/*-
 * Written by J.T. Conklin <jtc@netbsd.org>.
 * Public domain.
 *
 * $NetBSD: a64l.c,v 1.8 2000/01/22 22:19:19 mycroft Exp $
 * $FreeBSD: src/lib/libc/stdlib/a64l.c,v 1.2 2006/05/19 19:06:38 jkim Exp $
 */

#include <stdlib.h>
#include <inttypes.h>

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

        value = 0;
        shift = 0;
        for (i = 0; *s != '\0' && i < 6; i++, s++) {
                if (*s <= '/')
                        digit = *s - '/' + 1;
                else if (*s <= '0' + 9)
                        digit = *s - '0' + 2;
                else if (*s <= 'A' + 25)
                        digit = *s - 'A' + 12;
                else
                        digit = *s - 'a' + 38;

                value |= digit << shift;
                shift += 6;
        }
        return (value);
}