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Posted to issues@commons.apache.org by "Gilles (Jira)" <ji...@apache.org> on 2019/09/02 10:55:00 UTC
[jira] [Resolved] (MATH-1496) An error in Gamma.java
[ https://issues.apache.org/jira/browse/MATH-1496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gilles resolved MATH-1496.
--------------------------
Resolution: Won't Fix
Class does not exist anymore in the development version (4.0-SNAPSHOT) of Commons Math.
Fix was applied in the replacement code that is now in the Commons Numbers project (see previous comment).
> An error in Gamma.java
> ----------------------
>
> Key: MATH-1496
> URL: https://issues.apache.org/jira/browse/MATH-1496
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.6.1
> Reporter: Xi Chen
> Priority: Major
>
> {noformat}
> if (x >= C_LIMIT) {
> // use method 4 (accurate to O(1/x^8)
> double inv = 1 / (x * x);
> // ...
> return FastMath.log(x) - 0.5 / x - inv * ((1.0 / 12) + inv * (1.0 / 120 - inv / 252));
> }
> {noformat}
> Line 463:
> {code}
> return FastMath.log(x) - 0.5 / x - inv * ((1.0 / 12) + inv * (1.0 / 120 - inv / 252));
> {code}
> Is it should be:
> {code}
> return FastMath.log(x) - 0.5 / x - inv * ((1.0 / 12) - inv * (1.0 / 120 - inv / 252));
> {code}
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