[Haskell-cafe] Re: Why does the class called "Real" support only rationals, and not all reals?

DavidA polyomino at f2s.com
Mon Jun 4 04:07:20 EDT 2007

Yes, I'm afraid that you are understanding correctly. Annoying isn't it.

It is well-known (among Haskell mathematicians at least) that the numeric type 
classes in the prelude are broken.

Here's one proposal for a small step in the right direction:

But it really needs a mathematician to sit down and sort it out properly.

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