a64l.c revision 1.6 
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 1.6 1999/09/16 11:45:33 lukem Exp $");
9#endif
10
11#include "namespace.h"
12
13#include <assert.h>
14#include <stdlib.h>
15
16#ifdef __weak_alias
17__weak_alias(a64l,_a64l);
18#endif
19
20long
21a64l(s)
22	const char *s;
23{
24	long value, digit, shift;
25	int i;
26
27	_DIAGASSERT(s != NULL);
28#ifdef _DIAGNOSTIC
29	if (s == NULL)
30		return (0L);
31#endif
32
33	value = 0;
34	shift = 0;
35	for (i = 0; *s && i < 6; i++, s++) {
36		if (*s <= '/')
37			digit = *s - '.';
38		else if (*s <= '9')
39			digit = *s - '0' + 2;
40		else if (*s <= 'Z')
41			digit = *s - 'A' + 12;
42		else
43			digit = *s - 'a' + 38;
44
45		value |= digit << shift;
46		shift += 6;
47	}
48
49	return (long) value;
50}
51