[Python-Dev] Is PEP 237 final -- Unifying Long Integers and Integers

Gareth McCaughan gmccaughan at synaptics-uk.com
Wed Jun 22 17:10:27 CEST 2005


On Wednesday 2005-06-22 13:32, Nick Coghlan wrote:
> Gareth McCaughan wrote:
> > [Keith Dart:]
> >>By "normal" integer I mean the mathematical definition.
> > 
> > Then you aren't (to me) making sense. You were distinguishing
> > this from a unified int/long. So far as I can see, a unified int/long
> > type *does* implement (modulo implementation limits and bugs)
> > the "mathematical definition". What am I missing?
> 
> Hmm, a 'mod_int' type might be an interesting concept (i.e. a type 
> that performs integer arithmetic, only each operation is carried out 
> modulo some integer).
> 
> Then particular bit sizes would be simple ints, modulo the appropriate 
> power of two.

It might indeed, but it would be entirely the opposite of what
(I think) Keith wants, namely something that raises an exception
any time a value goes out of range :-).

-- 
g



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