BYTEORDER(3N) — Series 300 and 800 Only

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 HP-UX systems network and host byte orders are identical, so 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 gethostent(3N) and getservent(3N). Use these routines to write portable programs.

DEPENDENCIES

Implemented on the Series 300 and 800 only.

AUTHOR

UCB (University of California at Berkeley)

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