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J0(3M)                                                                  J0(3M)



NAME
       j0, j1, jn, y0, y1, yn - bessel functions

SYNOPSIS
       #include <&lt;math.h>&gt;

       double j0(x)
       double x;

       double j1(x)
       double x;

       double jn(n, x)
       double x;

       double y0(x)
       double x;

       double y1(x)
       double x;

       double yn(n, x)
       double x;

DESCRIPTION
       These  functions  calculate  Bessel  functions  of the first and second
       kinds for real arguments and integer orders.

DIAGNOSTICS
       Negative arguments cause y0, y1, and yn to return a huge negative value
       and set errno to EDOM.



                                19 January 1983                         J0(3M)