j0(), j0f(), j1(), j1f(), jn(), jnf() -- bessel functions of the first kind

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)

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.

PARAMETERS

x: Is the number whose Bessel function is to be derived.

RETURN VALUES

If successful, these functions return the Bessel value of x.

If x is NaN, NaN is returned.

If the absolute value of x is greater than X TLOSS then:

In IEEE mode, the correct answer is returned.

In POSIX mode, 0.0 is returned and errno is set to ERANGE.

In SVID or XOPEN mode, 0.0 is returned and the matherr() function is called.

CONFORMANCE

UNIX 98.

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

None.

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

j0(), j0f(), j1(), j1f(), jn(), jnf()
bessel functions of the first kind

Function