a

q�dgv�@sPdZd
dl
mZ
d
dlmZmZmZ
d
dlmZm	Z	
d
dd�
Z
dd	�Zdg
ZdS)zD
``python-future``: pure Python implementation of Python 3 round().
�)
�division)�PYPY�PY26�bind_method)�Decimal�ROUND_HALF_EVENNcCs�d
}|
durd}d}
t|d�r(|�
|
�
Std�
|
}dtt|�
�
vrNt|�
}t|t�r^|}ntsnt�|�
}nt	|�
}|
dkr�t
||�
|}n|j|td�}|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__�10Znumpy)
�rounding)�hasattrrr�repr�type�float�
isinstancer�
from_float�
from_float_26�newround�quantizer�int)�number�ndigitsZ
return_int�exponent�
d�result�r�B/usr/local/lib/python3.9/site-packages/future/builtins/newround.pyr
s(













rc
	Cs�d
dl}
d
dl
m}
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

Ss$|d
krtt
t|�
�
�
dSd
SdS)Nr
�)�len�bin�abs)
rrrr�
bit_length_s

z!from_float_26.<locals>.bit_length�)�math�decimalrrr�longr�isinf�isnanr�copysignr!�as_integer_ratio�str)	�
fZ_mathr�sign�
nrr"�
krrrrr=s








r)
N)
�__doc__�
__future__rZfuture.utilsrrrr%rrrr�__all__rrrr�<module>
s

0,