is_predicate_p?

[Kaveh R. Ghazi]

 > From: Tim Hollebeek <tim@hollebeek.com>
 > 
 > > | FWIW, I also think we should standardize on all of them returning
 > > | bool. 
 > > 
 > > I think that was agreed upon, in past discussions.
 > 
 > It might also be worthwhile insisting that they be pure.
 > -Tim

Unfortunately, that's almost impossible given our various "checking"
functions make unpure noreturn calls when an error is found.

		--Kaveh
--
Kaveh R. Ghazi			Director of Systems Architecture
ghazi@caip.rutgers.edu		Qwest Solutions