Add a useful package (from Source forge) for octave

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

diff --git a/octave_packages/control-2.3.52/@tfpoly/tfpoly.m b/octave_packages/control-2.3.52/@tfpoly/tfpoly.m
new file mode 100644 (file)
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+++ b/octave_packages/control-2.3.52/@tfpoly/tfpoly.m
@@ -0,0 +1,51 @@
+## Copyright (C) 2009, 2010   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 -*-
+## Class constructor.  For internal use only.
+
+## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
+## Created: September 2009
+## Version: 0.2
+
+function p = tfpoly (a)
+
+  superiorto ("double");
+
+  switch (nargin)
+    case 0
+      p = struct ("poly", []);
+      p = class (p, "tfpoly");
+
+    case 1
+      if (isa (a, "tfpoly"))
+        p = a;
+        return;
+      elseif (is_real_vector (a))
+        p.poly = reshape (a, 1, []);
+        p = class (p, "tfpoly");
+        p = __remove_leading_zeros__ (p);
+      else
+        error ("tfpoly: argument must be a real vector");
+      endif
+
+    otherwise
+      print_usage ();
+
+  endswitch
+
+endfunction
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