%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 imaginary part).
%
%   See also REAL, IMAG, I, J.

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 5.10 $  $Date: 2000/06/01 00:40:17 $
%   Built-in function.
