[Haskell-cafe] Ord/Ix and Bounded?

Akhra Gannon tanuki at gmail.com
Sun Apr 17 01:29:09 UTC 2022

Granted Double doesn't have Bounded, but consider a type representing a
sigmoid transformation. minBound==0.0, maxBound==1.0, but NaN could still
be in play.

On Sat, Apr 16, 2022, 6:24 PM Akhra Gannon <tanuki at gmail.com> wrote:

> NaN violates this. Of course floats are rife with broken instances to
> begin with, but in this case it might be important?
> On Sat, Apr 16, 2022, 6:06 PM Zemyla <zemyla at gmail.com> wrote:
>> Are there any laws relating Bounded to Ord and Ix? For instance, any
>> reasonable type should say
>> minBound <= x == True for all x
>> maxBound >= x == True for all x
>> inRange (minBound, maxBound) x == True for all x
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