Content-type: text/html Man page of inet_network

inet_network

Section: C Library Functions (3)
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NAME

inet_network - Translates an Internet dot-formatted address string to a network address integer  

LIBRARY

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

SYNOPSIS

#include <arpa/inet.h>

in_addr_t inet_network(

       const char *string );
 

STANDARDS

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

inet_network(): XPG4-UNIX

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

PARAMETERS

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

DESCRIPTION

The inet_network() function translates a dot-formatted Internet network character address string to a network byte-ordered address (most significant byte leftmost, least significant byte rightmost).

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 interpreted 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.  

RETURN VALUES

Upon successful completion, the inet_network() function returns an Internet byte-ordered address. Otherwise, it returns (in_addr_t)-1.  

ERRORS

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

RELATED INFORMATION

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

Standards: standards(5)

Network Programmer's Guide delim off


 

Index

NAME
LIBRARY
SYNOPSIS
STANDARDS
PARAMETERS
DESCRIPTION
RETURN VALUES
ERRORS
RELATED INFORMATION

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Time: 02:42:32 GMT, October 02, 2010