java/tsfile/src/main/java/org/apache/tsfile/encoding/decoder/DoubleRLBEDecoder.java [69:115]:
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    fibonacci = new long[blocksize * 2 + 1];
    for (int i = 0; i < blocksize * 2; i++) {
      data[i] = 0;
      fibonacci[i] = 0;
    }
    fibonacci[0] = 1;
    fibonacci[1] = 1;
  }

  /**
   * read a block from inputstream buffer
   *
   * @param buffer inputstream buffer
   */
  private void readT(ByteBuffer buffer) {
    // read the header of the block
    readhead(buffer);
    while (writeindex < blocksize - 1) {
      int seglength = 0;
      long runlength = 0;
      // read first 7 bits: length of each binary words.
      for (int j = 6; j >= 0; j--) {
        seglength |= (readbit(buffer) << j);
      }

      // generate repeat time of rle on delta
      int now = readbit(buffer);
      int next = readbit(buffer);

      int j = 1;
      while (true) {
        if (j > 1) fibonacci[j] = fibonacci[j - 1] + fibonacci[j - 2];
        if (now == 1) runlength += fibonacci[j];
        // when now and next are both 1, the 1 of next is the symbol of ending of fibonacci code
        if (now == 1 && next == 1) break;
        j++;
        now = next;
        next = readbit(buffer);
      }
      // read the delta value one by one
      for (long i = 1; i <= runlength; i++) {

        long readlongtemp = 0;
        for (int k = seglength - 1; k >= 0; k--) {
          readlongtemp += ((long) readbit(buffer) << k);
        }
        if (seglength == 64) readlongtemp -= ((long) 1 << 63);
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java/tsfile/src/main/java/org/apache/tsfile/encoding/decoder/LongRLBEDecoder.java [69:115]:
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    fibonacci = new long[blocksize * 2 + 1];
    for (int i = 0; i < blocksize * 2; i++) {
      data[i] = 0;
      fibonacci[i] = 0;
    }
    fibonacci[0] = 1;
    fibonacci[1] = 1;
  }

  /**
   * read a block from inputstream buffer
   *
   * @param buffer inputstream buffer
   */
  private void readT(ByteBuffer buffer) {
    // read the header of the block
    readhead(buffer);
    while (writeindex < blocksize - 1) {
      int seglength = 0;
      long runlength = 0;
      // read first 7 bits: length of each binary words.
      for (int j = 6; j >= 0; j--) {
        seglength |= (readbit(buffer) << j);
      }

      // generate repeat time of rle on delta
      int now = readbit(buffer);
      int next = readbit(buffer);

      int j = 1;
      while (true) {
        if (j > 1) fibonacci[j] = fibonacci[j - 1] + fibonacci[j - 2];
        if (now == 1) runlength += fibonacci[j];
        // when now and next are both 1, the 1 of next is the symbol of ending of fibonacci code
        if (now == 1 && next == 1) break;
        j++;
        now = next;
        next = readbit(buffer);
      }
      // read the delta value one by one
      for (long i = 1; i <= runlength; i++) {

        long readlongtemp = 0;
        for (int k = seglength - 1; k >= 0; k--) {
          readlongtemp += ((long) readbit(buffer) << k);
        }
        if (seglength == 64) readlongtemp -= ((long) 1 << 63);
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