Python C extension to compute the permanent.

Pete Shadbolt 83fb94823e Merge branch 'master' of github.com:peteshadbolt/permanent		vor 9 Jahren
permanent	Compatible with PyPI, can be installed through pip	vor 11 Jahren
src	Add tests, guard against dtype!=complex	vor 9 Jahren
tests	Add tests, guard against dtype!=complex	vor 9 Jahren
.gitignore	README	vor 9 Jahren
LICENSE	Compatible with PyPI, can be installed through pip	vor 11 Jahren
MANIFEST	Compatible with PyPI, can be installed through pip	vor 11 Jahren
MANIFEST.in	Compatible with PyPI, can be installed through pip	vor 11 Jahren
README.md	Merge branch 'master' of github.com:peteshadbolt/permanent	vor 9 Jahren
setup.py	Include numpy headers	vor 11 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.