opCmp, [partial/total/pre]orders, custom floating point types etc.

[Ilya Yaroshenko via Digitalmars-d]

On Tuesday, 12 January 2016 at 18:27:15 UTC, John Colvin wrote:
> Background:
> Some important properties for binary relations on sets that are 
> somewhat similar to the normal ≤/≥ on the real numbers or 
> integers are:
>
> [...]

http://dlang.org/phobos/std_math.html#.cmp ? --Ilya