19 Jan
2015
19 Jan
'15
2:16 a.m.
On Jan 18, 2015, at 1:02 PM, Andrew Barnert <abarnert@yahoo.com> wrote:.
I think the right answer there is to add a float_difference that follows the same rules as the IEEE/C/POSIX nextafter function and friends. (And also maybe to add nextafter and friends--note that decimal already has similar functions, but named with underscores.) With that, it's trivial to add ulps-based tests; without it, it's very hard.
And then ulps can be removed from the discussion on absolute and relative error.
Sounds good to me. -CHB