# File lib/innodb/page.rb, line 334
  def checksum_innodb
    unless size == 16384
      raise "Checksum calculation is only supported for 16 KiB pages"
    end

    @checksum_innodb ||= begin
      # Calculate the InnoDB checksum of the page header.
      c_partial_header = Innodb::Checksum.fold_enumerator(each_page_header_byte_as_uint8)

      # Calculate the InnoDB checksum of the page body.
      c_page_body = Innodb::Checksum.fold_enumerator(each_page_body_byte_as_uint8)

      # Add the two checksums together, and mask the result back to 32 bits.
      (c_partial_header + c_page_body) & Innodb::Checksum::MAX
    end
  end