This is a fork of package permanent. First, the fork fixes pointer arithmetics in the C module of this package. Without this fix, compiling the module for Windows is impossible due to (defensive) compiler's errors. Second, the fork uses numpy >= 2.0.0, which introduces an incompatible to previous versions ways of handling complex numbers in the C interface.
A suggested fix has been proposed as pull request, and was recently accepted (to a bit too big extent). The main intention of this fork is to provide a multiarchitecture packaged distribution on PyPi and to support numpy 2.x.x.
The remaining part of the readme just repeats the original pacakge description.
Implements Ryser's algorithm for the permanent.
Install:
$ pip install permanentbisUse:
>>> from numpy import *
>>> from permanentbis import permanent
>>> permanent(eye(15, dtype=complex))
(1-0j)