[Haskell-cafe] instance Enum Double considered not entirely great?

[Felipe Almeida Lessa]

On Tue, Sep 20, 2011 at 7:38 PM, Maciej Marcin Piechotka
<uzytkownik2 at gmail.com> wrote:
> +1 for:
>
> class Eq a => IEEEEq a where
>    (<.) :: a -> a -> Bool
>    (>.) :: a -> a -> Bool

We already have this but it is hidden inside a library.  It's called
PartialOrd [1] and it's on the logfloat package.

  class PartialOrd a where
    cmp :: a -> a -> Maybe Ordering
    ...

http://hackage.haskell.org/packages/archive/logfloat/0.12.1/doc/html/Data-Number-PartialOrd.html

-- 
Felipe.