[Python-Dev] Fwd: summing a bunch of numbers (or "whatevers")
Wed, 23 Apr 2003 10:44:19 +0200
On Mon, Apr 21, 2003 at 05:23:25PM -0400, Raymond Hettinger wrote:
> > For the C implementation, consider bypassing operator.add
> > and calling the nb_add slot directly. It's faster and fulfills
> > the intention to avoid the alternative call to sq_concat.
> Forget I said that, you still need PyNumber_Add() to
> handle coercion and such. Though without some
> special casing it's going to be darned difficult to match
> the performance of a pure python for-loop (especially
> for a sequence of integers).
Why not move the integer add optimization from ceval.c into PyNumber_Add
Granted you have an extra call on the fast path, but on the other hand
* more code could benefit from this optimization
* you don't have code related to the same operation spread in several
* the ceval loop has a reduced footprint
Ludovic Aubry LOGILAB, Paris (France).
http://www.logilab.com http://www.logilab.fr http://www.logilab.org