Sat, 15 May 2010 17:59:06 +0200 wenzelm incorporated further conversions and conversionals, after some minor tuning;
Sat, 15 May 2010 15:31:33 +0200 wenzelm eliminated redundant runtime checks;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip