4.3BSD - /usr/man/cat3/dbesj0.0

BESSEL(3F)                                                          BESSEL(3F)


NAME
       bessel functions - of two kinds for integer orders

SYNOPSIS
       function besj0 (x)

       function besj1 (x)

       function besjn (n, x)

       function besy0 (x)

       function besy1 (x)

       function besyn (n, x)

       double precision function dbesj0 (x)
       double precision x

       double precision function dbesj1 (x)
       double precision x

       double precision function dbesjn (n, x)
       double precision x

       double precision function dbesy0 (x)
       double precision x

       double precision function dbesy1 (x)
       double precision x

       double precision function dbesyn (n, x)
       double precision x

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

DIAGNOSTICS
       Negative arguments cause besy0, besy1, and besyn to return a huge nega‐
       tive value. The system error code will be set to EDOM (33).

FILES
       /usr/lib/libF77.a

SEE ALSO
       j0(3M), perror(3F)


4.2 Berkeley Distribution        May 15, 1985                       BESSEL(3F)