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ns(3n) [bsd man page]

NS(3N)																	    NS(3N)

NAME
ns_addr, ns_ntoa - Xerox NS(tm) address conversion routines SYNOPSIS
#include <sys/types.h> #include <netns/ns.h> struct ns_addr ns_addr(cp) char *cp; char *ns_ntoa(ns) struct ns_addr ns; DESCRIPTION
The routine ns_addr interprets character strings representing XNS addresses, returning binary information suitable for use in system calls. ns_ntoa takes XNS addresses and returns ASCII strings representing the address in a notation in common use in the Xerox Development Envi- ronment: <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 ns_addr. Any fields lacking super-decimal digits will have a trailing ``H'' appended. Unfortunately, no universal standard exists for representing XNS addresses. An effort has been made to insure that ns_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 millenia. 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 is there is a leading ``0'' and there are no super-octal digits. Otherwise, it is converted as a decimal number. SEE ALSO
hosts(5), networks(5), DIAGNOSTICS
None (see BUGS). BUGS
The string returned by ns_ntoa resides in a static memory area. ns_addr should diagnose improperly formed input, and there should be an unambiguous way to recognize this. 4.3 Berkeley Distribution May 12, 1986 NS(3N)

Check Out this Related Man Page

IPX(3)							   BSD Library Functions Manual 						    IPX(3)

NAME
ipx_addr, ipx_ntoa -- IPX address conversion routines LIBRARY
IPX Address Conversion Support Library (libipx, -lipx) SYNOPSIS
#include <sys/types.h> #include <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 4.3BSD. 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. BSD
June 4, 1993 BSD

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