Is there a way in Ruby to determine the largest/smallest representable
Fixnum and Float?  Since Ruby levarages off the underlying C system this
will be architecture dependent.  I'm looking for something like Fixnum::MAX,
Fixnum::MIN and similarly for Floats.  

If it isn't currently builtin, it seems that as the language evolves, this
may be one of the dotting the 'i's and crossing the 't's issue.

Raja