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https://issues.apache.org/jira/browse/MATH-343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12837747#action_12837747
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Luc Maisonobe commented on MATH-343:
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You are right.
I have removed the unreachable code and committed it in the subversion
repository
Thanks again
> 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
>
> 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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