inet_ntoa man page on SunOS

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inet_addr(3XNET) X/Open Networking Services Library Functions inet_addr(3XNET)

NAME
       inet_addr,   inet_network,   inet_makeaddr,   inet_lnaof,   inet_netof,
       inet_ntoa - Internet address manipulation

SYNOPSIS
       cc [ flag ... ] file ... -lxnet [ library ... ]
       #include <arpa/inet.h>

       in_addr_t inet_addr(const char *cp);

       in_addr_t inet_lnaof(struct in_addr in);

       struct in_addr inet_makeaddr(in_addr_t net, in_addr_t lna);

       in_addr_t inet_netof(struct in_addr in);

       in_addr_t inet_network(const char *cp);

       char *inet_ntoa(struct in_addr in);

DESCRIPTION
       The inet_addr() function converts the string pointed to by cp,  in  the
       Internet standard dot notation, to an integer value suitable for use as
       an Internet address.

       The inet_lnaof() function takes an Internet host address	 specified  by
       in and extracts the local network address part, in host byte order.

       The  inet_makeaddr()  function takes the Internet network number speci‐
       fied by net and the local network address specified  by	lna,  both  in
       host byte order, and constructs an Internet address from them.

       The  inet_netof()  function takes an Internet host address specified by
       in and extracts the network number part, in host byte order.

       The inet_network() function converts the string pointed to  by  cp,  in
       the  Internet  standard	dot notation, to an integer value suitable for
       use as an Internet network number.

       The inet_ntoa() function converts the Internet host  address  specified
       by in to a string in the Internet standard dot notation.

       All  Internet  addresses	 are  returned in network order (bytes ordered
       from left to right).

       Values specified using dot notation take one of the following forms:

       a.b.c.d	       When four parts are specified, each is interpreted as a
		       byte  of	 data and assigned, from left to right, to the
		       four bytes of an Internet address.

       a.b.c	       When a three-part address is specified, the  last  part
		       is  interpreted	as a 16-bit quantity and placed in the
		       rightmost two bytes of the network address. This	 makes
		       the three-part address format convenient for specifying
		       Class B network addresses as 128.net.host.

       a.b	       When a two-part address is supplied, the last  part  is
		       interpreted  as	a  24-bit  quantity  and placed in the
		       rightmost three bytes  of  the  network	address.  This
		       makes the two-part address format convenient for speci‐
		       fying Class A network addresses as net.host.

       a	       When only one  part  is	given,	the  value  is	stored
		       directly	 in  the  network address without any byte re‐
		       arrangement.

       All numbers supplied as parts in dot notation may be decimal, octal, or
       hexadecimal, that is, a leading 0x or 0X implies hexadecimal, as speci‐
       fied in the ISO C standard; otherwise, a leading 0 implies octal;  oth‐
       erwise, the number is interpreted as decimal.

USAGE
       The  return  value  of inet_ntoa() may point to static data that may be
       overwritten by subsequent calls to inet_ntoa().

RETURN VALUES
       Upon successful completion, inet_addr() returns the  Internet  address.
       Otherwise, it returns (in_addr_t)(−1).

       Upon successful completion, inet_network() returns the converted Inter‐
       net network number. Otherwise, it returns (in_addr_t)(−1).

       The inet_makeaddr() function returns the constructed Internet address.

       The inet_lnaof() function returns the local network address part.

       The inet_netof() function returns the network number.

       The inet_ntoa() function returns a pointer to the  network  address  in
       Internet-standard dot notation.

ERRORS
       No errors are defined.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Standard			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │MT-Safe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       endhostent(3XNET), endnetent(3XNET), attributes(5), standards(5)

SunOS 5.10			  10 Jun 2002		      inet_addr(3XNET)
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