bugGNU Octave - Bugs: bug #66995, (tisean) __henon__.cc output...

 
 

bug #66995: (tisean) __henon__.cc output inconsistent across platforms

Submitter:  Dmitri A. Sergatskov <dasergatskov>
Submitted:  Sun 06 Apr 2025 10:02:07 PM UTC
   
 
Category:  Octave Package Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Inaccurate Result
Status:  None Assigned to:  None
Originator Name:  Open/Closed:  * Open
Release:  * dev Release: 
Operating System:  * Any Fixed Release:  None
Planned Release:  None
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Sun 06 Apr 2025 10:02:07 PM UTC, original submission:  

Currently "pkg test tisean" shows 33 FAILed tests.
Most of them (30) are due to "henon ()" produces data points which are different from expected (though the data does look like Henon Map). That data are used as input in many tests.
I found that I can match expected data if I disable optimization in the iterative step of _hanon_.cc function. I think this change should also make results more reproduciable across different platforms/compilers/compiler optimizations.
With that diff applied number of failures reduces to 3 (on x86_64 linux).

(file henon_disable_opt.diff)

Dmitri.
--


Dmitri A. Sergatskov <dasergatskov>

 

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    Date Changed by Updated Field Previous Value => Replaced by
    2025-04-06 dasergatskov Attached File- Added henon_disable_opt.diff, #57106

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