Sat, 06 Dec 1997 17:05:41 +0100 nipkow Got rid of some preds and replaced some n~=0 by 0<n.
Sat, 06 Dec 1997 16:48:39 +0100 nipkow Cleaned up arithmetic mess.
(0) -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip