a64l.c revision 1.5 
1/*
2 * Written by J.T. Conklin <jtc@netbsd.org>.
3 * Public domain.
4 */
5
6#include <sys/cdefs.h>
7#if defined(LIBC_SCCS) && !defined(lint)
8__RCSID("$NetBSD: a64l.c,v 1.5 1997/07/21 14:08:48 jtc Exp $");
9#endif
10
11#include "namespace.h"
12#include <stdlib.h>
13
14#ifdef __weak_alias
15__weak_alias(a64l,_a64l);
16#endif
17
18long
19a64l(s)
20	const char *s;
21{
22	long value, digit, shift;
23	int i;
24
25	value = 0;
26	shift = 0;
27	for (i = 0; *s && i < 6; i++, s++) {
28		if (*s <= '/')
29			digit = *s - '.';
30		else if (*s <= '9')
31			digit = *s - '0' + 2;
32		else if (*s <= 'Z')
33			digit = *s - 'A' + 12;
34		else
35			digit = *s - 'a' + 38;
36
37		value |= digit << shift;
38		shift += 6;
39	}
40
41	return (long) value;
42}
43