On May 21, 11:38 am, Mark Dickinson <[EMAIL PROTECTED]> wrote: > On SuSE 10.2/Xeon there seems to be a rounding bug for > floating-point addition: > > [EMAIL PROTECTED]:~> python > Python 2.5 (r25:51908, May 25 2007, 16:14:04) > [GCC 4.1.2 20061115 (prerelease) (SUSE Linux)] on linux2 > Type "help", "copyright", "credits" or "license" for more information.>>> a = > 1e16-2. > >>> a > 9999999999999998.0 > >>> a+0.999 # gives expected result > 9999999999999998.0 > >>> a+0.9999 # doesn't round correctly. > > 10000000000000000.0 > > The last result here should be 9999999999999998.0, > not 10000000000000000.0. Is anyone else seeing this > bug, or is it just a quirk of my system? > > Mark
I see it too -- http://mail.python.org/mailman/listinfo/python-list
