1.\" $NetBSD: a64l.3,v 1.2 1998/06/14 17:54:59 kleink Exp $ 2.\" 3.\" Copyright (c) 1998 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Klaus Klein. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd June 14, 1998 38.Dt A64L 3 39.Os NetBSD 1.0 40.Sh NAME 41.Nm a64l , 42.Nm l64a 43.Nd convert between a long integer and a base-64 ASCII string 44.Sh LIBRARY 45.Lb libc 46.Sh SYNOPSIS 47.Fd #include <stdlib.h> 48.Ft long 49.Fn a64l "const char *s" 50.Ft char * 51.Fn l64a "long l" 52.Sh DESCRIPTION 53The 54.Fn a64l 55and 56.Fn l64a 57functions convert between a long integer and its base-64 ASCII string 58representation. 59.Pp 60The characters used to represent ``digits'' are 61`.' for 0, 62`/' for 1, 63`0' - `9' for 2 - 11, 64`A' - `Z' for 12 - 37, and 65`a' - `z' for 38 - 63. 66.Pp 67.Fn a64l 68takes a pointer to a NUL-terminated base-64 ASCII string 69representation, 70.Fa s , 71and returns the corresponding long integer value. 72.Pp 73.Fn l64a 74takes a long integer value, 75.Fa l , 76and returns a pointer to the corresponding NUL-terminated base-64 77ASCII string representation. 78.Sh RETURN VALUES 79On successful completion, 80.Fn a64l 81returns the long integer value corresponding to the input string. 82If the string pointed to by 83.Fa s 84is an empty string, 85.Fn a64l 86returns a value of 0L. 87.Pp 88.Fn l64a 89returns a pointer to the base-64 ASCII string representation corresponding to 90the input value. 91If 92.Fa l 93is 0L, 94.Fn l64a 95returns a pointer to an empty string. 96.Sh SEE ALSO 97.Xr strtol 3 98.Sh BUGS 99The 100.Fn l64a 101function is not reentrant. The value returned by it points into a 102static buffer area; subsequent calls to 103.Fn la64a 104may overwrite this buffer. 105