"Tim Roberts" <(E-Mail Removed)> wrote:

>

>Thanks - you're probably right - just my intuition said to me that rather than calculating that the 13th root of 4021503534212915433093809093996098953996019232

>is 3221.2904208350265....

>there must be a quicker way of finding out its between 3221 and 3222....

>

>....but perhaps not.
Also, remember that the number you computed there is not really the 13th

root of 4021503534212915433093809093996098953996019232. When you convert

it to float to do the exponentiation, you're losing everything after the

15th significant digit. Of course, if all you're looking for is the

nearest integer, that's not very relevant.

Do you really need the absolute number? You could take log(x)/13 and work

with the log of the results. I suspect (without trying it) that's faster

than the exponentiation.

From one Tim Roberts to another.

--

Tim Roberts,

http://www.velocityreviews.com/forums/(E-Mail Removed)
Providenza & Boekelheide, Inc.