1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <time.h>
5#include <sys/time.h>
6#include <sys/resource.h>
7#include "fec.h"
8
9int main(){
10  unsigned char block[255];
11  int i;
12  void *rs;
13  struct rusage start,finish;
14  double extime;
15  int trials = 10000;
16
17  for(i=0;i<223;i++)
18    block[i] = 0x01;
19
20  rs = init_rs_char(8,0x187,112,11,32,0);
21  encode_rs_char(rs,block,&block[223]);
22
23  getrusage(RUSAGE_SELF,&start);
24  for(i=0;i<trials;i++){
25#if 0
26    block[0] ^= 0xff; /* Introduce an error */
27    block[2] ^= 0xff; /* Introduce an error */
28#endif
29    decode_rs_char(rs,block,NULL,0);
30  }
31  getrusage(RUSAGE_SELF,&finish);
32  extime = finish.ru_utime.tv_sec - start.ru_utime.tv_sec + 1e-6*(finish.ru_utime.tv_usec - start.ru_utime.tv_usec);
33
34  printf("Execution time for %d Reed-Solomon blocks using general decoder: %.2f sec\n",trials,extime);
35  printf("decoder speed: %g bits/s\n",trials*223*8/extime);
36
37
38  encode_rs_8(block,&block[223],0);
39  getrusage(RUSAGE_SELF,&start);
40  for(i=0;i<trials;i++){
41#if 0
42    block[0] ^= 0xff; /* Introduce an error */
43    block[2] ^= 0xff; /* Introduce an error */
44#endif
45    decode_rs_8(block,NULL,0,0);
46  }
47  getrusage(RUSAGE_SELF,&finish);
48  extime = finish.ru_utime.tv_sec - start.ru_utime.tv_sec + 1e-6*(finish.ru_utime.tv_usec - start.ru_utime.tv_usec);
49  printf("Execution time for %d Reed-Solomon blocks using CCSDS decoder: %.2f sec\n",trials,extime);
50  printf("decoder speed: %g bits/s\n",trials*223*8/extime);
51
52  exit(0);
53}
54
55