% Step 1 function L. LAURENT -- 28/04/2017 -- luc.laurent@lecnam.net
0001 %% Step 1 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 % optiGTest - set of testing functions A toolbox to easy manipulate functions. 0009 % Copyright (C) 2017 Luc LAURENT <luc.laurent@lecnam.net> 0010 % 0011 % This program is free software: you can redistribute it and/or modify 0012 % it under the terms of the GNU General Public License as published by 0013 % the Free Software Foundation, either version 3 of the License, or 0014 % (at your option) any later version. 0015 % 0016 % This program is distributed in the hope that it will be useful, 0017 % but WITHOUT ANY WARRANTY; without even the implied warranty of 0018 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0019 % GNU General Public License for more details. 0020 % 0021 % You should have received a copy of the GNU General Public License 0022 % along with this program. If not, see <http://www.gnu.org/licenses/>. 0023 0024 % 0025 %global minimum : f(xi)=0 pour (x1,x2,x3,x4)=(0,...,0) 0026 %Design space: -5<xi<5 0027 0028 0029 function [p,dp] = funStep1(xx) 0030 0031 0032 %evaluation and derivatives 0033 pa=floor(abs(xx)); 0034 % 0035 p=sum(pa,3); 0036 0037 if nargout==2 0038 %function for testinf integer 0039 fun=@(input) (imag(input) == 0) & (round(input) == input); 0040 isInt=fun(xx); 0041 % 0042 dp=zeros(size(xx)); 0043 dp(isInt)=1/eps; 0044 end 0045 end