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  1. Commons Math
  2. MATH-740 Some "FastMath" functions are slow
  3. MATH-901

FastMath.sin is slow

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Details

    • Sub-task
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 3.0
    • 4.X
    • None
    • None

    • Mac OS 10.8.2, Java 7

    Description

      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.

      Attachments

        1. SineTest.java
          2 kB
          Konstantin Berlin

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            Unassigned Unassigned
            kberlin Konstantin Berlin
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            Dates

              Created:
              Updated: