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From "Konstantin Berlin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-901) FastMath.sin is slow
Date Fri, 16 Nov 2012 17:08:14 GMT
Konstantin Berlin created MATH-901:
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             Summary: FastMath.sin is slow
                 Key: MATH-901
                 URL: https://issues.apache.org/jira/browse/MATH-901
             Project: Commons Math
          Issue Type: Bug
    Affects Versions: 3.1
         Environment: Mac OS 10.8.2, Java 7
            Reporter: Konstantin Berlin


The FastMath.sin (maybe other functions too) are not nearly as fast as some other libraries
that can be found on the internet.

The *much* faster code can be found here http://www.oliford.co.uk/phys/code/AlgorithmRepository/src/jafama/.

Max Absolute Error Apache vs JDK: 1.1102230246251565E-16
Max Absolute Error Alternative vs JDK: 5.551115123125783E-16
JDK Time: 0.698
Apache Time: 0.491
Alternative Time: 0.18

I will add my test code as soon as I figure out how.


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