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https://issues.apache.org/jira/browse/MATH-636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luc Maisonobe resolved MATH-636.
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Resolution: Fixed
Fixed in subversion repository as of r1152280
> create solvers for Dfp based function
> -------------------------------------
>
> Key: MATH-636
> URL: https://issues.apache.org/jira/browse/MATH-636
> Project: Commons Math
> Issue Type: New Feature
> Reporter: Luc Maisonobe
> Assignee: Luc Maisonobe
> Fix For: 3.0
>
>
> When validating some regular computations, we often end up doing some
> comparison with higher accuracy reference data.
> The Dfp package is a wonderful tool for that. This package can already be
> used in some of our regular algorithms as it already implements the Field
> interface. However, Dfp instances cannot be used in solvers yet.
> Setting up solvers that would take Field based function is not possible, as
> solvers do need an absolute value method to check convergence, and an
> ordering relation for bracketing. However, no such restriction exist for Dfp.
> It is very easy to convert some existing solvers to have a Dfp version. As
> the main purpose is high accuracy, and as implementing function for Dfp is
> cumbersome, a high order method using function values only and no need for
> implementing derivatives such as depicted in MATH-635 is a good choice.
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