.. agreed but this looks too awful (and is mostly a joke!)
return a >= b.nextDown.nextDown.nextDown.nextDown && a <= b.nextUp.
nextUp.nextUp.nextUp
Thanks, friends, for your insights and info .. Gavin
On Thu, Jun 29, 2017 at 3:30 PM, Taylor Swift via swift-users <
swift-users@swift.org>
I should also point out:
(a) your code can be somewhat simpler in Swift. I would probably write
something along the lines of:
func almostEqual(_ a: T, _ b: T) -> Bool {
return a >= b.nextDown && a <= b.nextUp
}
(b) one ULP is almost never a tolerance you want to use. It’s much too small
I've spent a fascinating evening and morning in the arcane depths of
floating point, specifically researching the comparison of two floating
point numbers. I pretty much understand how to do this with a combination
of 'epsilon' and 'ULPs' after reading this
