tr_ht_hash_0.cc

这是处理语音信号的程序

// file: tr_ht_hash_0.cc
//

// isip include files
//
#include "train_hash_table.h"
#include "train_hash_table_constants.h"
 
// method: hash_insert_cc
//
// arguments:
//  Train_Hash_cell* cell : (input) the Train_Hash_cell to be copied and inserted
//                    in the hash table
//
// return: a Train_Hash_cell* pointer to the Train_Hash_cell containing this entry
//
// this method inserts an entry for the given Train_Hash_cell in the hash
// table using the standard hash function in Kernighan & Ritchie (pp
// 145)
//
Train_Hash_cell* Train_Hash_table::hash_insert_cc(Train_Hash_cell* cell_a) {

  // index variable
  //
  int_4 index = (int_4)0;
  Train_Hash_cell* cell = (Train_Hash_cell*)NULL;
  char_1* str = (char_1*)NULL;

  if (mode_d == TRAIN_HASH_TABLE_STRING_DRIVEN) {

    // the string to hash
    //
    cell_a->get_key_cc(str);
    
    // make sure this string is not already hashed
    //
    cell = hash_lookup_cc(str);
    if (cell == (Train_Hash_cell*)NULL) {
      
      // the input Train_Trace needs to be added to the table
      //
      cell = cell_a;
      
      // get the hash index
      //
      index = hash_string_cc(str);
      
      // insert this cell in the table
      //
      cell->set_next_cc(cells_d[index]);
      cells_d[index] = cell;
    }
    // otherwise output error message and exit program
    //
    else {
      error_handler_cc((char_1*)"hash_insert_cc",
		       (char_1*)"duplicate hashing of cell - each hash string must be unique");
      exit(ISIP_PROTO_ERROR);
    }
  }
  else {
    int_4* vec = (int_4*)NULL;
    int_4 vec_size = 0;
    
    // vector
    //
    cell_a->get_key_cc(vec, vec_size);
    
    // make sure this string is not already hashed
    //
    cell = hash_lookup_cc(vec, vec_size);
    if (cell == (Train_Hash_cell*)NULL) {
      
      // the input trace needs to be added to the table
      //
      cell = cell_a;
      
      // insert this cell in the table
      //
      cell->set_next_cc(cells_d[index]);
      cells_d[index] = cell;
    }
    
    // otherwise output error message and exit program
    //
    else {
      error_handler_cc((char_1*)"hash_insert_cc",
		       (char_1*)"duplicate hashing of cell - each hash string must be unique");
      exit(ISIP_PROTO_ERROR);
    }
  }
  
  // exit gracefully
  //
  return cell;
}