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NAME

       inet_aton, inet_addr, inet_ntoa -  Internet  address

       manipulation routines

SYNOPSIS

       #include <network.h>

       int inet_aton(const char *cp, struct in_addr *inp);

       unsigned long int inet_addr(const char *cp);

       char *inet_ntoa(struct in_addr in);

DESCRIPTION

       inet_aton() converts the Internet host address cp from the

       standard numbers-and-dots notation into  binary  data  and

       stores  it  in the structure that inp points to. inet_aton

       returns nonzero if the address is valid, zero if not.

       The  inet_addr()  function  converts  the  Internet   host

       address cp from numbers-and-dots notation into binary data

       in  network  byte  order.   If  the  input   is   invalid,

       INADDR_NONE (usually -1) is returned.  This is an obsolete

       interface to inet_aton, described immediately above; it is

       obsolete  because -1 is a valid address (255.255.255.255),

       and inet_aton provides a cleaner  way  to  indicate  error

       return.

       The   inet_ntoa()  function  converts  the  Internet  host

       address in given in network byte  order  to  a  string  in

       standard   numbers-and-dots   notation.    The  string  is

       returned in a statically allocated  buffer,  which  subse­

       quent calls will overwrite.