1.0 / 0.0 is not infinite

"Henk-Jan van Tuyl" <[email protected]> Sat, 29 Mar 2008 23:17:38 +0100

Newsgroups	gmane.comp.lang.haskell.hugs.bugs
Message-ID	<[email protected]>

I tried:
   Hugs> 1.0 / 0.0
   1.#INF

   Hugs> isInfinite $ 1.0 / 0.0
   False
in WinHugs (Version: Sep 2006)

When the same is entered in GHCi, the result is True, as expected.

The definition of isInfinite in Prelude is:
   isInfinite  _ =3D False

An better definition could be as in the following:
   Hugs> let isInfinite' x =3D x =3D=3D (1.0 / 0.0) in isInfinite' (3.14=
16 / 0.0)
   True


-- =

Met vriendelijke groet,
Henk-Jan van Tuyl


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