A64L(3)                    Linux Programmer's Manual                   A64L(3)

NAME
       a64l, l64a - convert between long and base-64

SYNOPSIS
       #include <stdlib.h>

       long a64l(const char *str64);

       char *l64a(long value);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       a64l(), l64a():
           _SVID_SOURCE || _XOPEN_SOURCE >= 500 ||
           _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED

DESCRIPTION
       These functions provide a conversion between 32-bit long  integers  and
       little-endian  base-64  ASCII  strings (of length zero to six).  If the
       string used as argument for a64l() has length greater  than  six,  only
       the  first six bytes are used.  If the type long has more than 32 bits,
       then l64a() uses only the low order 32 bits of value, and a64l()  sign-
       extends its 32-bit result.

       The 64 digits in the base-64 system are:

              '.'  represents a 0
              '/'  represents a 1
              0-9  represent  2-11
              A-Z  represent 12-37
              a-z  represent 38-63

       So 123 = 59*64^0 + 1*64^1 = "v/".

ATTRIBUTES
   Multithreading (see pthreads(7))
       The l64a() function is not thread-safe.

       The a64l() function is thread-safe.

CONFORMING TO
       POSIX.1-2001.

NOTES
       The  value returned by l64a() may be a pointer to a static buffer, pos-
       sibly overwritten by later calls.

       The behavior of l64a() is undefined when value is negative.   If  value
       is zero, it returns an empty string.

       These functions are broken in glibc before 2.2.5 (puts most significant
       digit first).

       This is not the encoding used by uuencode(1).

SEE ALSO
       uuencode(1), strtoul(3)

COLOPHON
       This page is part of release 3.74 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       http://www.kernel.org/doc/man-pages/.

                                  2014-05-28                           A64L(3)

Czas wygenerowania: 0.00013 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

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