[issue936813] fast modular exponentiation
Mark Dickinson
report at bugs.python.org
Fri Feb 20 17:25:59 CET 2009
Mark Dickinson <dickinsm at gmail.com> added the comment:
By the way, I'd be interested to know if you (Trevor) have any thoughts on
the multiplication optimizations that are in the patch
30bit_longdigit13+optimizations.patch
in the issue 4258 discussion. These have been giving me some quite
spectacular speedups (4 or 5 times faster) for multiplication on
64-bit machines; smaller speedups on 32-bit. Currently, those speedups
render your earlier special-case-squaring patch obsolete; I wonder
whether there's a way to get the same speedup for squaring.
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