On Fri, 4 Aug 2000, Eric G . Miller wrote: > I suggest going to comp.lang.c and checking the C FAQ. Specifically look > for the inherent problem of putting the same variable on both sides of a > relational operator: (x+y) > x In this case, a little algebra shows that all you need to check is y > 0. That's legal and defined. Cheers, Phil Mendelsohn -- Lottery: a tax on people who are bad at math