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From "Phil Steitz (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MATH-343) Brent solver doesn't throw IllegalArgumentException when initial guess has the wrong sign
Date Sat, 03 Apr 2010 03:43:27 GMT

     [ https://issues.apache.org/jira/browse/MATH-343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phil Steitz updated MATH-343:
-----------------------------

    Fix Version/s: 2.1

> Brent solver doesn't throw IllegalArgumentException when initial guess has the wrong
sign
> -----------------------------------------------------------------------------------------
>
>                 Key: MATH-343
>                 URL: https://issues.apache.org/jira/browse/MATH-343
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.0
>            Reporter: Volkan Aktas
>            Priority: Critical
>             Fix For: 2.1
>
>
> Javadoc for "public double solve(final UnivariateRealFunction f, final double min, final
double max, final double initial)" claims that "if the values of the function at the three
points have the same sign" an IllegalArgumentException is thrown. This case isn't even checked.

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