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https://issues.apache.org/jira/browse/MATH-727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luc Maisonobe resolved MATH-727.
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Resolution: Fixed
Fixed in subversion repository as of r1215524.
> too large first step with embedded Runge-Kutta integrators (Dormand-Prince
> 8(5,3) ...)
> --------------------------------------------------------------------------------------
>
> Key: MATH-727
> URL: https://issues.apache.org/jira/browse/MATH-727
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.0
> Reporter: Luc Maisonobe
> Assignee: Luc Maisonobe
> Fix For: 3.0
>
>
> Adaptive step size integrators compute the first step size by themselves if
> it is not provided.
> For embedded Runge-Kutta type, this step size is not checked against the
> integration range, so if the integration range is extremely short, this step
> size may evaluate the function out of the range (and in fact it tries
> afterward to go back, and fails to stop). Gragg-Bulirsch-Stoer integrators do
> not have this problem, the step size is checked and truncated if needed.
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