static final int INVERSE_COMPUTE_FOR_WORD_OF_ALL_1S = 0xeee3ddcd;

    static int computeForWord(int word) {
      return STRIDE_TABLE[3][word & 0xFF]
          ^ STRIDE_TABLE[2][(word >>> 8) & 0xFF]
          ^ STRIDE_TABLE[1][(word >>> 16) & 0xFF]
          ^ STRIDE_TABLE[0][word >>> 24];
    }

    static int combine(int csum, int crc) {
      csum ^= crc;
      for (int i = 0; i < 4; i++) {