%ISREAL True for real array.
%   ISREAL(X) returns 1 if all elements in X have zero
%   imaginary part and 0 otherwise.
%
%   ~ISREAL(X) detects complex arrays (i.e., arrays that have
%   a non-zero real part).
%
%   See also REAL, IMAG, I, J.

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.7 $  $Date: 1997/11/21 23:28:23 $
%   Built-in function.
