File: //proc/self/root/opt/alt/python27/lib/python2.7/site-packages/future/builtins/newround.pyo
�
�A�[c @ sZ d Z d d l m Z m Z m Z d d l m Z m Z d d � Z d � Z
d g Z d S( sD
``python-future``: pure Python implementation of Python 3 round().
i����( t PYPYt PY26t bind_method( t Decimalt ROUND_HALF_EVENc C s� t } | d k r! t } d } n t | d � r= | j | � S| d k rX t d � � n t d � | } t r� d t t | � � k r� t
| � } q� n t s� t j | � j
| d t �} n t | � j
| d t �} | r� t | � St
| � Sd S( s�
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.
i t __round__s" negative ndigits not supported yett 10t numpyt roundingN( t Falset Nonet Truet hasattrR t NotImplementedErrorR R t reprt typet floatR t
from_floatt quantizeR t
from_float_26t int( t numbert ndigitst
return_intt exponentt d( ( sI /opt/alt/python27/lib/python2.7/site-packages/future/builtins/newround.pyt newround s&
c C s� d d l } d d l m } t | t t f � r; t | � S| j | � sY | j | � ri t t | � � S| j
d | � d k r� d } n d } t | � j � \ } } d � } | | � d } | | t
| d | � | � } | S( s� 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')
i����N( t _dec_from_tripleg �?i i c S s. | d k r& t t t | � � � d Sd Sd S( Ni i ( t lent bint abs( R ( ( sI /opt/alt/python27/lib/python2.7/site-packages/future/builtins/newround.pyt
bit_lengthY s i ( t matht decimalR t
isinstanceR t longR t isinft isnanR t copysignR t as_integer_ratiot str( t ft _mathR t signt nR R t kt result( ( sI /opt/alt/python27/lib/python2.7/site-packages/future/builtins/newround.pyR 7 s
!R N( t __doc__t future.utilsR R R R! R R R
R R t __all__( ( ( sI /opt/alt/python27/lib/python2.7/site-packages/future/builtins/newround.pyt <module> s
+ ,