/*
 * Written by J.T. Conklin <jtc@NetBSD.org>.
 * Public domain.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: a64l.c,v 1.10 2012/06/08 11:15:26 abs Exp $");
#endif

#include "namespace.h"

#include <assert.h>
#include <stdlib.h>

#ifdef __weak_alias
__weak_alias(a64l,_a64l)
#endif

long
a64l(const char *s)
{
        long value, digit, shift;
        int i;

        _DIAGASSERT(s != NULL);

        value = 0;
        shift = 0;
        for (i = 0; *s && i < 6; i++, s++) {
                if (*s <= '/')
                        digit = *s - '.';
                else if (*s <= '9')
                        digit = *s - '0' + 2;
                else if (*s <= 'Z')
                        digit = *s - 'A' + 12;
                else
                        digit = *s - 'a' + 38; 

                value |= digit << shift;
                shift += 6;
        }

        return (long) value;
}