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

BYTEORDER(3N)                                                    BYTEORDER(3N)


NAME
       htonl,  htons,  ntohl,  ntohs - convert values between host and network
       byte order

SYNOPSIS
       #include <sys/types.h>
       #include <netinet/in.h>

       netlong = htonl(hostlong);
       u_long netlong, hostlong;

       netshort = htons(hostshort);
       u_short netshort, hostshort;

       hostlong = ntohl(netlong);
       u_long hostlong, netlong;

       hostshort = ntohs(netshort);
       u_short hostshort, netshort;

DESCRIPTION
       These routines convert 16 and 32 bit quantities  between  network  byte
       order  and host byte order.  On machines such as the SUN these routines
       are defined as null macros in the include file <netinet/in.h>.

       These routines  are  most  often  used  in  conjunction  with  Internet
       addresses  and  ports  as  returned  by  gethostbyname(3N)  and getser���
       vent(3N).

SEE ALSO
       gethostbyname(3N), getservent(3N)

BUGS
       The VAX handles bytes backwards from most everyone else in  the  world.
       This is not expected to be fixed in the near future.


4.2 Berkeley Distribution        May 15, 1986                    BYTEORDER(3N)