## 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} =} randintrlv (@var{data}, @var{state})
## Interleaves elements of @var{data} with a random permutation.
## @seealso{intrlv,deintrlv}
## @end deftypefn

function intrlvd = randintrlv(data,state)
	if(nargin < 2 || nargin >2)
		error('usage : interlvd = randinterlv(data,elements)');
	end
	
	if(isvector(data))
		l = length(data);
	else
		l = size(data,1);
	end
	rand('state',state);
	intrlvd = intrlv(data,randperm(l));