[jira] [Updated] (MATH-623) Use implementation of JAMA for ArrayRealVector operators

["Arne Plöse (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MATH-623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arne Plöse updated MATH-623:
----------------------------

    Attachment: ArrayRealVector.diff

Here ist the diff with added testcase 

> Use implementation of JAMA for ArrayRealVector operators
> --------------------------------------------------------
>
>                 Key: MATH-623
>                 URL: https://issues.apache.org/jira/browse/MATH-623
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 3.0
>            Reporter: Arne Plöse
>            Priority: Minor
>         Attachments: ArrayRealVector.diff
>
>
> For instance the add(double[] v) fist clones the array, and then adds all entries of this.data to the result.
> JAMA uses the following approach create a empty result[] the assign the sum of each entry to the result. this is approximately 10 -20 % faster.
> I will provide a patch with some more enhancements/cleanups for this.
> in the test look for XXX: 
> the first number is the jama time the second the current algorithm.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira