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From "Thomas Neidhart (JIRA)" <>
Subject [jira] [Commented] (MATH-1155) Speedup initialization of WellXXX rngs
Date Mon, 23 Feb 2015 21:41:11 GMT


Thomas Neidhart commented on MATH-1155:

I have taken your suggestion into account and committed an update patch in commit dc9fcd4140b3e200e4dad8d1a52a6f76b7de4d9c.
The getter have been renamed, although I am not particularly happy with the names.

> Speedup initialization of WellXXX rngs
> --------------------------------------
>                 Key: MATH-1155
>                 URL:
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 3.3
>            Reporter: Thomas Neidhart
>             Fix For: 4.0
>         Attachments: MATH-1155.patch
> As identified in MATH-1154, initialization of the WellXXX rngs is quite costly as some
internal arrays have to be computed.
> Most of these initializations are specific to the type of rng, e.g. Well19937a and will
not change afterwards, thus could be initialized in a static way.
> Due to implementation details, i.e. the relevant fields are declared protected in the
base class AbstractWell, such a change would not be backwards compatible and will have to
be postponed to 4.0

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