/* $Id$ */
/* Copyright (c) 2018 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libc */
/* All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */



#include <strings.h>
#include <stdio.h>
#include <errno.h>


/* ffs */
static int _ffs(char const * progname)
{
	int ret = 0;
	int i;
	int r;

	for(i = 0; i < 32; i++)
		if((r = ffs(1 << i)) != i
				|| (r = ffs(3 << i)) != i)
		{
			printf("%s: Obtained %d (expected: %d)\n", progname, r,
					i);
			ret = 2;
		}
	if((r = ffs(0)) != 0)
	{
		printf("%s: Obtained %d (expected: %d)\n", progname, r, 0);
		ret = 3;
	}
	return ret;
}


/* main */
int main(int argc, char * argv[])
{
	int ret = 0;
	(void) argc;

	ret |= _ffs(argv[0]);
	return (ret == 0) ? 0 : 2;
}