www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavelet/@laurpoly/degree.m
function d = degree(P) %DEGREE Degree for Laurent polynomial. % d = DEGREE(P) returns the degree of the Laurent polynomial P. % If: % P(Z) = C(1)*Z^(n) + C(2)*z^(n-1) + ... + C(L)*z^(n-L+1) % then: % d = n-(n-L+1) - n = L-1 % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 19-Mar-2001. % Last Revision 13-Jun-2003. % Copyright 1995-2004 The MathWorks, Inc. d = length(P.coefs)-1;