Fri, 01 Nov 2013 18:51:14 +0100 more simplification rules on unary and binary minus
haftmann [Fri, 01 Nov 2013 18:51:14 +0100] rev 54230
more simplification rules on unary and binary minus
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 tip