Python C extension to compute the permanent.

Pete Shadbolt 83fb94823e Merge branch 'master' of github.com:peteshadbolt/permanent		vor 7 Jahren
permanent	Compatible with PyPI, can be installed through pip	vor 9 Jahren
src	Add tests, guard against dtype!=complex	vor 7 Jahren
tests	Add tests, guard against dtype!=complex	vor 7 Jahren
.gitignore	README	vor 7 Jahren
LICENSE	Compatible with PyPI, can be installed through pip	vor 9 Jahren
MANIFEST	Compatible with PyPI, can be installed through pip	vor 9 Jahren
MANIFEST.in	Compatible with PyPI, can be installed through pip	vor 9 Jahren
README.md	Merge branch 'master' of github.com:peteshadbolt/permanent	vor 7 Jahren
setup.py	Include numpy headers	vor 9 Jahren

permanent

Implements Ryser's algorithm for the permanent.

Install:

$ pip install permanent

Use:

>>> from numpy import *
>>> from permanent import permanent
>>> permanent(eye(15, dtype=complex)
(1-0j)

Please note that for now we assume that the input array's dtype is complex. So for example:

>>> permanent(array([[0,1],[1,1]]), dtype=complex)
(1+0j)

whereas permanent(array([[0,1],[1,1]])) will not produce the expected result.