function r = max(varargin)% POSYNOMIAL/MAX implements max function for posynomial objects.% sz = size(varargin{1});if( length(varargin) == 1 )  % have a single input or an array input or a matrix input  if( max(sz) == 1 )    % single input, return it back    r = varargin{1};  elseif( sz(1) == 1 || sz(2) == 1 )    % have an array (a row or a column vector), convert it to a cell    r = gposynomial('max',num2cell(varargin{1}));  else    % have a matrix (default is to max over columns)    mtx = varargin{1};    for k = 1:sz(2)      col = mtx(:,k);      r(1,k) = gposynomial('max',num2cell(col));    end  endelse  % have an input list  r = gposynomial('max',varargin);end