inet_netof() — Get the network number from the Internet host sddress

X/Open:

#define _XOPEN_SOURCE_EXTENDED 1
#include <arpa/inet.h>

in_addr_t inet_netof(struct in_addr in);

Berkeley sockets:

#define _OE_SOCKETS
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

unsigned long inet_netof(struct addr_in in);

The inet_netof() function breaks apart the Internet host address and returns the network number portion.

Parameter

Description

in

The Internet address in network byte order.