tests.c

PDF417编码的算法的源程序

      data[1] = 1;
   
      printf("Data [randloc,1] = %d %d \n", data[randloc], data[1]);

      syndromes( 144, 32);
  
      eras_dec_rs( data, erase_posit, 0, 144, 32 );
      
      if ( (data[randloc] != save_val) | ( data[1] != save_val2))
        {
	  printf(" Error at k = %d data[randloc] = %d save = %d \n", 
		 k , data[randloc], save_val );
          printf(" Error2 at k = %d data[1] = %d save = %d \n", 
		 k , data[1], save_val2 );
        }
      data[randloc] = save_val;
      data[1] = save_val2;
    }

  // two random errors at random locs

  for ( k = 0 ; k < 100 ; k += 1)
    {

       randint = rand();
       randint2 = rand();
      randint = randint & 1023;
      randint2 = randint2 & 1023;
      difval = randint %929;
      difval2 = randint2 % 929;


      randloc = rand();
      randloc = randloc % 80;

      randloc2 = rand();
      randloc2 = randloc % 80;

      if (randloc == randloc2)
	{
          randloc = (randloc+ 1)%929;
        }

      if ( difval > data[randloc])
        {
          
         this_error = difval - data[randloc];
	}
      else
	{
	  this_error = data[randloc] - difval;
        }

      save_val = data[randloc];
      data[randloc] = difval;    // cause error at location k
    
      save_val2 = data[1];


      if ( difval2 > data[randloc2])
        {
          
         this_error2 = difval2 - data[randloc2];
	}
      else
	{
	  this_error2 = data[randloc2] - difval2;
        }

      save_val2 = data[randloc2];
      data[randloc2] = difval2;    // cause error at location k
    
   
      printf("Data [randloc,randloc2] = %d %d \n", data[randloc], data[randloc2]);

      syndromes( 144, 32);
  
      eras_dec_rs( data, erase_posit, 0, 144, 32 );
      
      if ( (data[randloc] != save_val) || ( data[randloc2] != save_val2))
        {
	  printf(" Error at k = %d data[randloc] = %d save = %d \n", 
		 k , data[randloc], save_val );
          printf(" Error2 at k = %d data[randloc2] = %d save = %d \n", 
		 k , data[randloc2], save_val2 );
        }
      data[randloc] = save_val;
      data[randloc2] = save_val2;
    }

  for(j =0; j < 64; j += 1)
    {
      printf("data[%d] =  %d \n", 80 + j, data[80+j]);

    }

  // three random errors at random locs

  printf("Begin random triple errors \n");

  for ( k = 0 ; k < 100 ; k += 1)
    {

       randint = rand();
       randint2 = rand();
       randint3 = rand();

      randint = randint & 1023;
      randint2 = randint2 & 1023;
      randint3 = randint3 & 1023;

      difval = randint %929;
      difval2 = randint2 % 929;
      difval3 = randint3 % 929;

      randloc = rand();
      randloc = randloc % 80;
      

      randloc2 = rand();
      randloc2 = randloc % 80;

      if ( randloc2 > randloc)
        {
	  if (randloc2 - randloc != 1)
            {
              if ((randloc2 - randloc) % 2 == 0)
                {
                  randloc3 = (randloc2 - randloc)/2;
                }
              else
                {
                  randloc3 = ( 1 + randloc2 - randloc)/2;
                }
	    }
        }
      else   // randloc2 < or = randloc1
        {
          if (randloc2 != 0)
	    {
	      randloc3 = randloc2 - 1;
            }               
          else
            {
	      randloc3 = (randloc + 1) % 929;
            }
	}

      if (randloc == randloc2)
	{
          randloc = (randloc+ 1)%929;
        }

      if ( difval > data[randloc])
        {
          
         this_error = difval - data[randloc];
	}
      else
	{
	  this_error = data[randloc] - difval;
        }

      save_val = data[randloc];
      data[randloc] = difval;    // cause error at location k


      if ( difval2 > data[randloc2])
        {
          
         this_error2 = difval2 - data[randloc2];
	}
      else
	{
	  this_error2 = data[randloc2] - difval2;
        }

      save_val2 = data[randloc2];
      data[randloc2] = difval2;    // cause error at location k

      save_val3 = data[randloc3];
      data[randloc3] = difval3;    // cause error at location k
    
   
      printf("Data [randloc,randloc2,randloc3] = %d %d %d\n", data[randloc], data[randloc2], data[randloc3] );

      syndromes( 144, 32);
  
      eras_dec_rs( data, erase_posit, 0, 144, 32 );
      
      if ( (data[randloc] != save_val) || ( data[randloc2] != save_val2)
              || ( data[randloc3] != save_val3 ))
        {
	  printf(" Error at k = %d data[randloc] = %d save = %d \n", 
		 k , data[randloc], save_val );
          printf(" Error2 at k = %d data[randloc2] = %d save = %d \n", 
		 k , data[randloc2], save_val2 );
          printf(" Error3 at k = %d data[randloc3] = %d save = %d \n", 
		 k , data[randloc3], save_val3 );
        }
      data[randloc] = save_val;
      data[randloc2] = save_val2;
      data[randloc3] = save_val3;
    }

  for(j =0; j < 64; j += 1)
    {
      printf("data[%d] =  %d \n", 80 + j, data[80+j]);

