Arbitrary precision calculations

[Timothy R Evans]

catlee at my-deja.com writes:

> Hi,
> 
> I'm looking for a package that will let me do arbitrary precision
> arithmatic in python.  I've come across the real.py module written by
> Jurjen N.E. Bos, and it seems like a really nice module except for the
> fact that you can't compare two numbers for equality,inequality,etc.
> 
> Cheers,
> Chris
> 
> P.S. I found the real.py package by doing a search on www.deja.com for
> arbirary precision in comp.land.python
> 
> 
> Sent via Deja.com http://www.deja.com/
> Share what you know. Learn what you don't.

If I'm reading this right you want arbitrary precision integers right?
Just use the Python `Long' integer, created using the `long' function
or by placing an L after a literal number (e.g. 10L).  All standard
numerical operators ork on long intergers (if you're doing crypto
stuff then don't forget that `pow(X,Y,Z)' calucates X to the power of
Y, modulo Z efficiently.

--
Tim Evans