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https://issues.apache.org/jira/browse/NUMBERS-153?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitriy V. Golovashkin closed NUMBERS-153.
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Resolution: Implemented
> Gamma.digamma() and Gamma.trigamma() throw stack overflow exception
> -------------------------------------------------------------------
>
> Key: NUMBERS-153
> URL: https://issues.apache.org/jira/browse/NUMBERS-153
> Project: Commons Numbers
> Issue Type: Bug
> Components: gamma
> Affects Versions: 1.0-beta1
> Reporter: Dmitriy V. Golovashkin
> Priority: Major
> Fix For: 1.0
>
>
> {color:#0033b3}java.lang.StackOverflowError is thrown in{color}
> {code:java}
> double x = -10_000;
> double ans1 = Gamma.digamma(x); // stack overflow
> double ans2 = Gamma.trigamma(x); // stack overflow{code}
> It would be nice if the methods returned NaN / Infinity, rather than abort
> calculations (due to recursion gone wild).
> Please see the initial report in Commons Math3:
> https://issues.apache.org/jira/browse/MATH-1561
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