Frederick Cheung wrote:

> It's to do with 
> http://groups.google.com/group/rubyonrails-core/browse_thread/thread/e546c5a2c3d82da5/8556c83c1d028eff
> 
> These methods used to be on Numeric, but did weird things with floats,
> so they were pulled out of Numeric and now only exist (in actual form)
> on Integer.

Thank you - just the information I was looking for.

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