www.gusucode.com > elmat工具箱matlab源码程序 > elmat/private/mysign.m
function S = mysign(A) %MYSIGN True sign function with MYSIGN(0) = 1. % Called by various matrices in elmat/private. % % Nicholas J. Higham % Copyright 1984-2013 The MathWorks, Inc. S = sign(A); S(S==0) = 1;