138 lines
4.0 KiB
Groff
138 lines
4.0 KiB
Groff
.\" $NetBSD: a64l.3,v 1.4 1999/03/22 19:44:57 garbled Exp $
|
|
.\"
|
|
.\" Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Klaus Klein.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the NetBSD
|
|
.\" Foundation, Inc. and its contributors.
|
|
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
.\" contributors may be used to endorse or promote products derived
|
|
.\" from this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd February 6, 1999
|
|
.Dt A64L 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm a64l ,
|
|
.Nm l64a ,
|
|
.Nm l64a_r
|
|
.Nd convert between a long integer and a base-64 ASCII string
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.Fd #include <stdlib.h>
|
|
.Ft long
|
|
.Fn a64l "const char *s"
|
|
.Ft char *
|
|
.Fn l64a "long int l"
|
|
.Ft int
|
|
.Fn l64a_r "long int l" "char *buffer" "int buflen"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn a64l
|
|
and
|
|
.Fn l64a
|
|
functions convert between a long integer and its base-64 ASCII string
|
|
representation.
|
|
.Pp
|
|
The characters used to represent ``digits'' are
|
|
`.' for 0,
|
|
`/' for 1,
|
|
`0' - `9' for 2 - 11,
|
|
`A' - `Z' for 12 - 37, and
|
|
`a' - `z' for 38 - 63.
|
|
.Pp
|
|
.Fn a64l
|
|
takes a pointer to a NUL-terminated base-64 ASCII string
|
|
representation,
|
|
.Fa s ,
|
|
and returns the corresponding long integer value.
|
|
.Pp
|
|
.Fn l64a
|
|
takes a long integer value,
|
|
.Fa l ,
|
|
and returns a pointer to the corresponding NUL-terminated base-64
|
|
ASCII string representation.
|
|
.Pp
|
|
.Fn l64a_r
|
|
performs a conversion identical to that of
|
|
.Fn l64a
|
|
and stores the resulting representation in the memory area pointed to by
|
|
.Fa buffer ,
|
|
consuming at most
|
|
.Fa buflen
|
|
characters including the terminating NUL character.
|
|
.Sh RETURN VALUES
|
|
On successful completion,
|
|
.Fn a64l
|
|
returns the long integer value corresponding to the input string.
|
|
If the string pointed to by
|
|
.Fa s
|
|
is an empty string,
|
|
.Fn a64l
|
|
returns a value of 0L.
|
|
.Pp
|
|
.Fn l64a
|
|
returns a pointer to the base-64 ASCII string representation corresponding to
|
|
the input value.
|
|
If
|
|
.Fa l
|
|
is 0L,
|
|
.Fn l64a
|
|
returns a pointer to an empty string.
|
|
.Pp
|
|
On successful completion,
|
|
.Fn l64a_r
|
|
returns 0; if
|
|
.Fa buffer
|
|
is of insufficient length, -1 is returned.
|
|
.Sh SEE ALSO
|
|
.Xr strtol 3
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn a64l
|
|
and
|
|
.Fn l64a
|
|
functions conform to
|
|
.St -xpg4.2 .
|
|
The
|
|
.Fn l64a_r
|
|
function conforms to
|
|
.St -svid4 ,
|
|
Multithreading Extension.
|
|
.Sh BUGS
|
|
The
|
|
.Fn l64a
|
|
function is not reentrant. The value returned by it points into a
|
|
static buffer area; subsequent calls to
|
|
.Fn la64a
|
|
may overwrite this buffer.
|
|
In multi-threaded applications,
|
|
.Fn l64a_r
|
|
should be used instead.
|