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From "Gilles (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-726) Ridders derivative
Date Mon, 30 Jan 2012 00:27:10 GMT

    [ https://issues.apache.org/jira/browse/MATH-726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13195890#comment-13195890
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Gilles commented on MATH-726:
-----------------------------

bq. The additional input like tolerances can be specified in the Ridders constructor, [...]

This sentence makes me think that we don't understand each other: the tolerance currently
_is_ passed in the constructor. It is the method that computes the derivative (which takes
additional parameters and returns a {{double}} in "RiddersFirstDerivative", while in "nabla"
I think that the equivalent method would return a "function" object).

Anyways, this should not be a blocking issue, while at the same time, we should probably not
jump too quickly to a conclusion concerning the API (here and there). So probably better to
leave this for later.

                
> 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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