www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@basefilter/isallpass.m
function f = isallpass(Hb, varargin) %ISALLPASS True for allpass filter. % ISALLPASS(Hb) returns 1 if filter Hb is all-pass, and 0 otherwise. % % ISALLPASS(Hb,TOL) uses tolerance TOL to determine when two numbers are % close enough to be considered equal. % % See also DFILT. % Author: J. Schickler % Copyright 1988-2002 The MathWorks, Inc. narginchk(1,2); f = base_is(Hb, 'thisisallpass', varargin{:}); % [EOF]