text: """
  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 noncvx_variable import NonCvxVariable
  
  class Integer(NonCvxVariable):
      """ An integer variable. """
      # All values set rounded to the nearest integer.
      def _round(self, matrix):
          for i,v in enumerate(matrix):
              matrix[i] = round(v)
          return matrix
  
      # Constrain all entries to be the value in the matrix.
      def _fix(self, matrix):
          return [self == matrix]
  