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1 perry 1 J0
2 !!!J0
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 CONFORMING TO
7 BUGS
8 ----
9 !!NAME
10
11
12 j0, j1, jn, y0, y1, yn - Bessel functions
13 !!SYNOPSIS
14
15
16 __#include
17 __ ''x''__);
18 double j1(double__ ''x''__);
19 double jn(int__ ''n''__, double__ ''x''__);
20 double y0(double__ ''x''__);
21 double y1(double__ ''x''__);
22 double yn(int__ ''n''__, double__ ''x''__);
23 __
24 !!DESCRIPTION
25
26
27 The __j0()__ and __j1()__ functions return Bessel
28 functions of ''x'' of the first kind of orders 0 and 1,
29 respectively. The __jn()__ function returns the Bessel
30 function of ''x'' of the first kind of order
31 ''n''.
32
33
34 The __y0()__ and __y1()__ functions return Bessel
35 functions of ''x'' of the second kind of orders 0 and 1,
36 respectively. The __yn()__ function returns the Bessel
37 function of ''x'' of the second kind of order
38 ''n''.
39
40
41 For the functions __y0()__, __y1()__ and __yn()__,
42 the value of ''x'' must be positive. For negative values
43 of ''x'', these functions return -HUGE_VAL.
44 !!CONFORMING TO
45
46
47 SVID 3, BSD 4.3
48 !!BUGS
49
50
51 There are errors of up to 2e-16 in the values returned by
52 __j0()__, __j1()__ and __jn()__ for values of
53 ''x'' between -8 and 8.
54 ----
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