j0, j0f, j0l, j1, j1f, j1l, jn, jnf, jnl - Bessel functions of the first kind
#include <math.h>
double j0(double x);
double j1(double x);
double jn(int n, double x);
float j0f(float x);
float j1f(float x);
float jnf(int n, float x);
long double j0l(long double x);
long double j1l(long double x);
long double jnl(int n, long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
The j0() and j1() functions return
Bessel functions of x
of the first kind of orders 0 and 1,
respectively. The jn() function returns the Bessel
function of x
of the first kind of order n
.
The j0f(), j1f(), and
jnf(), functions are versions that take and return
float
values. The j0l(),
j1l(), and jnl() functions are
versions that take and return long double
values.
On success, these functions return the appropriate Bessel value of
the first kind for x
.
If x
is a NaN, a NaN is returned.
If x
is too large in magnitude, or the result underflows, a
range error occurs, and the return value is 0.
y0(3)