function ans = issparse(S);
%ISSPARSE True if matrix is sparse.
%	ISSPARSE(S) is 1 if the storage class of S is sparse
%	and 0 otherwise.

%	Copyright (c) 1984-93 by The MathWorks, Inc.

ans = 0;
if ~isempty(S), ans = sparsfun('issparse',S); end
