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Posted to issues@commons.apache.org by "Gilles Sadowski (Jira)" <ji...@apache.org> on 2021/06/04 11:33:00 UTC

[jira] [Updated] (MATH-740) Some "FastMath" functions are slow

     [ https://issues.apache.org/jira/browse/MATH-740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gilles Sadowski updated MATH-740:
---------------------------------
    Fix Version/s:     (was: 4.0)
                   4.X

> Some "FastMath" functions are slow
> ----------------------------------
>
>                 Key: MATH-740
>                 URL: https://issues.apache.org/jira/browse/MATH-740
>             Project: Commons Math
>          Issue Type: Wish
>            Reporter: Gilles Sadowski
>            Priority: Minor
>             Fix For: 4.X
>
>         Attachments: jafamatests.zip
>
>
> From the two benchmarks we currently have in "FastMathTestPerfomance", we have that the following functions are much slower in "FastMath" than in either "Math" or "StrictMath" (the performance *loss*, for each of the benchmarks, is given in parentheses):
> * log10 (46%, 36%)
> * log1p (68%, 112%)
> * tan (11%, 61%)
> * atan (26%, 125%)
> * atan2 (44%, 40%)



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