Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / control-2.3.52 / @tfpoly / conj_ct.m

diff --git a/octave_packages/control-2.3.52/@tfpoly/conj_ct.m b/octave_packages/control-2.3.52/@tfpoly/conj_ct.m
new file mode 100644 (file)
index 0000000..a60139f
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+++ b/octave_packages/control-2.3.52/@tfpoly/conj_ct.m
@@ -0,0 +1,30 @@
+## 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 of continuous-time polynomial.  Replace s by -s.
+## For internal use only.
+
+## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
+## Created: May 2012
+## Version: 0.1
+
+function p = conj_ct (p)
+
+  p.poly(2:2:end) = -p.poly(2:2:end);
+
+endfunction