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
main()9 int 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