On 11/15/2012 01:35 PM, Joe Marshall wrote:
On Thu, Nov 15, 2012 at 12:13 PM, Dmitry Pavlov <[email protected] <mailto:[email protected]>> wrote: > "In hindsight, the use of quad precision appears to have been overly > conservative for this problem" Might be, and may still be, but the precision of astronomical observation has grown much since the time the paper was written, and so have the requirements to the ephemeris. It seems to me that before you just "throw bits at it" that you might want to estimate the error.
One easy way to do that is throw more bits at it, round to fewer bits, and see what the absolute or relative difference is. I do that using bigfloats all the time.
I know you probably meant error analysis, and that's also a good idea. :) Neil ⊥ ____________________ Racket Users list: http://lists.racket-lang.org/users
