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32 .\" @(#)iso_addr.3 8.1 (Berkeley) 6/4/93
33 .\" $FreeBSD: src/lib/libc/net/iso_addr.3,v 1.3.2.4 2001/12/14 18:33:55 ru Exp $
34 .\" $DragonFly: src/lib/libc/net/iso_addr.3,v 1.2 2003/06/17 04:26:44 dillon Exp $
42 .Nd "elementary network address conversion routines for Open System Interconnection
49 .Fn iso_addr "char *cp"
51 .Fn iso_ntoa "struct iso_addr *isoa"
55 interprets character strings representing
57 addresses, returning binary information suitable
58 for use in system calls.
65 strings representing NSAPs (network service
67 notation inverse to that accepted by
70 Unfortunately, no universal standard exists for representing
74 The format employed by
76 is a sequence of hexadecimal
78 (optionally separated by periods),
80 .Bd -ragged -offset indent
81 <hex digits>.<hex digits>.<hex digits>
84 Each pair of hexadecimal digits represents a byte
85 with the leading digit indicating the higher-ordered bits.
86 A period following an even number of bytes has no
87 effect (but may be used to increase legibility).
88 A period following an odd number of bytes has the
89 effect of causing the byte of address being translated
90 to have its higher order bits filled with zeros.
93 always returns a null terminated string.
95 always returns a pointer to a struct iso_addr.
105 functions appeared in
109 reside in a static memory area.
113 should diagnose improperly formed input, and there should be an unambiguous
114 way to recognize this.