From: Vivien Maisonneuve Date: Tue, 19 Aug 2014 14:26:24 +0000 (+0200) Subject: Cleaner implementation of Domain.__and__() X-Git-Tag: 1.0~34 X-Git-Url: https://scm.cri.ensmp.fr/git/linpy.git/commitdiff_plain/d1592edb29b12dafe5c0d0698310b98b4915cf26?hp=a93fd1cb792ef6dafaeb2599823256241c061cd3 Cleaner implementation of Domain.__and__() --- diff --git a/linpy/domains.py b/linpy/domains.py index 7015252..da0ea97 100644 --- a/linpy/domains.py +++ b/linpy/domains.py @@ -320,17 +320,19 @@ class Domain(GeometricObject): Return the intersection of two or more domains as a new domain. As an alternative, function And() can be used. """ - if len(others) == 0: - return self - symbols = self._xsymbols((self,) + others) - islset1 = self._toislset(self.polyhedra, symbols) + result = self for other in others: - islset2 = other._toislset(other.polyhedra, symbols) - islset1 = libisl.isl_set_intersect(islset1, islset2) - return self._fromislset(islset1, symbols) + result &= other + return result def __and__(self, other): - return self.intersection(other) + if isinstance(other, Domain): + symbols = self._xsymbols([self, other]) + islset1 = self._toislset(self.polyhedra, symbols) + islset2 = other._toislset(other.polyhedra, symbols) + islset = libisl.isl_set_intersect(islset1, islset2) + return self._fromislset(islset, symbols) + return NotImplemented __and__.__doc__ = intersection.__doc__ def union(self, *others):