File: //usr/lib/python3/dist-packages/future/builtins/__pycache__/newround.cpython-310.pyc
o
,1�]m � @ sD d Z ddlmZmZmZ ddlmZmZ d dd�Zdd� Z dgZ
dS )
zD
``python-future``: pure Python implementation of Python 3 round().
� )�PYPY�PY26�bind_method)�Decimal�ROUND_HALF_EVENNc C s� d}|du r
d}d}t | d�r| �|�S |dk rtd��td�| }tr1dtt| ��v r1t| �} t| t�r9| }nt sFt�
| �j|td �}n t
| �j|td �}|rUt|�S t|�S )
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)�rounding)�hasattrr �NotImplementedErrorr r �repr�type�float�
isinstancer �
from_float�quantizer �
from_float_26�int)�number�ndigits�
return_int�exponent�d� r �:/usr/lib/python3/dist-packages/future/builtins/newround.py�newround s,
�r c C s� ddl }ddlm} t| ttf�rt| �S |�| �s|�| �r%tt | ��S |�
d| �dkr0d}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 | dkrt tt| ���d S dS )Nr � )�len�bin�abs)r r r r �
bit_length\ s z!from_float_26.<locals>.bit_length� )�math�decimalr r r �longr �isinf�isnanr
�copysignr"