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From "Luc Maisonobe (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (MATH-291) ode.nonstiff.AdaptiveStepsizeIntegrator.filterStep(double h, boolean forward, boolean acceptSmall) can generate misleading Exception message
Date Fri, 04 Sep 2009 09:47:57 GMT

     [ https://issues.apache.org/jira/browse/MATH-291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Luc Maisonobe resolved MATH-291.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1

fixed in subversion repository as of r81132
an exponential format has been used to cope with very small steps
thanks for the report and the fix proposal

> ode.nonstiff.AdaptiveStepsizeIntegrator.filterStep(double h, boolean forward, boolean
acceptSmall) can generate misleading Exception message
> --------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MATH-291
>                 URL: https://issues.apache.org/jira/browse/MATH-291
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 2.0
>            Reporter: Sebb
>             Fix For: 2.1
>
>
> ode.nonstiff.AdaptiveStepsizeIntegrator.filterStep(double h, boolean forward, boolean
acceptSmall) can generate misleading Exception message, for example:
> org.apache.commons.math.ode.IntegratorException: minimal step size (0) reached, integration
needs 0
> This is because the message uses {0} and {1} to report the value of doubles.
> The code should really use a number format which allows for more decimal places, e.g.
> "minimal step size ({0,number,#.#########}) reached, integration needs {1,number,#.##########}",

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