1 .\" Copyright (c) 2005 Tom Rhodes
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25 .\" Portions of this text are reprinted and reproduced in electronic form
26 .\" from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
27 .\" Portable Operating System Interface (POSIX), The Open Group Base
28 .\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
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35 .\" $FreeBSD: src/lib/libc/stdlib/a64l.3,v 1.3 2006/09/30 10:29:43 ru Exp $
44 .Nd "convert between a long integer and a base-64 ASCII string"
50 .Fn a64l "const char *s"
54 .Fn l64a_r "long int l" "char *buffer" "int buflen"
56 These functions are used to maintain numbers stored in radix-64
59 This is a notation by which 32-bit integers can be represented by
60 up to six characters; each character represents a digit in
62 If the type long contains more than 32 bits, only the low-order
63 32 bits are used for these operations.
65 The characters used to represent
87 function takes a pointer to a radix-64 representation, in which the first
88 digit is the least significant, and returns a corresponding
91 If the string pointed to by
93 contains more than six characters,
96 If the first six characters of the string contain a null terminator,
98 uses only characters preceding the null terminator.
101 function scans the character string from left to right with the least
102 significant digit on the left, decoding each character as a 6-bit
104 If the type long contains more than 32 bits, the resulting value is
110 is a null pointer or the string pointed to by
112 was not generated by a previous call to
119 argument and returns a pointer to the corresponding
120 radix-64 representation.
123 is unspecified if value is negative.
125 The value returned by
127 is a pointer into a static buffer.
130 may overwrite the buffer.
134 function performs a conversion identical to that of
136 and stores the resulting representation in the memory area pointed to by
140 characters including the terminating
144 On successful completion,
148 value resulting from conversion of the input string.
149 If a string pointed to by
157 function returns a pointer to the radix-64 representation.
160 returns a pointer to an empty string.
169 functions are derived from
184 .An Tom Rhodes Aq Mt trhodes@FreeBSD.org .
185 Almost all of this manual page came from the