sinc.m
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上传日期:2013-03-02
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- function y=sinc(x)
- %SINC Sin(pi*x)/(pi*x) function.
- % SINC(X) returns a matrix whose elements are the sinc of the elements
- % of X, i.e.
- % y = sin(pi*x)/(pi*x) if x ~= 0
- % = 1 if x == 0
- % where x is an element of the input matrix and y is the resultant
- % output element.
- %
- % See also SQUARE, SIN, COS, CHIRP, DIRIC, GAUSPULS, PULSTRAN, RECTPULS,
- % and TRIPULS.
- % Author(s): T. Krauss, 1-14-93
- % Copyright 1988-2001 The MathWorks, Inc.
- % $Revision: 1.6 $ $Date: 2001/04/02 20:20:54 $
- y=ones(size(x));
- i=find(x);
- y(i)=sin(pi*x(i))./(pi*x(i));