gusucode.com > symbolic工具箱matlab源码程序 > symbolic/@single/rectangularPulse.m
function y = rectangularPulse(varargin) %RECTANGULARPULSE Rectangular pulse function. % Y = RECTANGULARPULSE(X) is the rectangular pulse % over the interval from -1/2 to 1/2. % % Y = RECTANGULARPULSE(A,B,X) is the rectangular pulse % over the interval from A to B. % % It is 1 if A < X < B. % It is 0 if X < A or X > B or A = B. % It is 1/2 if A < B and X = A or X = B. % % Example: % rectangularPulse(-1, 2, -3) returns 0 % rectangularPulse(-1, 2, 0.5) returns 1 % rectangularPulse(-1, 2, 2) returns 0.5 % rectangularPulse(-1, 2, 3) returns 0 % syms a x % rectangularPulse(a, a+2, a-1) returns 0 % rectangularPulse(a, a+2, a) returns 1/2 % rectangularPulse(a, a+2, a+1) returns 1 % rectangularPulse(a, a+2, a+2) returns 1/2 % rectangularPulse(a, a+2, a+3) returns 0 % rectangularPulse(a, a+2, x) returns rectangularPulse(a, a+2, x) % % See also TRIANGULARPULSE. % Copyright 2012 The MathWorks, Inc. narginchk(1,3); y = sym.useSymForNumeric(@rectangularPulse, varargin{:});