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30 .\" @(#)iso_addr.3 8.1 (Berkeley) 6/4/93
38 .Nd elementary network address conversion routines for Open System Interconnection
45 .Fn iso_addr "const char *cp"
47 .Fn iso_ntoa "struct iso_addr *isoa"
51 interprets character strings representing
53 addresses, returning binary information suitable
54 for use in system calls.
61 strings representing NSAPs (network service
63 notation inverse to that accepted by
66 Unfortunately, no universal standard exists for representing
70 The format employed by
72 is a sequence of hexadecimal
74 (optionally separated by periods),
76 .Bd -filled -offset indent
77 \*[Lt]hex digits\*[Gt].\*[Lt]hex digits\*[Gt].\*[Lt]hex digits\*[Gt]
80 Each pair of hexadecimal digits represents a byte
81 with the leading digit indicating the higher-ordered bits.
82 A period following an even number of bytes has no
83 effect (but may be used to increase legibility).
84 A period following an odd number of bytes has the
85 effect of causing the byte of address being translated
86 to have its higher order bits filled with zeros.
89 always returns a null terminated string.
91 always returns a pointer to a struct iso_addr.
101 functions appeared in
105 reside in a static memory area.
109 should diagnose improperly formed input, and there should be an unambiguous
110 way to recognize this.