gusucode.com > symbolic工具箱matlab源码程序 > symbolic/@sym/kroneckerDelta.m
function Z = kroneckerDelta(M,N) %KRONECKERDELTA The Kronecker delta symbol % % KRONECKERDELTA(M, N) is 1 if M==N, 0 otherwise. % If M or N are NaN, KRONECKERDELTA(M,N) returns NaN. % % For non-constant entries in M and N, a symbolic kroneckerDelta call % is returned. % % If M or N are non-scalar, KRONECKERDELTA is applied element-by-element. % % KRONECKERDELTA(M) == KRONECKERDELTA(M, 0) % % kroneckerDelta(1,sym(0)) returns 0 % kroneckerDelta(1:4, sym('n')) returns % [kroneckerDelta(n - 1, 0), kroneckerDelta(n - 2, 0), ... % kroneckerDelta(n - 3, 0), kroneckerDelta(n - 4, 0)] % Copyright 2014 The MathWorks, Inc. if nargin==1 N = sym(0); end Z = privBinaryOp(M, N, 'symobj::vectorizeSpecfunc', 'kroneckerDelta', '0'); end