http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47146
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-01-01 18:21:01 UTC --- (In reply to comment #0) > Casting and rounding seems to be a problem. Please be more specific. Do you understand how floating point works? Do you know that "0.39 * 100" has type double, not float, so has more precision (and a different value) than "(float)0.39 * 100" ? If you use doubles, or consistently use floats (not a mix of floats and doubles) then you get consistent results
