Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

Re: Motion 19.02 NO



On 2010-11-01 07:17:33 -0500, Ralph Baker Kearfott wrote:
> >   2.  when the midpoint of a (real) interval is exactly in the middle
> >  between  two machine numbers, then mid-rad presentation is not unique.
> 
> Actually, that's an interesting objection to mid-rad.  I find it
> analogous to the problem of defining rounding to nearest when
> the exact result is the midpoint between two machine numbers.  If
> we want reproducibility, we would specify it, but it wouldn't matter
> how we would specify it, just that we did specify it.

Users of mid-rad may prefer performance over reproducibility.

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)