[Haskell-cafe] Mystery of an Eq instance

Stijn van Drongelen rhymoid at gmail.com
Sat Sep 21 09:40:28 CEST 2013

On Sep 21, 2013 9:38 AM, "Colin Adams" <colinpauladams at gmail.com> wrote:
> On 21 September 2013 08:34, Stijn van Drongelen <rhymoid at gmail.com> wrote:
>> * As mentioned, there is a total order (Ord) on floats (which is what
you should be using when checking whether two approximations are
approximately equal), which implies that there is also an equivalence
relation (Eq).
> how do you get a total order when nan compares false with everything
including itself?

Good point. It should be a partial order.
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