bessel(3m) bessel(3m)
Name
j0, j1, jn, y0, y1, yn - bessel functions
Syntax
#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)
double x;
Description
These functions calculate bessel functions of the first and second kinds for real arguments and integer orders.
Return Values
Negative arguments cause and to return NaN. Arguments too large in magnitude cause and to return NaN.
Arguments too large in magnitude cause and to return zero.
Environment
When your program is compiled using the System V environment, nonpositive arguments cause and to return the value HUGE and to set errno to
EDOM. In addition, a message indicating DOMAIN error is printed on the standard error output.
Arguments too large in magnitude cause and to return zero and to set errno to ERANGE. In addition, a message indicating TLOSS error is
printed on the standard error output.
These error-handling procedures may be changed with the function.
See Also
math(3m)
RISC bessel(3m)
