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https://issues.apache.org/jira/browse/MATH-479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb updated MATH-479:
----------------------
Attachment: Math479.patch
Patch to add test case against Math.signum(double) and fix for bug (also
simplifies the code)
> 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
> 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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