ceph/src/isa-l/crc/crc64_example.c

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   2   Copyright(c) 2011-2016 Intel Corporation All rights reserved.
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  28 **********************************************************************/
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <assert.h>
  32 #include "crc64.h"
  33
  34 #define BUF_SIZE 8192
  35 #define INIT_SEED 0x12345678
  36
  37 int main(int argc, char *argv[])
  38 {
  39         uint8_t inbuf[BUF_SIZE];
  40         uint64_t avail_in, total_in = 0;
  41         uint64_t crc64_checksum;
  42         FILE *in;
  43
  44         if (argc != 2) {
  45                 fprintf(stderr, "Usage: crc64_example infile\n");
  46                 exit(0);
  47         }
  48         in = fopen(argv[1], "rb");
  49         if (!in) {
  50                 fprintf(stderr, "Can't open %s for reading\n", argv[1]);
  51                 exit(0);
  52         }
  53
  54         printf("crc64_example -- crc64_ecma_refl:\n");
  55         fflush(0);
  56
  57         crc64_checksum = INIT_SEED;
  58         while ((avail_in = fread(inbuf, 1, BUF_SIZE, in))) {
  59                 // crc update mode
  60                 crc64_checksum = crc64_ecma_refl(crc64_checksum, inbuf, avail_in);
  61                 total_in += avail_in;
  62         }
  63
  64         fclose(in);
  65         printf("total length is %ld, checksum is 0x%lx\n", total_in, crc64_checksum);
  66
  67         return 0;
  68 }