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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man/man3/a64l.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/man3/a64l.3')
-rw-r--r-- | man/man3/a64l.3 | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/man/man3/a64l.3 b/man/man3/a64l.3 new file mode 100644 index 0000000..9fe156a --- /dev/null +++ b/man/man3/a64l.3 @@ -0,0 +1,111 @@ +'\" t +\t +.\" Copyright 2002 walter harms (walter.harms@informatik.uni-oldenburg.de) +.\" +.\" SPDX-License-Identifier: GPL-1.0-or-later +.\" +.\" Corrected, aeb, 2002-05-30 +.\" +.TH a64l 3 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +a64l, l64a \- convert between long and base-64 +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <stdlib.h> +.P +.BI "long a64l(const char *" str64 ); +.BI "char *l64a(long " value ); +.fi +.P +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR a64l (), +.BR l64a (): +.nf + _XOPEN_SOURCE >= 500 +.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED + || /* glibc >= 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _SVID_SOURCE +.fi +.SH 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 +.BR a64l () +has length greater than six, only the first six bytes are used. +If the type +.I long +has more than 32 bits, then +.BR l64a () +uses only the low order 32 bits of +.IR value , +and +.BR a64l () +sign-extends its 32-bit result. +.P +The 64 digits in the base-64 system are: +.P +.RS +.nf +\&\[aq].\[aq] represents a 0 +\&\[aq]/\[aq] represents a 1 +0-9 represent 2-11 +A-Z represent 12-37 +a-z represent 38-63 +.fi +.RE +.P +So 123 = 59*64\[ha]0 + 1*64\[ha]1 = "v/". +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR l64a () +T} Thread safety MT-Unsafe race:l64a +T{ +.na +.nh +.BR a64l () +T} Thread safety MT-Safe +.TE +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +POSIX.1-2001. +.SH NOTES +The value returned by +.BR l64a () +may be a pointer to a static buffer, possibly overwritten +by later calls. +.P +The behavior of +.BR l64a () +is undefined when +.I value +is negative. +If +.I value +is zero, it returns an empty string. +.P +These functions are broken before glibc 2.2.5 +(puts most significant digit first). +.P +This is not the encoding used by +.BR uuencode (1). +.SH SEE ALSO +.BR uuencode (1), +.\" .BR itoa (3), +.BR strtoul (3) |