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- function y = polyvalm(c,x)
- %POLYVALM Matrix polynomial evaluation.
- % If V is a vector whose elements are the coefficients of a
- % polynomial, then POLYVALM(V,X) is the value of the
- % polynomial evaluated with matrix argument X. See POLYVAL
- % for polynomial evaluation in the regular or array sense.
-
-
- % J.N.Little 4-20-86
- % Copyright (c) 1984-93 by The MathWorks, Inc.
-
- % Polynomial evaluation c(x) using Horner's method
-
- nc = max(size(c));
- [m,n] = size(x);
- if m ~= n
- error('Matrix must be square.')
- end
-
- y = zeros(m);
- for i=1:nc
- y = x * y + c(i) * eye(m);
- end
-