function z = prob_multiple_DP_series_x2z_separate_test(varargin)
%PROB_MULTIPLE_DP_SERIES_X2Z_SEPARATE_TEST  One line description goes here.
%
%   More detailed description goes here.
%
%   Syntax:
%   varargout = prob_multiple_DP_series_x2z_separate_test(varargin)
%
%   Input: For <keyword,value> pairs call prob_multiple_DP_series_x2z_separate_test() without arguments.
%   varargin  =
%
%   Output:
%   varargout =
%
%   Example
%   prob_multiple_DP_series_x2z_separate_test
%
%   See also

%% Copyright notice
%   --------------------------------------------------------------------
%   Copyright (C) 2012 Deltares
%       Joost den Bieman
%
%       joost.denbieman@deltares.nl
%
%       P.O. Box 177
%       2600 MH Delft
%       The Netherlands
%
%   This library 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 library 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 library.  If not, see <http://www.gnu.org/licenses/>.
%   --------------------------------------------------------------------

% This tool is part of <a href="http://www.OpenEarth.eu">OpenEarthTools</a>.
% OpenEarthTools is an online collaboration to share and manage data and
% programming tools in an open source, version controlled environment.
% Sign up to recieve regular updates of this function, and to contribute
% your own tools.

%% Version <http://svnbook.red-bean.com/en/1.5/svn.advanced.props.special.keywords.html>
% Created: 17 Oct 2012
% Created with Matlab version: 7.14.0.739 (R2012a)

% $Id$
% $Date$
% $Author$
% $Revision$
% $HeadURL$
% $Keywords: $

%% settings

OPT = struct(...
    'U1', [],...
    'U2', []);

OPT = setproperty(OPT, varargin{:});

%% limit state function

z1  = 0.1*(OPT.U1-OPT.U2).^2-(OPT.U1+OPT.U2)/sqrt(2)+3;
z2  = 0.1*(OPT.U1-OPT.U2).^2+(OPT.U1+OPT.U2)/sqrt(2)+3;
z3  = OPT.U1-OPT.U2+3*sqrt(2);
z4  = OPT.U2-OPT.U1+3*sqrt(2);

z   = [z1 z2 z3 z4];