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Technical Reference: Base Operating System and Extensions, Volume 1

ns_addr Subroutine


XNS address conversion routines.


Standard C Library (libc.a)


#include <sys/types.h>
#include <netns/ns.h>

struct ns_addr(char *cp


The ns_addr subroutine interprets character strings representing XNS addresses, returning binary information suitable for use in system calls.

The ns_addr subroutine separates an address into one to three fields using a single delimiter and examines each field for byte separators (colon or period). The delimiters are:

. period
: colon
# pound sign.

If byte separators are found, 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-networked-order bytes. Next, the field is inspected for hyphens, which would indicate the field is a number in decimal notation with hyphens separating the millenia. The field is assumed to be a number, interpreted as hexadecimal, if a leading 0x (as in C), a trailing H, (as in Mesa), or any super-octal digits are present. The field is interpreted as octal if a leading 0 is present and there are no super-octal digits. Otherwise, the field is converted as a decimal number.


cp Returns a pointer to the address of a ns_addr structure.

Implementation Specifics

The ns_addr subroutine is part of Base Operating System (BOS) Runtime.

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