Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / communications-1.1.1 / randdeintrlv.m

diff --git a/octave_packages/communications-1.1.1/randdeintrlv.m b/octave_packages/communications-1.1.1/randdeintrlv.m
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+## Copyright (C) 2008 Sylvain Pelissier <sylvain.pelissier@gmail.com>
+##
+## 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
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{intrlvd} =} randdeintrlv (@var{data}, @var{state})
+## Restore elements of @var{data} with a random permutation.
+## @seealso{randintrlv,intrlv,deintrlv}
+## @end deftypefn
+
+function deintrlvd = randdeintrlv(data,state)
+       if(nargin < 2 || nargin >2)
+               error('usage : deinterlvd = randdeinterlv(data,state)');
+       end
+       
+       if(isvector(data))
+               l = length(data);
+       else
+               l = size(data,1);
+       end
+       rand('state',state);
+       deintrlvd = deintrlv(data,randperm(l));