http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48906
--- Comment #34 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> 2011-06-10 16:22:20 UTC --- Additional note: The standard states: "Let N be the magnitude of the internal value" The internal value is to be used to determine the conversion to F formatting. I think this adds to my point. I wonder if the standards committee knew the thresholds selected do not have an exact binary representation so that the internal values will always be above or below it.
