SINC Function
Computes the sine of the input divided by the input.
Usage
result = SINC(x)
Input Parameters
x—The value at which sin(x)/x is evaluated.
Returned Value
result—The sine of the input divided by the input.
Keywords
None.
Discussion
SINC computes sin(x)/x for all 
. Specifically:
where e = (machine precision)1/2.
The SINC function is used in the sampling theorem in the frequency domain of the Fourier integral.
Example
In this example SINC is computed for x = 0, 1, and p.
x = [0.0, 1.0, !Pi]
PM, SINC(x)
; 1.0000000
; 0.84147098
; -2.7827534e-08
