Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / linear-algebra-2.2.0 / @blksparse / uplus.m

diff --git a/octave_packages/linear-algebra-2.2.0/@blksparse/uplus.m b/octave_packages/linear-algebra-2.2.0/@blksparse/uplus.m
new file mode 100644 (file)
index 0000000..93c78bf
--- /dev/null
+++ b/octave_packages/linear-algebra-2.2.0/@blksparse/uplus.m
@@ -0,0 +1,26 @@
+## Copyright (C) 2010 VZLU Prague
+## 
+## This program 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.
+## 
+## This program 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} uplus (@var{x})
+## Returns the unary plus of a block sparse matrix @var{x}.
+## Effectively the matrix itself, except signs of zeros.
+## @end deftypefn
+
+function y = uplus (x)
+  y = x;
+  y.sv = +x.sv;
+endfunction