funSchwefel23

PURPOSE ^

% Schwefel 23 function

SYNOPSIS ^

function [p,dp]=funSchwefel23(xx)

DESCRIPTION ^

% Schwefel 23 function
L. LAURENT -- 28/04/2017 -- luc.laurent@lecnam.net

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 %% Schwefel 23 function
0002 %L. LAURENT -- 28/04/2017 -- luc.laurent@lecnam.net
0003 
0004 % sources available here:
0005 % https://bitbucket.org/luclaurent/optigtest/
0006 % https://github.com/luclaurent/optigtest/
0007 %
0008 
0009 % optiGTest - set of testing functions    A toolbox to easy manipulate functions.
0010 % Copyright (C) 2017  Luc LAURENT <luc.laurent@lecnam.net>
0011 %
0012 % This program is free software: you can redistribute it and/or modify
0013 % it under the terms of the GNU General Public License as published by
0014 % the Free Software Foundation, either version 3 of the License, or
0015 % (at your option) any later version.
0016 %
0017 % This program is distributed in the hope that it will be useful,
0018 % but WITHOUT ANY WARRANTY; without even the implied warranty of
0019 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0020 % GNU General Public License for more details.
0021 %
0022 % You should have received a copy of the GNU General Public License
0023 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
0024 
0025 %numerous local minima
0026 %1 global minimum : x=(0,0,...,0) >> f(x)=0
0027 %
0028 %Design space: -10<xi<10
0029 
0030 function [p,dp]=funSchwefel23(xx)
0031 
0032 %constants
0033 a=10;
0034 
0035 %evaluation and derivatives
0036 pa=xx.^a;
0037 %
0038 p=sum(pa,3);
0039 %
0040 if nargout==2
0041     %
0042     dp=a*xx.^(a-1);
0043 end
0044 
0045 end

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