J0(3M)              UNIX Programmer's Manual               J0(3M)

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

SYNOPSIS
     #include <math.h>

     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 _y_0, _y_1, and _y_n to return a huge
     negative value and set _e_r_r_n_o to EDOM.

Printed 9/10/82                                                 1