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https://issues.apache.org/jira/browse/MATH-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Neidhart resolved MATH-1039.
-----------------------------------
Resolution: Fixed
Added methods to the respective interfaces in commit
0d3545e5f68d024cd4a05724a15746d8dad986d2.
> Logarithmic probability and density calculations for the distributions
> ----------------------------------------------------------------------
>
> Key: MATH-1039
> URL: https://issues.apache.org/jira/browse/MATH-1039
> Project: Commons Math
> Issue Type: New Feature
> Reporter: Aleksei Dievskii
> Assignee: Phil Steitz
> Priority: Minor
> Labels: features, patch
> Fix For: 4.0
>
> Attachments: LOGDENSITY.patch
>
>
> A person working with fairly small probabilities and densities often employs
> their logarithms to increase precision and decrease the chance of an
> underflow. However, just taking a log of the probability() or density()
> return value doesn't necessarily solve the problem, as these methods
> themselves could have lost precision or underflowed. This patch introduces
> new logProbability() and logDensity() methods overriden for many relevant
> distribution. The patch also introduces tests of these new methods.
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