2.11BSD#431 - /usr/man/cat3/htons.0

BYTEORDER(3N)	    UNIX Programmer's Manual	    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 net-
     work 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 getservent(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.


Printed 11/26/99	  May 15, 1986				1