From: Andras Erdei (aerdei_at_[hidden])
Date: 2004-12-12 19:19:49
On Sun, 12 Dec 2004 17:53:08 +0000 (UTC), Mickey Moore <mgmoore_at_[hidden]> wrote:
>I will agree that it's much less obvious when you will get into trouble, since
>the numbers were of modest magnitude -- though still greater than sqrt(32768)
>which is a (very rough) indication of potential trouble.
this can be misleading: yes, you can add two rational<short>s
together if all their nums and dens are smaller than 181 (a
sufficient but not necessary condition); but to be able to
add the results of two additions, the limit goes down to 13,
then to 3, then to 1
>In this case the obvious solution is rational<long>
with long calculating the limits this way you get 46340, 215,
14, 3, 1 -- even in a very simple program containing a few
operators the arguments can only safely have the values zero
and one...
br,
andras