"""
Copyright 2013 Steven Diamond

This file is part of CVXPY.

CVXPY is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

CVXPY 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with CVXPY.  If not, see <http://www.gnu.org/licenses/>.
"""

from collections import namedtuple

# Constraints with linear expressions.
# constr_id is used to recover dual variables.
# expr == 0
LinEqConstr = namedtuple("LinEqConstr", ["expr",
                                         "constr_id",
                                         "size"])
# expr <= 0
LinLeqConstr = namedtuple("LinLeqConstr", ["expr",
                                           "constr_id",
                                           "size"])
