Meador Inge schrieb: > On Fri, Feb 26, 2010 at 4:08 PM, Greg Ewing > <greg.ew...@canterbury.ac.nz>wrote: > >> Meador Inge wrote: >> >> 3. Using Decimal keeps the desired precision, >>> >> >> Well, sort of, but then you end up doing arithmetic in >> decimal instead of binary, which could give different >> results. >> > > Even with the user-defined precision capabilities of the 'Decimal' class? > In other words, can I create an instance of a 'Decimal' that behaves (in all > operations: arithmetic, comparison, etc...) exactly as the extended double > precision type offered by a given machine? > > Maybe the solution is to give ctypes long double objects >> the ability to do arithmetic? >> > > Maybe, but then we would have to give all numeric 'ctypes' the ability to do > arithmetic -- which may be more than we want.
See issue 887237: http://bugs.python.org/issue887237 -- Thanks, Thomas _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
