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. -- Meador
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