Add a useful package (from Source forge) for octave

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

diff --git a/octave_packages/linear-algebra-2.2.0/@blksparse/ctranspose.m b/octave_packages/linear-algebra-2.2.0/@blksparse/ctranspose.m
new file mode 100644 (file)
index 0000000..1ba6ab5
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+++ b/octave_packages/linear-algebra-2.2.0/@blksparse/ctranspose.m
@@ -0,0 +1,28 @@
+## 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} ctranspose (@var{x})
+## Returns the conjugate transpose of a block sparse matrix @var{x}.
+## @end deftypefn
+
+function y = ctranspose (x)
+  y.siz = x.siz(2:-1:1);
+  y.bsiz = x.bsiz(2:-1:1);
+  [y.j,idx] = sort (x.i);
+  y.i = x.j(idx);
+  y.sv = conj (permute (x.sv(:,:,idx), [2,1,3]));
+endfunction