On 12/17/13 5:58 PM, "Ola Fosheim Grøstad"
<[email protected]>" wrote:
On Tuesday, 17 December 2013 at 21:57:54 UTC, Andrei Alexandrescu wrote:
In an interval arithmetic approach numbers would compare actually
equal, i.e. 10 == IntervalInt(5, 100) would be true.
Why is that? I would think that 10 == Interval(10,10), but
interval(5,100).contains(10) ?
Yah, defining == my way would make it non-transitive.
True interval arithmetic is difficult to
implement though, since !(a<b) does not imply (a>=b) if I got it right…
I didn't peruse the wikipedia page in detail but it seems a lot of
interval arithmetic is well-defined.
So you you might have to introduce a tri-boolean type
That would be good too for distinct reasons.
Andrei
