Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / control-2.3.52 / @tf / __ctranspose__.m

diff --git a/octave_packages/control-2.3.52/@tf/__ctranspose__.m b/octave_packages/control-2.3.52/@tf/__ctranspose__.m
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+++ b/octave_packages/control-2.3.52/@tf/__ctranspose__.m
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+## Copyright (C) 2012   Lukas F. Reichlin
+##
+## This file is part of LTI Syncope.
+##
+## LTI Syncope 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.
+##
+## LTI Syncope 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 LTI Syncope.  If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## Conjugate transpose of TF models.
+
+## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
+## Created: May 2012
+## Version: 0.1
+
+function sys = __ctranspose__ (sys, ct)
+
+  num = sys.num;
+  den = sys.den;
+  
+  if (ct)   # continuous-time
+    num = cellfun (@conj_ct, num, "uniformoutput", false);
+    den = cellfun (@conj_ct, den, "uniformoutput", false);
+  else      # discrete-time
+    num = cellfun (@conj_dt, num, "uniformoutput", false);
+    den = cellfun (@conj_dt, den, "uniformoutput", false);
+    ## TODO: shall I make "den" a monic polynomial?
+  endif
+
+  sys.num = num.';
+  sys.den = den.';
+
+endfunction
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