X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fnnet-0.1.13%2Fdsatlin.m;fp=octave_packages%2Fnnet-0.1.13%2Fdsatlin.m;h=c4ffeb41db9c414071b42ea953b27e6af7bd9823;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/nnet-0.1.13/dsatlin.m b/octave_packages/nnet-0.1.13/dsatlin.m
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+## Copyright (C) 2007 Michel D. Schmid <michaelschmid@users.sourceforge.net>
+##
+##
+## 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 2, 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 this program; see the file COPYING.  If not, write to the Free
+## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+## 02110-1301, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {}[@var{a} = dsatlin (@var{n})
+##
+## @end deftypefn
+
+## @seealso{dpurelin,dtansig,dlogsig}
+
+## Author: Michel D. Schmid
+
+
+function a = dsatlin(n)
+
+
+  # the derivative of satlin is easy:
+  # where satlin is constant, the derivative is 0
+  # else, because without variable n, the derivative is 1
+  if (n>=0 && n<=1)
+    a = 1;
+  else
+    a = 0;
+  endif
+
+endfunction
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