function S = sparsfun(keyword,S)
%SPARSFUN Sparse auxiliary functions and parameters.
%	Several MATLAB functions, defined in M-files, use this built-in
%	function with a text keyword as the first argument to access the
%	internal sparse data structure.
%	eg. nnz = sparsfun('nnz',S) and p = sparsfun('colmmd',S).

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