www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@multistage/thisisstable.m
function f = isstable(Hd) %ISSTABLE True if filter is stable. % ISSTABLE(Hd) returns 1 if discrete-time filter Hd is stable, and 0 % otherwise. % % See also DFILT. % Author: Thomas A. Bryan, J. Schickler % Copyright 1988-2004 The MathWorks, Inc. % This should be private f = all(isstable(Hd.Stage));