AT&T UNIX™PC Unix System V Users Manual - tenox

BESSEL (3M) BESSEL (3M)
NAME
jO, j 1, jn, yO, y1, yn - Bessel functions
SYNOPSIS
#include
double jO (x)
double x;
double jl (x)
double x;
double jn (n, x)
int n;
double x;
double yO (x)
double x;
double yl (x)
double x;
double yn (n, x)
int n;
double x;
DESCRIPTION
JO and jl return Bessel functions of x of the first kind of orders 0
and 1 respectively. Jn returns the Bessel function of x of the first
kind of order n .
� YO and yl return the Bessel functions of x of the second kind of
orders 0 and 1 respectively. Yn returns the Bessel function of x
of the second kind of order n. The value of x must be positive.
DIAGNOSTICS
Non-positive arguments cause yO, yl and yn to return the value
HUGE and to set errno to EDOM. They also cause a message
indicating DOMAIN error to be printed on the standard error output;
the process will continue.
These error-handling procedures may be changed with the function
matherr(3M).
SEE ALSO
matherr(3M).
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