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+// Splitting a polynomial B(z)
+// 10.3
+// Splits a polynomial B into good, nonminimum with 
+// positive real & with negative real parts.
+// All are returned in polynomial form.
+// Gain is returned in Kp and delay in k.  
+
+function [Kp,k,Bg,Bnmp,Bm] = imcsplit(B,polynomial)
+k = 0;
+Kp = 1;
+if(polynomial)
+  rts = roots(B);
+  Kp = sum(B)/sum(coeff(poly(rts,'z')));
+else
+  rts = B;
+end
+Bg = 1; Bnmp = 1; Bm = 1;
+for i = 1:length(rts),
+    rt = rts(i);
+    if rt == 0,
+       k = k+1;
+    elseif (abs(rt)<1 & real(rt)>=0)
+      Bg = convol(Bg,[1 -rt]);
+    elseif (abs(rt)>=1 & real(rt)>=0)
+      Bnmp = convol(Bnmp,[1 -rt]);
+    else
+      Bm = convol(Bm,[1 -rt]);
+    end
+end
+
+
+
+
+
+
+
+