diff env/lib/python3.7/site-packages/future/builtins/newround.py @ 5:9b1c78e6ba9c draft default tip

"planemo upload commit 6c0a8142489327ece472c84e558c47da711a9142"

--- a/env/lib/python3.7/site-packages/future/builtins/newround.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,102 +0,0 @@
-"""
-``python-future``: pure Python implementation of Python 3 round().
-"""
-
-from future.utils import PYPY, PY26, bind_method
-
-# Use the decimal module for simplicity of implementation (and
-# hopefully correctness).
-from decimal import Decimal, ROUND_HALF_EVEN
-
-
-def newround(number, ndigits=None):
-    """
-    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.
-    """
-    return_int = False
-    if ndigits is None:
-        return_int = True
-        ndigits = 0
-    if hasattr(number, '__round__'):
-        return number.__round__(ndigits)
-
-    if ndigits < 0:
-        raise NotImplementedError('negative ndigits not supported yet')
-    exponent = Decimal('10') ** (-ndigits)
-
-    if PYPY:
-        # Work around issue #24: round() breaks on PyPy with NumPy's types
-        if 'numpy' in repr(type(number)):
-            number = float(number)
-
-    if isinstance(number, Decimal):
-        d = number
-    else:
-        if not PY26:
-            d = Decimal.from_float(number).quantize(exponent,
-                                                rounding=ROUND_HALF_EVEN)
-        else:
-            d = from_float_26(number).quantize(exponent, rounding=ROUND_HALF_EVEN)
-
-    if return_int:
-        return int(d)
-    else:
-        return float(d)
-
-
-### From Python 2.7's decimal.py. Only needed to support Py2.6:
-
-def from_float_26(f):
-    """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')
-
-    """
-    import math as _math
-    from decimal import _dec_from_triple    # only available on Py2.6 and Py2.7 (not 3.3)
-
-    if isinstance(f, (int, long)):        # handle integer inputs
-        return Decimal(f)
-    if _math.isinf(f) or _math.isnan(f):  # raises TypeError if not a float
-        return Decimal(repr(f))
-    if _math.copysign(1.0, f) == 1.0:
-        sign = 0
-    else:
-        sign = 1
-    n, d = abs(f).as_integer_ratio()
-    # int.bit_length() method doesn't exist on Py2.6:
-    def bit_length(d):
-        if d != 0:
-            return len(bin(abs(d))) - 2
-        else:
-            return 0
-    k = bit_length(d) - 1
-    result = _dec_from_triple(sign, str(n*5**k), -k)
-    return result
-
-
-__all__ = ['newround']