python decimal library dmath.py v0.3 released
Stefan Krah
stefan at bytereef.org
Tue Mar 4 16:35:48 EST 2014
[I found this via the python-ideas thread]
Wolfgang Maier <wolfgang.maier <at> biologie.uni-freiburg.de> writes:
> math.factorial is accurate and faster than your pure-Python function,
especially for large numbers.
It is slower for huge numbers than decimal if you use this
Python function:
http://www.bytereef.org/mpdecimal/quickstart.html#factorial-in-pure-python
Be sure to set MAX_EMAX and MIN_EMIN, that's missing in the example.
If you want to *see* all digits of a very large number, then decimal is
probably even faster than gmpy. See:
http://www.bytereef.org/mpdecimal/benchmarks.html#arbitrary-precision-libraries
Stefan Krah
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