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 IBM RT PC, these routines are defined as null macros in the include file <netinet/in.h>.

These routines are most often used with Internet addresses and ports as returned by gethostent(3N) and getservent(3N).

SEE ALSO

gethostent(3N), getservent(3N)

PRPQs 5799-WZQ/5799-PFF: IBM/4.3  —  30 Sep 1985