Mark Dickinson added the comment:
In case it's useful, see issue #1682 for my earlier Lehmer gcd implementation.
At the time, that approach was dropped as being premature optimisation.
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Antoine Pitrou added the comment:
If Python grows an optimized implementation, how about exposing it in the math
module?
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Mark Dickinson added the comment:
If Python grows an optimized implementation, how about exposing it in the
math module?
+1.
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Stefan Behnel added the comment:
That's what the patch does anyway. +1
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Antoine Pitrou added the comment:
Hmm... which patch?
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Stefan Behnel added the comment:
http://bugs.python.org/file9486/lehmer_gcd.patch
(see #1682)
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Changes by Wolfgang Maier wolfgang.ma...@biologie.uni-freiburg.de:
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New submission from Stefan Behnel:
fractions.gcd() is required for normalising numerator and denominator of the
Fraction data type. Some speed improvements were applied to Fraction in issue
22464, now the gcd() function takes up about half of the instantiation time in
the benchmark in issue
