20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff 
20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff  diff to current 
20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff  diff to current 
20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff  diff to current 
20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff  diff to current 
20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff  diff to current 
20100930 
Jim Pryor  tweaked arithmetic 
blob  commitdiff  diff to current 
20100930 
Jim Pryor  added a bunch of math etc 
blob  commitdiff  diff to current 
