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Python very slow on the Sharp Zaurus

Alexandre Courbot alexandrecourbot at linuxgames.com
Mon Jul 22 17:30:24 EDT 2002 
> Tim Peters <tim.one at comcast.net> writes:
> > Python used to use float arithmetic to detect int mult overflow, but
> > that didn't work correctly on some 64-bit boxes.
> > 
> > It got replaced by over 100(!) lines of all-integer int mult
> > overflow-checking code, and I believe that's still in 2.1.3.
> > 
> > But that had an obscure endcase bug too, and it get replaced in 2.2
> > by a new float method that doesn't make unwarranted assumptions
> > about the relative sizes of C longs and C doubles, and usually gets
> > out quickly -- provided float arithmetic isn't pig slow.
> 
> Ouch!!  That doesn't sound so good for the Zaurus.

Yeah, I wonder if it's worth to profile the stuff! :)

Guys, I'll first test it with Python 2.1.3. Adonthell (the game I'm
porting) works with any Python >= 1.5.2, so if the problem can be solved
in the short-term by regressing to 2.1, that'll be fine for now. If the
differences are significant, then maybe we could consider to add another
interger-only checking method that would suit in the case of Arm
processors. I'll try to give you news about it tomorrow.

Thanks again for the relevant answers!

Alex.
-- 
http://www.gnurou.org
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