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https://issues.apache.org/jira/browse/MATH-267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Dunning reopened MATH-267:
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The previous patch lost some comments from my original.
Also, I added a trigramma function.
> Need a digamma function
> -----------------------
>
> Key: MATH-267
> URL: https://issues.apache.org/jira/browse/MATH-267
> Project: Commons Math
> Issue Type: Bug
> Reporter: Ted Dunning
> Fix For: 2.0
>
> Attachments: Adds_digamma_function.patch, digamma.tgz
>
>
> A mahout summer of code student needed a digamma function with Apache
> permissions so I wrote one. It includes test cases, correct copyright and
> seems to work well. I don't know where in commons math this would go so I
> figured I would post this and ask for advice.
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