update packages

[CreaPhase.git] / octave_packages / m / sparse / nonzeros.m

diff --git a/octave_packages/m/sparse/nonzeros.m b/octave_packages/m/sparse/nonzeros.m
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+++ b/octave_packages/m/sparse/nonzeros.m
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+## Copyright (C) 2004-2012 Paul Kienzle
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 3 of the License, or (at
+## your option) any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} nonzeros (@var{s})
+## Return a vector of the non-zero values of the sparse matrix @var{s}.
+## @end deftypefn
+
+function t = nonzeros (s)
+
+  if (nargin != 1)
+    print_usage ();
+  endif
+
+  [~, ~, t] = find (s);
+
+  t = t(:);
+
+endfunction
+
+
+%!assert(nonzeros([1,2;3,0]),[1;3;2])
+%!assert(nonzeros([1,2,3,0]),[1;2;3])
+%!assert(nonzeros(sparse([1,2;3,0])),[1;3;2])
+%!assert(nonzeros(sparse([1,2,3,0])),[1;2;3])