%SAMEOBJECT    Object identity
% SAMEOBJECT(A,B) returns 1 if A and B are the same object.
% Specifically, whether their data pointers are the same.
%
% For example:
% a = 4;
% b = a;
% sameobject(a,b)   % returns 1
% sameobject(a,4)   % returns 0

% Written by Thomas P Minka