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https://issues.apache.org/jira/browse/MATH-726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13195726#comment-13195726
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Luc Maisonobe commented on MATH-726:
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OK then, I'll take care of this issue and will import Nabla interfaces in Math,
trying to merge the two interfaces.
I don't think thee are so much differences. The additional input like
tolerances can be specified in the Ridders constructor, just like absolute and
relative accuracy are set up in solvers. We could also merge the various Nabla
finite differences schemes into one class and use a constructor parameter to
choose the number of points in the finite differences. The max evaluations in
the would not be used in finite differences.
Here is what I intend to do:
* replace Nabla UnivariateDifferentiable by Math UnivariateFunction
* adapt Nabla UnivariateDerivative to the change above
* keep Nabla DifferentialPair as is
* adapt UnivariateDifferentiator to have an additional max evaluation
parameter, in the Solvers spirit
> 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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