J0(3) BSD 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 independent 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, otherwise 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.
BSD April 19, 1991 BSD
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J0(3) BSD 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 independent 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, otherwise 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.
BSD April 19, 1991 BSD
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