www.gusucode.com > matlab 案例源码 matlab代码程序 > matlab/FindSignFunctionExample.m
%% Find Sign Function % Find the sign function of a number. % Copyright 2015 The MathWorks, Inc. sign(2) %% % Find the sign function of the values of a vector. V = [-11 0 1.5 Inf NaN]; sign(V) %% % Find the sign function of the values of a matrix. M = magic(3) - 5; sign(M) %% % Find the sign function of a complex number. z = 4 - 3*i; sign(z)