release/src/router/lzo/tests/chksum.c

   1 /* chksum.c -- compute a checksum
   2
   3    This file is part of the LZO real-time data compression library.
   4
   5    Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer
   6    All Rights Reserved.
   7
   8    The LZO library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2 of
  11    the License, or (at your option) any later version.
  12
  13    The LZO library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with the LZO library; see the file COPYING.
  20    If not, write to the Free Software Foundation, Inc.,
  21    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22
  23    Markus F.X.J. Oberhumer
  24    <markus@oberhumer.com>
  25    http://www.oberhumer.com/opensource/lzo/
  26  */
  27
  28
  29 #include "lzo/lzoconf.h"
  30
  31 /* utility layer */
  32 #define WANT_LZO_MALLOC 1
  33 #include "examples/portab.h"
  34
  35
  36 /*************************************************************************
  37 //
  38 **************************************************************************/
  39
  40 int main(int argc, char *argv[])
  41 {
  42     lzo_bytep block;
  43     lzo_uint block_size;
  44     lzo_uint32_t adler, crc;
  45
  46     if (argc < 0 && argv == NULL)   /* avoid warning about unused args */
  47         return 0;
  48
  49     if (lzo_init() != LZO_E_OK)
  50     {
  51         printf("lzo_init() failed !!!\n");
  52         return 4;
  53     }
  54
  55 /* prepare the block */
  56     block_size = 128 * 1024L;
  57     block = (lzo_bytep) lzo_malloc(block_size);
  58     if (block == NULL)
  59     {
  60         printf("out of memory\n");
  61         return 3;
  62     }
  63     lzo_memset(block, 0, block_size);
  64
  65 /* adler32 checksum */
  66     adler = lzo_adler32(0, NULL, 0);
  67     adler = lzo_adler32(adler, block, block_size);
  68     if (adler != 0x001e0001UL)
  69     {
  70         printf("adler32 checksum error !!! (0x%08lx)\n", (long) adler);
  71         return 2;
  72     }
  73
  74 /* crc32 checksum */
  75     crc = lzo_crc32(0, NULL, 0);
  76     crc = lzo_crc32(crc, block, block_size);
  77     if (crc != 0x7ee8cdcdUL)
  78     {
  79         printf("crc32 checksum error !!! (0x%08lx)\n", (long) crc);
  80         return 1;
  81     }
  82
  83     lzo_free(block);
  84     printf("Checksum test passed.\n");
  85     return 0;
  86 }
  87
  88
  89 /* vim:set ts=4 sw=4 et: */