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From "Gilles (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-740) Some "FastMath" functions are slow
Date Thu, 09 Feb 2012 15:37:59 GMT
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
            Priority: Minor
             Fix For: 3.1


>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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