j0(3)
- NetBSD Manual Pages
J0(3) NetBSD Library Functions Manual J0(3)
NAME
j0, j0f, j1, j1f, jn, jnf, y0, y0f, y1, y1f, yn, ynf -- Bessel functions
of first and second kind
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
j0(double x);
float
j0f(float x);
double
j1(double x);
float
j1f(float x);
double
jn(int n, double x);
float
jnf(int n, float x);
double
y0(double x);
float
y0f(float x);
double
y1(double x);
float
y1f(float x);
double
yn(int n, double x);
float
ynf(int n, float x);
DESCRIPTION
The functions j0(), j0f(), j1() and j1f() compute the Bessel function of
the first kind of the order 0 and the order 1, respectively, for the real
value x; the functions jn() and jnf() compute the Bessel function of the
first kind of the integer order n for the real value x.
The functions y0(), y0f(), y1() and y1f() compute the linearly indepen-
dent Bessel function of the second kind of the order 0 and the order 1,
respectively, for the positive integer value x (expressed as a double);
the functions yn() and ynf() compute the Bessel function of the second
kind for the integer order n for the positive integer value x (expressed
as a double).
RETURN VALUES
If these functions are successful, the computed value is returned, other-
wise the global variable errno is set to EDOM and a reserve operand fault
is generated.
SEE ALSO
math(3)
HISTORY
This set of functions appeared in Version 7 AT&T UNIX.
NetBSD 6.1.1 April 19, 1991 NetBSD 6.1.1
Powered by man-cgi (2024-03-20).
Maintained for NetBSD
by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.