 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36 Edg/92.0.902.78 |
Follow-up Comment #8, bug #60528 (project octave):
If the goal is to test if Octave's `betainc` and `betaincinv` behave like
inverse functions to each other even for these corner case input values, maybe
we could add BISTs that do that (additionally)?
If we compare the result of the function to fix values, I'd argue that these
values should be what one would expect from a "pure maths" point of view (not
including "arbitrary" round off errors). Otherwise, the BISTs might suggest an
error when an eventual change at some point in the future actually increases
the precision.
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