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https://issues.apache.org/jira/browse/MATH-1083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856609#comment-13856609
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Andrew Brampton commented on MATH-1083:
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Sebb/Luc, thanks for pointing out the complexities in "0/0". I'll close this
ticket as I now believe the current behavior is correct (that is to throw an
exception while parsing 0/0).
I am going to reach out to the other library that is generating "0/0" (FFmpeg
for reference), and ask them to just output 0. In the mean time, my temporary
hack is to check the string is "0/0" before handling it off to the Fraction
constructor.
> Fraction - Allow zero denominator if numerator is also zero
> -----------------------------------------------------------
>
> Key: MATH-1083
> URL: https://issues.apache.org/jira/browse/MATH-1083
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 3.1
> Reporter: Andrew Brampton
> Priority: Minor
> Labels: Fraction
>
> The Fraction constructor rejects a denominator of zero. However, while trying
> to parse some Strings generated by another program, I encountered a fraction
> "0/0". I would say that's ambiguous as to if that's valid, but some people
> would agree the answer is zero.
> So, would it be possible to allow a zero denominator if the numerator is also
> zero. I'd be happy to provide a patch.
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