Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

 ◄Summary► ◄Example►                         ◄Up► ◄Contents► ◄Index► ◄Back►
────────────────────────────────────────────────────────────────────────────
 
     The j0, j1, and jn routines return Bessel functions of the first
     kind: orders 0, 1, and n, respectively.
 
     The y0, y1, and yn routines return Bessel functions of the second
     kind: orders 0, 1, and n, respectively. The argument <x> must be
     positive.
 
     The long double functions use an 80-bit long double form of
     arguments and return values. In all other respects, they are
     identical to the regular functions.
 
     Return Value
 
     These functions return the result of a Bessel function of <x>.
 
     The y0, y1, and yn routines, if <x> is negative, set errno to
     EDOM, print a DOMAIN error message to stderr, and return
     -HUGE_VAL.
 
     Error handling can be modified by using the matherr (or _matherrl)
     routine.
                                    -♦-