function engine = set_params(engine, varargin)% SET_PARAMS Set the parameters (fields) for a belprop_inf_engine object% engine = set_params(engine, name/value pairs)%% The following optional arguments can be specified in the form of name/value pairs:% e.g., engine = set_params(engine, 'tol', 1e-2, 'max_iter', 10)%% max_iter - max. num. loopy iterations % momentum - weight assigned to old message in convex combination % tol - tolerance used to assess convergence % maximize - 1 means use max-product, 0 means use sum-productargs = varargin{1};nargs = length(args);for i=1:2:nargs  switch args{i},   case 'max_iter', engine.max_iter = args{i+1};   case 'momentum', engine.momentum = args{i+1};   case 'tol',      engine.tol = args{i+1};   case 'maximize', engine.maximize = args{i+1};   otherwise,    error(['invalid argument name ' args{i}]);  endend