On Sun, Feb 28, 2010 at 1:39 AM, Greg Ewing <greg.ew...@canterbury.ac.nz> wrote: > Meador Inge wrote: > >> 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? > > It's not precision that's the issue, it's that the number > base is different. That affects which numbers can > be represented exactly, and how results that can't be > represented exactly are rounded. > > I would be very surprised if there is a way of configuring > the Decimal type so that it gives identical results to that > of any IEEE binary floating point type, including rounding > behaviour, denormalisation, etc.
I'd be astonished. :) Mark _______________________________________________ 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
