NAME

byteorder: htonl, htons, ntohl, ntohs − convert values between host and network byte order

SYNOPSIS

#include <sys/types.h>
#include <netinet/in.h>

u_long htonl(hostlong);
u_long hostlong;

u_short htons(hostshort);
u_short hostshort;

u_long ntohl(netlong);
u_long netlong;

u_short ntohs(netshort);
u_short netshort;

DESCRIPTION

These routines convert 16 and 32 bit quantities between network byte order and host byte order.  On machines such as the IRIS 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. 

Version 3.6  —  December 20, 1987