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List:       jakarta-commons-dev
Subject:    [jira] [Commented] (MATH-1262) Heap overflow in org.apache.commons.math4.special.BesselJ
From:       "Otmar Ertl (JIRA)" <jira () apache ! org>
Date:       2015-08-30 18:58:45
Message-ID: JIRA.12858643.1440514192000.205865.1440961125725 () Atlassian ! JIRA
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    [ https://issues.apache.org/jira/browse/MATH-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14721676#comment-14721676 \
] 

Otmar Ertl commented on MATH-1262:
----------------------------------

This [paper|http://www.cl.cam.ac.uk/~jrh13/papers/bessel.pdf] could be interesting.

> Heap overflow in org.apache.commons.math4.special.BesselJ
> ---------------------------------------------------------
> 
> Key: MATH-1262
> URL: https://issues.apache.org/jira/browse/MATH-1262
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: Neil Walkinshaw
> Priority: Minor
> Labels: newbie, performance
> 
> This test case:
> {code:java}
> import org.apache.commons.math4.special.BesselJ;
> public class BesselJHeapBug {
> public static void main(String[] args) {
> BesselJ.value(1182054491, 3.589635306407856E-8D);
> }
> }
> {code}
> throws the following exception:
> {code}
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
> 	at org.apache.commons.math4.special.BesselJ.rjBesl(BesselJ.java:247)
> 	at org.apache.commons.math4.special.BesselJ.value(BesselJ.java:161)
> 	at BesselJHeapBug.main(BesselJHeapBug.java:5)
> {code}



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