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mpower.m
Package: wavelet_toolbox.rar [view]
Upload User: haiyisale
Upload Date: 2013-01-09
Package Size: 3246k
Code Size: 1k
Category:
Wavelet
Development Platform:
Matlab
- function Q = mpower(P,pow)
- %MPOWER Laurent polynomial exponentiation.
- % MPOWER(P,POW) overloads Laurent polynomial P^POW.
- % For a positive integer POW, Q = mpower(P,POW)
- % returns the Laurent polynomial Q = P^POW.
- % For a negative integer POW and for a monomial P
- % Q = mpower(P,POW) returns the monomial Q = P^POW.
- % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 19-Jun-2003.
- % Last Revision: 19-Jun-2003.
- % Copyright 1995-2004 The MathWorks, Inc.
- % $Revision: 1.1.6.2 $ $Date: 2004/04/13 00:38:56 $
- if pow~=fix(pow)
- error('Invalid value for power argument.')
- end
- Q = 1;
- if pow>0
- for k = 1:pow , Q = Q*P; end
- elseif pow<0
- if ismonomial(P)
- D = 1/P;
- for k = 1:abs(pow) , Q = Q*D; end
- else
- error('For negative powers, P must be a monomial.')
- end
- else
- end