On Apr 7, 2005, at 13:27, Steve Kargl wrote: > Try -fdump-parse-tree. You've given more digits in y than > its precision. This is permitted by the standard. It appears > the gfortran frontend is taking y = 0.499999 and the closest > representable nubmer is y = 0.5. So, why does the test y < 0.5 yield true then?