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From "Ted Dunning (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (MAHOUT-600) Reported test failure due to exact floating point comparison
Date Mon, 31 Jan 2011 17:50:32 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Dunning reassigned MAHOUT-600:
----------------------------------

    Assignee: Ted Dunning

> Reported test failure due to exact floating point comparison
> ------------------------------------------------------------
>
>                 Key: MAHOUT-600
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-600
>             Project: Mahout
>          Issue Type: Bug
>            Reporter: Ted Dunning
>            Assignee: Ted Dunning
>             Fix For: 0.5
>
>         Attachments: 0001-MAHOUT-600-Improves-floating-point-comparison-in-log.patch
>
>
> Jeremy Lewi kindly pointed this result from his machine out to us:
> {code}
> Test set: org.apache.mahout.math.VectorTest
> -------------------------------------------------------------------------------
> Tests run: 20, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.045 sec <<<
FAILURE!
> testLogNormalize(org.apache.mahout.math.VectorTest)  Time elapsed: 0.002 sec  <<<
FAILURE!
> java.lang.AssertionError: expected:<{2:0.5345224838248488,1:0.4235990463273581,0:0.2672612419124244}>
but was:<{2:0.5345224838248488,1:0.423599046327358,0:0.2672612419124244}>
> 	at org.junit.Assert.fail(Assert.java:91)
> 	at org.junit.Assert.failNotEquals(Assert.java:645)
> 	at org.junit.Assert.assertEquals(Assert.java:126)
> 	at org.junit.Assert.assertEquals(Assert.java:145)
> 	at org.apache.mahout.math.VectorTest.testLogNormalize(VectorTest.java:509)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> {code}
> I have a patch that cleans this up.  Will attach forthwith.

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