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jnf(3) [netbsd man page]

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

Check Out this Related Man Page

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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