inet_addr(3)						     Library Functions Manual						      inet_addr(3)

NAME

       inet_addr - Translates an Internet network address string to an Internet address integer

LIBRARY

       Standard C Library (libc.so, libc.a)

SYNOPSIS

       #include <arpa/inet.h>

       in_addr_t inet_addr(	 const char *string) ;

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       inet_addr():  XNS4.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Defines	an  Internet dot-formatted address character string of the form a.b.c.d, where a, b, c, and d  may be expressed as decimal, octal,
       or hexadecimal integers in the C idiom.

DESCRIPTION

       The inet_addr() function translates a dot-formatted Internet character address string to an Internet address integer. The Internet  address
       integer is returned as a network byte-ordered integer.

       Values specified using dot notation take on one of the following forms: When all 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.  When three parts are specified, the last part	is  inter-
       preted as a 16-bit quantity and placed in the rightmost two bytes of the network address.  This format is convenient for specifying Class B
       network addresses as 128.net.host.  When two parts are specified, the last part is interpreted as a  24-bit  quantity  and  placed  in  the
       rightmost  three  bytes of the network address.	This format is convenient for specifying Class A network addresses as net.host.  When only
       one part is specified, the value is stored directly in the network address without any byte rearrangement.

       All numbers supplied as parts in dot notation can be decimal, octal, or hexadecimal, as specified in the ISO C standard. A leading 0x or 0X
       implies hexadecimal and a leading 0 implies octal.  Otherwise, the number is interpreted as decimal.

NOTES

       The dot-formatted network-address a.b.c.d is returned as the machine integer dcba.

RETURN VALUES

       Upon  successful  completion,  the  inet_addr() function returns an equivalent network byte-ordered address integer.  Otherwise, it returns
       (in_addr_t)-1.

ERRORS

       Current industry standards for inet_addr() do not define error values.

RELATED INFORMATION

       Functions: inet_netof(3), inet_lnaof(3), inet_makeaddr(3), inet_network(3), inet_ntoa(3)

       Standards: standards(5)

       Network Programmer's Guide delim off

																      inet_addr(3)