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function S = sparse2 (i,j,s,m,n,nzmax) %#ok
%SPARSE2 replacement for SPARSE
%
% Example:
% S = sparse2 (i,j,s,m,n,nzmax)
%
% Identical to the MATLAB sparse function (just faster).
% An additional feature is added that is not part of the MATLAB sparse
% function, the Z matrix. With an extra output,
%
% [S Z] = sparse2 (i,j,s,m,n,nzmax)
%
% the matrix Z is a binary real matrix whose nonzero pattern contains the
% explicit zero entries that were dropped from S. Z only contains entries
% for the sparse2(i,j,s,...) usage. [S Z]=sparse2(X) where X is full always
% returns Z with nnz(Z) = 0, as does [S Z]=sparse2(m,n). More precisely,
% Z is the following matrix (where ... means the optional m, n, and nzmax
% parameters).
%
% S = sparse (i,j,s, ...)
% Z = spones (sparse (i,j,1, ...)) - spones (S)
%
% See also sparse.
% Copyright 2006-2007, Timothy A. Davis, http://www.suitesparse.com
error ('sparse2 mexFunction not found') ;
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