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.  The 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)

4.2 Berkeley Distribution  —  May 15, 1986