init

FOTF Toolbox/@fotf/iszero.m

@@ -0,0 +1,14 @@
+function key=iszero(g)
+% iszero - check whether a SISO FOTF object is zero or not
+%
+%   key=iszero(G)
+% 
+%   G - a SISO FOTF object
+%   key - identifier, if G is zero, then key = 1.
+
+% Copyright (c) Dingyu Xue, Northeastern University, China
+% Last modified 28 March, 2017 
+% Last modified 18 May, 2022 
+   key=0; [~,~,b,nb]=fotfdata(g);
+   if isempty(b) || (length(nb)==1 && abs(b(1))<eps), key=1; end
+end