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https://github.com/servalproject/serval-dna.git
synced 2024-12-21 06:03:12 +00:00
50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
#include <stdio.h>
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#include "fixed.h"
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void encode_rs_8(data_t *data, data_t *parity,int pad);
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int decode_rs_8(data_t *data, int *eras_pos, int no_eras, int pad);
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int dump(char *name,unsigned char *addr,int len)
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{
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int i,j;
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fprintf(stderr,"Dump of %s\n",name);
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for(i=0;i<len;i+=16)
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{
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fprintf(stderr," %04x :",i);
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for(j=0;j<16&&(i+j)<len;j++) fprintf(stderr," %02x",addr[i+j]);
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for(;j<16;j++) fprintf(stderr," ");
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fprintf(stderr," ");
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for(j=0;j<16&&(i+j)<len;j++) fprintf(stderr,"%c",addr[i+j]>=' '&&addr[i+j]<0x7f?addr[i+j]:'.');
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fprintf(stderr,"\n");
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}
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return 0;
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}
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int main(int argc,char **argv)
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{
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unsigned char in[255];
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unsigned char out[255];
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srandom(getpid());
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int i;
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for(i=0;i<223;i++) in[i]=i;
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encode_rs_8(&in[0],&in[223],0);
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bcopy(in,out,255);
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dump("data with parity",out,255);
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for(i=0;i<16;i++) out[random()%255]^=0xff;
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dump("data with errors added",out,255);
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decode_rs_8(out,NULL,0,0);
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dump("data after error correction",out,223);
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return 0;
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}
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