code: def _get_unsigned_params(conv):
      
      conv["sign_mask"] = 0
      conv["int_min"] = 0
      conv["int_mask"] = sum([2 ** i for i in range(conv["bin_point"], 
          conv["bits"])])
      conv["int_max"] = sum([2 ** i for i in range(conv["bits"] -
          conv["bin_point"])])
docs: Fill the sign-dependent params of the conv structure in case of unsigned 
      conversion
      @param conv: the structure to be filled