Re: Bounded and floating types

On Wed, Dec 05, 2007 at 09:18:38AM +0100, Ketil Malde wrote:

Stefan O'Rear writes:

...

It's rather worse than that.

Prelude> let nan = 0/0 Prelude> nan > nan False Prelude> nan < nan False Prelude> nan == nan False

And this begs the question:

Prelude> compare nan nan GT

So while NaN is greater than itself, it is at the same time not greater than itself?

There is a case to be made for Ord Double to use the trapping comparison operators. Stefan