NAME

j0, j1, jn, y0, y1, yn − bessel functions

SYNOPSIS

#include <math.h>

double j0 (x)
double x;

double j1 (x)
double x;

double jn (n, x);
double x;

double y0 (x)
double x;

double y1 (x)
double x;

double yn (n, x)
int n;
double x;

DESCRIPTION

These functions calculate Bessel functions of the first and second kinds for real arguments and integer orders. 

DIAGNOSTICS

Negative arguments cause y0, y1, and yn to return a huge negative value.