`b_asic.data_type`¶

B-ASIC Data Type Module.

class b_asic.data_type.DataType(wl: int | tuple[int, int], input_wl: int | tuple[int, int] | None = None, output_wl: int | tuple[int, int] | None = None, num_repr: NumRepresentation = NumRepresentation.FIXED_POINT, is_signed: bool = True, is_complex: bool = False, quantization_mode: QuantizationMode = QuantizationMode.TRUNCATION, overflow_mode: OverflowMode = OverflowMode.WRAPPING)¶

Data type specification.

All arguments are keyword only.

The number of bits can be specified in two few different ways.

num_repr	int	(int, int)
`FIXED_POINT`	(1, wl -1), one integer bits, wl bits in total	(integer bits, fractional bits)
`FLOATING_POINT`	N/A	(exponent bits, mantissa bits)

If input_wl or output_wl are not provided, they are assumed to be the same as wl.

Parameters:

wlint or (int, int): Number of bits for data type used in computations.
input_wlint or (int, int), optional: Number of bits for input data type.
output_wlint or (int, int), optional: Number of bits for output data type.
num_reprNumRepresentation, default: NumRepresentation.FIXED_POINT: Type of number representation to use.
is_signedbool, default: True: If the number representation is signed.
is_complexbool, default: False: If the number representation is complex-valued.
quantization_modeQuantizationMode, default: QuantizationMode.TRUNCATION: Type of quantization to use.
overflow_modeOverflowMode, default: OverflowMode.WRAPPING: Type of overflow to use.

property bits: int¶

Number of bits used for computations.

Returns:

int

property exp_bits: int¶

Number of exponent bits. Only valid for floating-point types.

Returns:

int

property frac_bits: int¶

Number of fractional bits. Only valid for fixed-point types.

Returns:

int

classmethod from_DataType(other: DataType) → Self¶

Create DataType subclass from other subclass.

Parameters:

otherDataType: The DataType to base new object on.

property high: int¶

Index of most significant bit.

Returns:

int

property input_bits: int¶

Number of bits used for input.

Returns:

int

property input_high: int¶

Index of most significant bit for input.

Returns:

int

property int_bits: int¶

Number of integer bits. Only valid for fixed-point types.

Returns:

int

property low: int¶

Index of least significant bit.

Returns:

int

property man_bits: int¶

Number of mantissa bits. Only valid for floating-point types.

Returns:

int

property output_bits: int¶

Number of bits used for output.

Returns:

int

property output_high: int¶

Index of most significant bit for output.

Returns:

int

class b_asic.data_type.NumRepresentation(*values)¶

Type of number representation.

FIXED_POINT = 1¶

FLOATING_POINT = 2¶

b_asic.data_type¶

`b_asic.data_type`¶