byteorder, htonl, htons, ntohl, ntohs - convert values between host and
network byte order
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;
These routines convert 16 and 32 bit quantities between network byte
order and host byte order. On Sun-2, Sun-3 and Sun-4 systems, these
routines are defined as NULL macros in the include file <<netinet/in.h>>.
On Sun386i systems, these routines are functional since its host byte
order is different from network byte order.
These routines are most often used in conjunction with Internet
addresses and ports as returned by gethostent(3N) and getservent(3N).
18 February 1988 BYTEORDER(3N)