gusucode.com > symbolic工具箱matlab源码程序 > symbolic/@char/isAlways.m
function Y = isAlways(X,varargin) %isAlways Test mathematical statement % % isAlways(X) for a logical array X returns X. % This function exists to allow a uniform calling syntax for SYM and LOGICAL objects. % Copyright 2013 The MathWorks, Inc. % Note: @char/isAlways.m exists only to support isAlways(true,'Unknown','error') etc. if ~islogical(X) error(message('MATLAB:categorical:UndefinedFunction', 'isAlways', class(X))); end Y = X;