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Man Pages


Manual Reference Pages  -  IPX_NTOA (3)

NAME

ipx_addr, ipx_ntoa - IPX address conversion routines

CONTENTS

Library
Synopsis
Description
Return Values
See Also
History
Bugs

LIBRARY


.Lb libipx

SYNOPSIS


.In sys/types.h
.In netipx/ipx.h struct ipx_addr ipx_addr const char *cp char * ipx_ntoa struct ipx_addr ipx

DESCRIPTION

The routine ipx_addr interprets character strings representing IPX addresses, returning binary information suitable for use in system calls. The routine ipx_ntoa takes IPX addresses and returns ASCII strings representing the address in a notation in common use:
<network number>.<host number>.<port number>

Trailing zero fields are suppressed, and each number is printed in hexadecimal, in a format suitable for input to ipx_addr. Any fields lacking super-decimal digits will have a trailing H’ appended.

An effort has been made to ensure that ipx_addr be compatible with most formats in common use. It will first separate an address into 1 to 3 fields using a single delimiter chosen from period .’, colon :’ or pound-sign #’. Each field is then examined for byte separators (colon or period). If there are byte separators, each subfield separated is taken to be a small hexadecimal number, and the entirety is taken as a network-byte-ordered quantity to be zero extended in the high-network-order bytes. Next, the field is inspected for hyphens, in which case the field is assumed to be a number in decimal notation with hyphens separating the millennia. Next, the field is assumed to be a number: It is interpreted as hexadecimal if there is a leading 0x’ (as in C), a trailing H’ (as in Mesa), or there are any super-decimal digits present. It is interpreted as octal if there is a leading 0’ and there are no super-octal digits. Otherwise, it is converted as a decimal number.

RETURN VALUES

None. (See BUGS.)

SEE ALSO

hosts(5), networks(5)

HISTORY

The precursor ns_addr and ns_toa functions appeared in BSD 4.3 .

BUGS

The string returned by ipx_ntoa resides in a static memory area. The function ipx_addr should diagnose improperly formed input, and there should be an unambiguous way to recognize this.
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