www.pudn.com > reed-solomon-4.0.rar > exercise.c

/* Exercise an RS codec a specified number of times using random
 * data and error patterns
 *
 * Copyright 2002 Phil Karn, KA9Q
 * May be used under the terms of the GNU General Public License (GPL)
 */
#define FLAG_ERASURE 1 /* Randomly flag 50% of errors as erasures */

#include 
#include 

#ifdef FIXED
#include "fixed.h"
#define EXERCISE exercise_8
#elif defined(CCSDS)
#include "fixed.h"
#include "ccsds.h"
#define EXERCISE exercise_ccsds
#elif defined(BIGSYM)
#include "int.h"
#define EXERCISE exercise_int
#else
#include "char.h"
#define EXERCISE exercise_char
#endif

#ifdef FIXED
#define PRINTPARM printf("(255,223):");
#elif defined(CCSDS)
#define PRINTPARM printf("CCSDS (255,223):");
#else
#define PRINTPARM printf("(%d,%d):",rs->nn,rs->nn-rs->nroots);
#endif

/* Exercise the RS codec passed as an argument */
int EXERCISE(
#if !defined(CCSDS) && !defined(FIXED)
void *p,
#endif
int trials){
#if !defined(CCSDS) && !defined(FIXED)
  struct rs *rs = (struct rs *)p;
#endif
  DTYPE block[NN],tblock[NN];
  int i;
  int errors;
  int errlocs[NN];
  int derrlocs[NROOTS];
  int derrors;
  int errval,errloc;
  int erasures;
  int decoder_errors = 0;

  while(trials-- != 0){
    /* Test up to the error correction capacity of the code */
    for(errors=0;errors <= NROOTS/2;errors++){

      /* Load block with random data and encode */
      for(i=0;i