On Tue, 27 Nov 2007 14:41:59 -0500 Isaac Dupree <[EMAIL PROTECTED]> wrote:
> Henning Thielemann wrote: > > On Mon, 26 Nov 2007, Jason Dusek wrote: > > > >> Among numeric types, it seems that only integer types are Bounded. > > > > Maybe because IEEE format supports Infinity? > > therefore, maxBound is Infinity and minBound negative infinity? Using Infinity would go against the meaning of Enum. In the Double/Float types, succ and pred mean "add/subtract 1.0", as opposed to the unit of least precision. In fact, succ and pred lose meaning once the precision of the floats exceeds a certain value. > until (\x -> x == succ x) succ 1.0 :: Float 1.6777216e7 It would be interesting to have an enumeration for Double/Float that goes from -Infinity to Infinity, reaching every single number on the way. Josh Lee _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
