function x = binary(x)
%BINARY Constrains variables to be binary (0/1)
%
% F = BINARY(x) is used to a posteriori constrain 
% variables to be binary, in contrast to BINVAR 
% that declares variables as binary a priori.
%
% NOTE
% The binary constraint is imposed on the involved
% decision variables, not on the actual SDPVAR object.
%
% INPUT
% x : SDPVAR object
%
% OUTPUT
% F : Constraint object
%
% EXAMPLE
% F = binary(x); % Add integrality
% F = binary(x*pi) % Equivalent to code above
%
% See also INTEGER, SET, SDPVAR, INTVAR, BINVAR

x.typeflag = 8;
x = lmi(x);