inet_netof()--Separate Network Portion of IP Address

BSD 4.3 Syntax

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

 int inet_netof(struct in_addr internet_address)

  Service Program Name: QSOSRV2

  Default Public Authority: *USE

  Threadsafe: Yes

UNIX^® 98 Compatible Syntax

  #define _XOPEN_SOURCE 520
  #include <arpa/inet.h>

 in_addr_t inet_netof(struct in_addr internet_address)

  Service Program Name: QSOSRV2

  Default Public Authority: *USE

  Threadsafe: Yes

The inet_netof() function is used to extract the network portion of an IP address.

There are two versions of the API, as shown above. The base IBM^® i API uses BSD 4.3 structures and syntax. The other uses syntax and structures compatible with the UNIX 98 programming interface specifications. You can select the UNIX 98 compatible interface with the _XOPEN_SOURCE macro.

Parameters

internet_address: (Input) The 32-bit IP address from which the network portion of the address is to be extracted.

Authorities

No authorization is required.

Return Value

inet_netof() returns an integer. Possible values are:

n (where n is the network IP address)

Usage Notes

When you develop in C-based languages and an application is compiled with the _XOPEN_SOURCE macro defined to the value 520 or greater, the inet_netof() API is mapped to qso_inet_netof98().

Related Information

_XOPEN_SOURCE--Using _XOPEN_SOURCE for the UNIX 98 compatible interface
inet_lnaof()--Separate Local Portion of IP Address
inet_makeaddr()--Combine Network Portion and Host Portion to Make IP Address

API introduced: V3R1

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