/usr/lib/python2.7/dist-packages/ufl/restriction.py is in python-ufl 1.4.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | """Restriction operations."""
# Copyright (C) 2008-2014 Martin Sandve Alnes
#
# This file is part of UFL.
#
# UFL is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# UFL is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with UFL. If not, see <http://www.gnu.org/licenses/>.
#
# First added: 2008-06-08
# Last changed: 2011-06-02
from ufl.log import error
from ufl.operatorbase import Operator
from ufl.precedence import parstr
from ufl.common import EmptyDict
#--- Restriction operators ---
class Restricted(Operator):
__slots__ = ("_f", "_side")
# TODO: Add __new__ operator here, e.g. restricted(literal) == literal
def __init__(self, f, side):
Operator.__init__(self)
self._f = f
self._side = side
def shape(self):
return self._f.shape()
def operands(self):
return (self._f,)
def free_indices(self):
return self._f.free_indices()
def index_dimensions(self):
return self._f.index_dimensions()
def evaluate(self, x, mapping, component, index_values):
return self._f.evaluate(x, mapping, component, index_values)
def __str__(self):
return "%s('%s')" % (parstr(self._f, self), self._side)
class PositiveRestricted(Restricted):
__slots__ = ()
def __init__(self, f):
Restricted.__init__(self, f, "+")
def __repr__(self):
return "PositiveRestricted(%r)" % self._f
class NegativeRestricted(Restricted):
__slots__ = ()
def __init__(self, f):
Restricted.__init__(self, f, "-")
def __repr__(self):
return "NegativeRestricted(%r)" % self._f
# TODO: Place in a better file?
class CellAvg(Operator):
__slots__ = ("_f",)
# TODO: Add __new__ operator here, e.g. cell_avg(literal) == literal
def __init__(self, f):
Operator.__init__(self)
self._f = f
def shape(self):
return self._f.shape()
def operands(self):
return (self._f,)
def free_indices(self):
return ()
def index_dimensions(self):
return EmptyDict
def evaluate(self, x, mapping, component, index_values):
"Performs an approximate symbolic evaluation, since we dont have a cell."
return self._f.evaluate(x, mapping, component, index_values)
def __str__(self):
return "cell_avg(%s)" % (self._f,)
def __repr__(self):
return "CellAvg(%r)" % self._f
# TODO: Place in a better file?
class FacetAvg(Operator):
__slots__ = ("_f",)
# TODO: Add __new__ operator here, e.g. facet_avg(literal) == literal
def __init__(self, f):
Operator.__init__(self)
self._f = f
def shape(self):
return self._f.shape()
def operands(self):
return (self._f,)
def free_indices(self):
return ()
def index_dimensions(self):
return EmptyDict
def evaluate(self, x, mapping, component, index_values):
"Performs an approximate symbolic evaluation, since we dont have a cell."
return self._f.evaluate(x, mapping, component, index_values)
def __str__(self):
return "facet_avg(%s)" % (self._f,)
def __repr__(self):
return "FacetAvg(%r)" % self._f
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