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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MATH-479) FastMath.signum(-0.0) does not agree with Math.signum(-0.0) ; no tests for signum
Date Sat, 15 Jan 2011 01:35:45 GMT

     [ https://issues.apache.org/jira/browse/MATH-479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebb updated MATH-479:
----------------------

    Affects Version/s: 3.0
                       2.2

> FastMath.signum(-0.0) does not agree with Math.signum(-0.0) ; no tests for signum
> ---------------------------------------------------------------------------------
>
>                 Key: MATH-479
>                 URL: https://issues.apache.org/jira/browse/MATH-479
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.2, 3.0
>            Reporter: Sebb
>         Attachments: Math479.patch
>
>
> There are no unit tests for FastMath.signum(double) as yet.
> Here is one that should work, but fails:
> {code}
> @Test
> public void testSignum() {
>     Assert.assertTrue(Double.valueOf(FastMath.signum(+0.0)).equals(Double.valueOf(Math.signum(+0.0))));
// OK
>     Assert.assertTrue(Double.valueOf(FastMath.signum(-0.0)).equals(Double.valueOf(Math.signum(-0.0))));
// FAILS
> }
> {code}

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