[
https://issues.apache.org/jira/browse/MATH-1241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Thomas Neidhart resolved MATH-1241.
-----------------------------------
Resolution: Fixed
Fix Version/s: 3.6
4.0
Fixed in the following commits:
* 4.0: 471e6b078a7891aea99b77f200e828
* 3.6: 229232829c6d8741138decf27c4909
Now the Gamma.digamma and trigamma methods will propagate the input argument if
it is not a real value.
Thanks for the report!
> Digamma calculation produces SOE on NaN argument
> ------------------------------------------------
>
> Key: MATH-1241
> URL: https://issues.apache.org/jira/browse/MATH-1241
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.5
> Reporter: Aleksei Dievskii
> Priority: Minor
> Fix For: 4.0, 3.6
>
>
> Digamma doesn't work particularly well with NaNs.
> How to reproduce: call Gamma.digamma(Double.NaN)
> Expected outcome: returns NaN or throws a meaningful exception
> Real outcome: crashes with StackOverflowException, as digamma enters infinite
> recursion.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
