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Date: Mon, 17 Aug 2015 11:32:45 +0000 (UTC)
From: "Gilles (JIRA)" <jira@apache.org>
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Subject: [jira] [Resolved] (MATH-1256) Interval class upper and lower check
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     [ https://issues.apache.org/jira/browse/MATH-1256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gilles resolved MATH-1256.
--------------------------
       Resolution: Fixed
    Fix Version/s: 3.6
                   4.0

Thanks for the report.

Boundary check added in the following commits:
41f297809965523fcd021bef20b304b3584d9b4f (4.0)
eb8727f9c64f286d44bbcc1d19f96408ea5a385c (3.6)


> Interval class upper and lower check
> ------------------------------------
>
>                 Key: MATH-1256
>                 URL: https://issues.apache.org/jira/browse/MATH-1256
>             Project: Commons Math
>          Issue Type: Bug
>            Reporter: Gunel Jahangirova
>            Priority: Minor
>             Fix For: 4.0, 3.6
>
>
> In class Interval, which is in the package org.apache.commons.math4.geometry.euclidean.oned it is possible to pass the value for variable upper  less than the value of variable lower, which is logically incorrect and  also causes the method getSize() to return negative value.
> For example:
>  @Test
>   public void test1()  throws Throwable  {
>       Interval interval0 = new Interval(0.0, (-1.0));
>       double double0 = interval0.getSize();
>       assertEquals((-1.0), double0, 0.01D);
>   }


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