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From "Phil Steitz (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-726) Ridders derivative
Date Fri, 16 Dec 2011 16:16:32 GMT

    [ https://issues.apache.org/jira/browse/MATH-726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171044#comment-13171044
] 

Phil Steitz commented on MATH-726:
----------------------------------

+1 to moving the [nabla] numerics code into [math] and standardizing on the [nabla] API (which
will become the [math] API that [nabla] will depend on). If the API is not to everyone's liking,
we can change it.  The relevant classes are in o.a.c.nabla.numerical and o.a.c.nabla.core
in the [nabla] sandbox svn, per Luc's links above.

Might be best to postpone this until post-3.0, as the package additions could be done in 3.1
without breaks; but I would personally be OK with a lift and load from [nabla] (along with
the proposed Ridder's impl) for 3.0 if someone is willing to do the work.
                
> Ridders derivative
> ------------------
>
>                 Key: MATH-726
>                 URL: https://issues.apache.org/jira/browse/MATH-726
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Gilles
>            Assignee: Gilles
>            Priority: Minor
>              Labels: features
>             Fix For: 3.0
>
>         Attachments: RiddersFirstDerivative.java
>
>
> Implementation of the numerical first derivative, as described in:
> {noformat}
> Accurate computation of F'(x) and F'(x) F''(x)
> C. J. F. Ridders
> Adv. Eng. Software, 1982, Vol 4, No. 2
> {noformat}

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