    }

  // three random errors at random locs, error at 76

  printf("Begin random quad errors \n");

  for ( k = 0 ; k < 100 ; k += 1)
    {

       randint = rand();
       randint2 = rand()+ 17;
       randint3 = rand()-12;
       randint4 = rand()+74;

      randint = randint & 1023;
      randint2 = randint2 & 1023;
      randint3 = randint3 & 1023;
      randint4 = randint4 & 1023;

      difval = randint %929;
      difval2 = randint2 % 929;
      difval3 = randint3 % 929;
      difval4 = randint4 % 929;

      save_val = data[33];
      data[33] = difval;    // cause error at location k

      save_val2 = data[34];
      data[34] = difval2;    // cause error at location k

      save_val3 = data[35];
      data[35] = difval3;    // cause error at location k

      save_val4 = data[36];
      data[36] = difval4;    // cause error at location k

      printf("Data [33,34,35,36] = %d %d %d %d\n",
       data[33], data[34], data[35], data[36] );

      syndromes( 144, 32);
  
      printf("Done with syndromes \n");

      eras_dec_rs( data, erase_posit, 0, 144, 32 );
      
      printf("Returned from eras_dec_rs \n");

      if ( (data[33] != save_val) || ( data[34] != save_val2)
        || ( data[35] != save_val3 ) || ( data[36] != save_val4))
        {
          
		
	  printf(" Error at k = %d data[33] = %d save = %d \n", 
		 k , data[33], save_val );
          printf(" Error2 at k = %d data[34] = %d save = %d \n", 
		 k , data[34], save_val2 );
          printf(" Error3 at k = %d data[35] = %d save = %d \n", 
		 k , data[randloc3], save_val3 );
          printf(" Error4 at k = %d data[36] = %d save = %d \n", 
		 k , data[36], save_val4);
        }
      data[33] = save_val;
      data[34] = save_val2;
      data[35] = save_val3;
      data[36] = save_val4;
    }

  codeindex = 80;

  generateEC(  data, 80, 128 );  /* do the error correction, 128 */

  syndromes( 208, 64);

  for (j = 0; j < 208; j += 1)
    {
      erase_posit[j] = 0;
    }

  //

  printf("Begin random errors for level 6 ecc\n");

  for ( k = 0 ; k < 100 ; k += 1)
    {
      for ( j = 0; j < 64; j += 1)
	{
	  randin[j] = rand();
        }

      for ( j = 0; j < 64; j += 1)
	{
	  randin[j] = randin[j] & 1023;
          difvals[j] = randin[j] % 929;
        }
      for ( j = 0; j < 64; j += 1)
        {
          savevals[j] = data[13+j];
          data[33+j] = difvals[j];
        }


      syndromes( 208, 64);
  
      printf("Done with syndromes \n");

      eras_dec_rs( data, erase_posit, 0, 208, 64 );
      
      printf("Returned from eras_dec_rs \n");

      haserror = FALSE;

      for ( j = 0; j < 64; j += 1)
        {
          if ( data[13+j] != savevals[j])
            {
	      haserror = TRUE;
            }
        }
      if ( haserror == TRUE )
      
        {
      		
	  printf("Error:  Level 6 ecc failed \n");
 
        }
   
      for ( j = 0; j < 64; j += 1)
	{
	  data[13+j] = savevals[j];
        }

    }

  codeindex = 80;

  generateEC(  data, 80, 256 );  /* do the error correction, 256 */

  syndromes( 336, 128);

  for (j = 0; j < 336; j += 1)
    {
      erase_posit[j] = 0;
    }

  //

  printf("Begin random  six errors \n");

  for ( k = 0 ; k < 100 ; k += 1)
    {

       randint = rand();
       randint2 = rand()+ 17;
       randint3 = rand()-12;
       randint4 = rand()+74;
       randint5 = rand()-11;
       randint6 = rand()+12;

