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a �cv � @ sP d Z ddlmZ ddlmZmZmZ ddlmZm Z d dd�Z dd � Z dgZ dS ) zD ``python-future``: pure Python implementation of Python 3 round(). � )�division)�PYPY�PY26� bind_method)�Decimal�ROUND_HALF_EVENNc C s� d}|du rd}d}t | d�r(| �|�S td�| }dtt| ��v rNt| �} t| t�r^| }ntsnt�| �}nt | �}|dk r�t || �| }n|j |t d�}|r�t |�S t|�S dS ) 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__Z10Znumpy)Zrounding)�hasattrr r �repr�type�float� isinstancer Z from_float� from_float_26�newroundZquantizer �int)Znumber�ndigitsZ return_intZexponent�d�result� r �</usr/lib/python3.9/site-packages/future/builtins/newround.pyr s( r c C s� 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') r N)�_dec_from_tripleg �?� c S s$ | dkr t tt| ���d S dS d S )Nr � )�len�bin�abs)r r r r � bit_length_ s z!from_float_26.<locals>.bit_length� )Zmath�decimalr r r Zlongr ZisinfZisnanr Zcopysignr �as_integer_ratio�str) �fZ_mathr �sign�nr r �kr r r r r = s r )N) �__doc__Z __future__r Z future.utilsr r r r r r r r �__all__r r r r �<module> s 0,
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