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Posted to issues@commons.apache.org by "Thomas Neidhart (JIRA)" <ji...@apache.org> on 2013/03/21 08:17:15 UTC

[jira] [Moved] (MATH-952) Array2DRowMatrix#copySubMatrix could be improved for performance

     [ https://issues.apache.org/jira/browse/MATH-952?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Neidhart moved LOGGING-150 to MATH-952:
----------------------------------------------

        Key: MATH-952  (was: LOGGING-150)
    Project: Commons Math  (was: Commons Logging)
    
> Array2DRowMatrix#copySubMatrix could be improved for performance
> ----------------------------------------------------------------
>
>                 Key: MATH-952
>                 URL: https://issues.apache.org/jira/browse/MATH-952
>             Project: Commons Math
>          Issue Type: Improvement
>            Reporter: Thomas Neidhart
>            Priority: Minor
>
> Currently, the 2 copySubMatrix methods are inherited from AbstractRealMatrix where the copy is done element by element. In the case of an Array2DRowMatrix this can be significantly improved by using System.arraycopy similar as the setSubMatrix method already does.

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