www.gusucode.com > elfun工具箱matlab源码程序 > elfun/realsqrt.m
%REALSQRT Real square root. % REALSQRT(X) is the square root of the elements of X. An % error is produced if X is negative. % % See also SQRT, SQRTM, REALLOG, REALPOW. % Copyright 1984-2006 The MathWorks, Inc.