      randint = randint & 1023;
      randint2 = randint2 & 1023;
      randint3 = randint3 & 1023;
      randint4 = randint4 & 1023;
      randint5 = randint5 & 1023;
      randint6 = randint6 & 1023;

      difval = randint % 929;
      difval2 = randint2 % 929;
      difval3 = randint3 % 929;
      difval4 = randint4 % 929;
      difval5 = randint5 % 929;
      difval6 = randint6 & 929;

      save_val = data[33];
      data[33] = difval;    // cause error at location k

      save_val2 = data[34];
      data[34] = difval2;    // cause error at location k

      save_val3 = data[35];
      data[35] = difval3;    // cause error at location k

      save_val4 = data[36];
      data[36] = difval4;    // cause error at location k

      save_val5 = data[37];
      data[37] = difval5;    // cause error at location k

      save_val6 = data[38];
      data[38] = difval6;    // cause error at location k

      printf("Data [33,34,35,36,37, 38] = %d %d %d %d %d %d\n",
       data[33], data[34], data[35], data[36], data[37], data[38] );

      syndromes( 336, 128);
  
      printf("Done with syndromes \n");

      eras_dec_rs( data, erase_posit, 0, 208, 64 );
      
      printf("Returned from eras_dec_rs \n");

      if ( (data[33] != save_val) || ( data[34] != save_val2)
        || ( data[35] != save_val3 ) || ( data[36] != save_val4) ||
            ( data[37] != save_val5) || ( data[38] != save_val6))
        {
          
		
	  printf(" Error at k = %d data[33] = %d save = %d \n", 
		 k , data[33], save_val );
          printf(" Error2 at k = %d data[34] = %d save = %d \n", 
		 k , data[34], save_val2 );
          printf(" Error3 at k = %d data[35] = %d save = %d \n", 
		 k , data[randloc3], save_val3 );
          printf(" Error4 at k = %d data[36] = %d save = %d \n", 
		 k , data[36], save_val4);
          printf(" Error5 at k = %d data[37] = %d save = %d \n", 
		 k , data[36], save_val5);
          printf(" Error6 at k = %d data[38] = %d save = %d \n", 
		 k , data[38], save_val6);
        }
      data[33] = save_val;
      data[34] = save_val2;
      data[35] = save_val3;
      data[36] = save_val4;
      data[37] = save_val5;
      data[38] = save_val6;
    }

  for(j =0; j < 64; j += 1)
    {
      printf("data[%d] =  %d \n", 80 + j, data[80+j]);

    }

  /*
  data[79] = 80; 
  data[78] = 924; 
  data[77] = 0; 
  data[76] = 9; 
  data[75] = 334; 
  data[74] = 508; 
  data[73] = 496; 
  data[72] = 900; 
  data[71] = 840; 
  data[70] = 182; 
  data[69] = 858; 
  data[68] = 877; 
  data[67] = 924; 
  data[66] = 248; 
  data[65] = 44;
  data[64] = 50;
  data[63] = 62;
  data[62] = 572;
  data[61] = 16;
  data[60] = 683;
  data[59] = 304;
  data[58] = 781;
  data[57] = 321;
  data[56] = 17;
  data[55] = 71;
  data[54] = 175;
  data[53] = 89;
  data[52] = 365;
  data[51] = 0;
  data[50] = 594;
  data[49] = 844;
  data[48] = 351;
  data[47] = 720;
  data[46] = 163;
  data[45] = 128;
  data[44] = 227;
  data[43] = 810;
  data[42] = 552;
  data[41] = 349;
  data[40] = 422;
  data[39] = 462;
  data[38] = 861;
  data[37] = 733;
  data[36] = 80;
  data[35] = 681;
  data[34] = 553;
  data[33] = 501;
  data[32] = 669;
  data[31] = 0;
  data[30] = 439;
  data[29] = 484;
  data[28] = 888;
  data[27] = 103;
  data[26] = 349;
  data[25] = 133;
  data[24] = 113;
  data[23] = 116;
  data[22] = 757;
  data[21] = 221;
  data[20] = 781;
  data[19] = 645;
  data[18] = 562;
  data[17] = 333;
  data[16] = 16;
  data[15] = 134;
  data[14] = 279;
  data[13] = 497;
  data[12] = 660;
  data[11] = 371;
  data[10] = 110;
  data[9] = 857;
  data[8] = 319;
  data[7] = 593;
  data[6] = 370;
  data[5] = 700;
  data[4] = 488;
  data[3] = 30;
  data[2] = 147;
  data[1] = 900;         
  data[0] = 900;

  generateEC(  data, 80, 64 ); 

  for(j =0; j < 64; j += 1)
    {
      printf("data[%d] =  %d \n", 80 + j, data[80+j]);

    }
    */
}