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j0, j0f, j0l, j1, j1f, j1l, jn, jnf, jnl - Bessel functions of the first kind

c99 [ flag... ] file... -lm [ library... ]
#include <math.h>

double j0(double x);

float j0f(float x);

long double j0l(long double x);

double j1(double x);

float j1f(float x);

long double j1l(long double x);

double jn(int n, double x);

float jnf(int n, float x);

long double jnl(int n, long double x);

These functions compute Bessel functions of x of the first kind of orders 0, 1 and n respectively.

Upon successful completion, these functions return the relevant Bessel value of x of the first kind.

If x is NaN, a NaN is returned.

No errors are defined.

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

Interface Stability See below.

MT-Level MT-Safe

The j0(), j1(), and jn() functions are Standard. The j0f(), j0l(), j1f(), j1l(), jnf(), and jnl() functions are Stable.

isnan(3M), y0(3M), math.h(3HEAD), attributes(5), standards(5)