MATLAB遗传代码的源码 具体如何使用？希望能受到指点

				function [ypred]=da_olt1(x,coefs,poly);
				%
				% Non-linear steady-state model
				%
				
				%
				% Ensure the coefficients are in a column
				%
				[D L]=size(coefs);
				if L > D
					coefs=coefs';
				end
				
				
				%
				% Calculate y
				%
				ypred=(x.^poly)*coefs;