B �A�[�@sDdZddlmZmZmZddlmZmZd dd�Zdd�Z dgZ dS) zD ``python-future``: pure Python implementation of Python 3 round(). �)�PYPY�PY26�bind_method)�Decimal�ROUND_HALF_EVENNcCs�d}|dkrd}d}t|d�r(|�|�S|dkr8td��td�|}trbdtt|��krbt|�}ts|t� |�j |td �}nt|�j |td �}|r�t |�St|�SdS) a� See Python 3 documentation: uses Banker's Rounding. Delegates to the __round__ method if for some reason this exists. If not, rounds a number to a given precision in decimal digits (default 0 digits). This returns an int when called with one argument, otherwise the same type as the number. ndigits may be negative. See the test_round method in future/tests/test_builtins.py for examples. FNTr� __round__z"negative ndigits not supported yet�10�numpy)Zrounding)�hasattrr�NotImplementedErrorrr�repr�type�floatrZ from_floatZquantizer� from_float_26�int)�number�ndigitsZ return_int�exponent�d�r�I/opt/alt/python37/lib/python3.7/site-packages/future/builtins/newround.py�newrounds& rc Cs�ddl}ddlm}t|ttf�r*t|�S|�|�s>|�|�rJtt |��S|� d|�dkr`d}nd}t|��\}}dd�}||�d}||t |d|�|�}|S) a�Converts a float to a decimal number, exactly. Note that Decimal.from_float(0.1) is not the same as Decimal('0.1'). Since 0.1 is not exactly representable in binary floating point, the value is stored as the nearest representable value which is 0x1.999999999999ap-4. The exact equivalent of the value in decimal is 0.1000000000000000055511151231257827021181583404541015625. >>> Decimal.from_float(0.1) Decimal('0.1000000000000000055511151231257827021181583404541015625') >>> Decimal.from_float(float('nan')) Decimal('NaN') >>> Decimal.from_float(float('inf')) Decimal('Infinity') >>> Decimal.from_float(-float('inf')) Decimal('-Infinity') >>> Decimal.from_float(-0.0) Decimal('-0') rN)�_dec_from_tripleg�?�cSs$|dkrttt|��dSdSdS)Nr�)�len�bin�abs)rrrr� bit_lengthYsz!from_float_26..bit_length�)�math�decimalr� isinstancer�longr�isinf�isnanr�copysignr�as_integer_ratio�str) �fZ_mathr�sign�nrr�k�resultrrrr7sr)N)�__doc__Zfuture.utilsrrrr!rrrr�__all__rrrr�s +,