# module `concrete.fhe.extensions.round_bit_pattern` Declaration of `round_bit_pattern` function, to provide an interface for rounded table lookups. **Global Variables** --------------- - **MAXIMUM_TLU_BIT_WIDTH** --- ## function `round_bit_pattern` ```python round_bit_pattern( x: Union[int, integer, List, ndarray, Tracer], lsbs_to_remove: Union[int, AutoRounder], overflow_protection: bool = True, exactness: Optional[Exactness] = None ) → Union[int, integer, List, ndarray, Tracer] ``` Round the bit pattern of an integer. If `lsbs_to_remove` is an `AutoRounder`: corresponding integer value will be determined by adjustment process. x = 0b_0000_0000 , lsbs_to_remove = 3 => 0b_0000_0000 x = 0b_0000_0001 , lsbs_to_remove = 3 => 0b_0000_0000 x = 0b_0000_0010 , lsbs_to_remove = 3 => 0b_0000_0000 x = 0b_0000_0011 , lsbs_to_remove = 3 => 0b_0000_0000 x = 0b_0000_0100 , lsbs_to_remove = 3 => 0b_0000_1000 x = 0b_0000_0101 , lsbs_to_remove = 3 => 0b_0000_1000 x = 0b_0000_0110 , lsbs_to_remove = 3 => 0b_0000_1000 x = 0b_0000_0111 , lsbs_to_remove = 3 => 0b_0000_1000 x = 0b_1010_0000 , lsbs_to_remove = 3 => 0b_1010_0000 x = 0b_1010_0001 , lsbs_to_remove = 3 => 0b_1010_0000 x = 0b_1010_0010 , lsbs_to_remove = 3 => 0b_1010_0000 x = 0b_1010_0011 , lsbs_to_remove = 3 => 0b_1010_0000 x = 0b_1010_0100 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_0101 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_0110 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_0111 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_1000 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_1001 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_1010 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_1011 , lsbs_to_remove = 3 => 0b_1010_1000 x = 0b_1010_1100 , lsbs_to_remove = 3 => 0b_1011_0000 x = 0b_1010_1101 , lsbs_to_remove = 3 => 0b_1011_0000 x = 0b_1010_1110 , lsbs_to_remove = 3 => 0b_1011_0000 x = 0b_1010_1111 , lsbs_to_remove = 3 => 0b_1011_0000 x = 0b_1011_1000 , lsbs_to_remove = 3 => 0b_1011_1000 x = 0b_1011_1001 , lsbs_to_remove = 3 => 0b_1011_1000 x = 0b_1011_1010 , lsbs_to_remove = 3 => 0b_1011_1000 x = 0b_1011_1011 , lsbs_to_remove = 3 => 0b_1011_1000 x = 0b_1011_1100 , lsbs_to_remove = 3 => 0b_1100_0000 x = 0b_1011_1101 , lsbs_to_remove = 3 => 0b_1100_0000 x = 0b_1011_1110 , lsbs_to_remove = 3 => 0b_1100_0000 x = 0b_1011_1111 , lsbs_to_remove = 3 => 0b_1100_0000 **Args:** x (Union[int, np.integer, np.ndarray, Tracer]): input to round lsbs_to_remove (Union[int, AutoRounder]): number of the least significant bits to remove or an auto rounder object which will be used to determine the integer value overflow_protection (bool, default = True) whether to adjust bit widths and lsbs to remove to avoid overflows exactness (Optional[Exactness], default = None) select the exactness of the operation, None means use the global exactness. The global exactnessdefault is EXACT. It can be changed on the Configuration object. **Returns:** Union[int, np.integer, np.ndarray, Tracer]: Tracer that represents the operation during tracing rounded value(s) otherwise --- ## class `Adjusting` Adjusting class, to be used as early stop signal during adjustment. ### method `__init__` ```python __init__(rounder: 'AutoRounder', input_min: int, input_max: int) ``` --- ## class `AutoRounder` AutoRounder class, to optimize for number of msbs to keep during round bit pattern operation. ### method `__init__` ```python __init__(target_msbs: int = 16) ``` --- ### method `adjust` ```python adjust( function: Callable, inputset: Union[Iterable[Any], Iterable[Tuple[Any, ]]] ) ``` Adjust AutoRounders in a function using an inputset. --- ### method `dump_dict` ```python dump_dict() → Dict ``` Dump properties of the rounder to a dict. --- ### classmethod `load_dict` ```python load_dict(properties: Dict) → AutoRounder ``` Load previously dumped rounder.