/* chksum.c -- compute a checksum

   This file is part of the LZO real-time data compression library.

   Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer

   All Rights Reserved.

   The LZO library is free software; you can redistribute it and/or

   modify it under the terms of the GNU General Public License as

   published by the Free Software Foundation; either version 2 of

   the License, or (at your option) any later version.

   The LZO library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with the LZO library; see the file COPYING.

   If not, write to the Free Software Foundation, Inc.,

   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

   Markus F.X.J. Oberhumer

   <markus@oberhumer.com>

   http://www.oberhumer.com/opensource/lzo/

 */

#include "lzo/lzoconf.h"

/* utility layer */

#define WANT_LZO_MALLOC 1

#include "examples/portab.h"

/*************************************************************************

//

**************************************************************************/

int main(int argc, char *argv[])

{

    lzo_bytep block;

    lzo_uint block_size;

    lzo_uint32_t adler, crc;

    if (argc < 0 && argv == NULL)   /* avoid warning about unused args */

        return 0;

    if (lzo_init() != LZO_E_OK)

    {

        printf("lzo_init() failed !!!\n");

        return 4;

    }

/* prepare the block */

    block_size = 128 * 1024L;

    block = (lzo_bytep) lzo_malloc(block_size);

    if (block == NULL)

    {

        printf("out of memory\n");

        return 3;

    }

    lzo_memset(block, 0, block_size);

/* adler32 checksum */

    adler = lzo_adler32(0, NULL, 0);

    adler = lzo_adler32(adler, block, block_size);

    if (adler != 0x001e0001UL)

    {

        printf("adler32 checksum error !!! (0x%08lx)\n", (long) adler);

        return 2;

    }

/* crc32 checksum */

    crc = lzo_crc32(0, NULL, 0);

    crc = lzo_crc32(crc, block, block_size);

    if (crc != 0x7ee8cdcdUL)

    {

        printf("crc32 checksum error !!! (0x%08lx)\n", (long) crc);

        return 1;

    }

    lzo_free(block);

    printf("Checksum test passed.\n");

    return 0;

}

/* vim:set ts=4 sw=4 et: */