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Posted to issues@commons.apache.org by "charles sitbon (JIRA)" <ji...@apache.org> on 2015/06/21 13:50:00 UTC

[jira] [Created] (MATH-1238) NoBracketingException send with valid brackets

charles sitbon created MATH-1238:
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             Summary: NoBracketingException send with valid brackets
                 Key: MATH-1238
                 URL: https://issues.apache.org/jira/browse/MATH-1238
             Project: Commons Math
          Issue Type: Bug
    Affects Versions: 3.5
            Reporter: charles sitbon
            Priority: Minor


The brent solver sometimes send a NoBracketingException with valid brackets : example for a beta distribution with large Beta (285) and alpha around 15
Exception in thread "main" org.apache.commons.math3.exception.NoBracketingException: function values at endpoints do not have different signs, endpoints: [0, 1], values: [-0.15, 0.85]

the exception is actually caused by the yinitial which is Nan



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