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From "Phil Steitz (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (MATH-587) AbstractIntegerDistribution cumulativeProbablitity(int, int) implementation does not match API documentation
Date Sun, 12 Jun 2011 19:44:51 GMT

     [ https://issues.apache.org/jira/browse/MATH-587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phil Steitz closed MATH-587.
----------------------------

    Resolution: Not A Problem

Once the javadoc API descriptions were reverted to last release versions, the documentation
matches the implementation.  Sorry I was confused by the javadoc.  I added a standalone test
class confirming that the API contracts match the default impls.

> AbstractIntegerDistribution cumulativeProbablitity(int, int) implementation does not
match API documentation
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: MATH-587
>                 URL: https://issues.apache.org/jira/browse/MATH-587
>             Project: Commons Math
>          Issue Type: Bug
>            Reporter: Phil Steitz
>
> The documentation for this method says it computes p(x0 < X < x1), but the parameter
documentation inconsistently states that the bounds are "inclusive" and what it actually returns
is
> {code}
> cumulativeProbability(x1) - cumulativeProbability(x0 - 1);
> {code}
> which is p(x0-1 <= X < x1).
> In the code above, x0 - 1 should be replaced by x0 + 1.

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