iso_ntoa man page on BSDi

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ISO_ADDR(3)		    BSD Programmer's Manual		   ISO_ADDR(3)

NAME
     iso_addr, iso_ntoa - elementary network address conversion routines for
     Open System Interconnection

SYNOPSIS
     #include <sys/types.h>
     #include <netiso/iso.h>

     struct iso_addr *
     iso_addr(char *cp);

     char *
     iso_ntoa(struct iso_addr *isoa);

DESCRIPTION
     The routine iso_addr() interprets character strings representing OSI ad-
     dresses, returning binary information suitable for use in system calls.
     The routine iso_ntoa() takes OSI addresses and returns ASCII strings rep-
     resenting NSAPs (network service access points) in a notation inverse to
     that accepted by iso_addr().

     Unfortunately, no universal standard exists for representing OSI network
     addresses.

     The format employed by iso_addr() is a sequence of hexadecimal ``digits''
     (optionally separated by periods), of the form:

	   <hex digits>.<hex digits>.<hex digits>

     Each pair of hexadecimal digits represents a byte with the leading digit
     indicating the higher-ordered bits.  A period following an even number of
     bytes has no effect (but may be used to increase legibility).  A period
     following an odd number of bytes has the effect of causing the byte of
     address being translated to have its higher order bits filled with zeros.

RETURN VALUES
     iso_ntoa() always returns a null terminated string.  iso_addr() always
     returns a pointer to a struct iso_addr.  (See BUGS.)

SEE ALSO
     iso(4)

HISTORY
     The iso_addr() and iso_ntoa() functions appeared in 4.3BSD-Reno.

BUGS
     The returned values reside in a static memory area.

     The function iso_addr() should diagnose improperly formed input, and
     there should be an unambiguous way to recognize this.

BSDI BSD/OS			 June 4, 1993				     1
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