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Revert "bpo-26680: Incorporate is_integer in all built-in and standard library numeric types (GH-6121)" (GH-22584)

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This reverts commit 58a7da9e12.
This commit is contained in:
Raymond Hettinger 2020-10-07 16:43:44 -07:00 • committed by GitHub
parent 4f3c25043d
commit 4e0ce82058
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16 changed files with 24 additions and 223 deletions
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25
Lib/_pydecimal.py
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@ -3164,12 +3164,6 @@ class Decimal(object):
"""Return True if self is a zero; otherwise return False."""
return not self._is_special and self._int == '0'
def is_integer(self):
"""Return True is self is finite and integral; otherwise False."""
if self._is_special:
return False
return self.to_integral_value(rounding=ROUND_FLOOR) == self
def _ln_exp_bound(self):
"""Compute a lower bound for the adjusted exponent of self.ln().
In other words, compute r such that self.ln() >= 10**r. Assumes
@ -4665,25 +4659,6 @@ class Context(object):
a = _convert_other(a, raiseit=True)
return a.is_zero()
def is_integer(self, a):
"""Return True if the operand is integral; otherwise return False.
>>> ExtendedContext.is_integer(Decimal('0'))
True
>>> ExtendedContext.is_integer(Decimal('2.50'))
False
>>> ExtendedContext.is_integer(Decimal('-0E+2'))
True
>>> ExtendedContext.is_integer(Decimal('-0.5'))
False
>>> ExtendedContext.is_integer(Decimal('NaN'))
False
>>> ExtendedContext.is_integer(10)
True
"""
a = _convert_other(a, raiseit=True)
return a.is_integer()
def ln(self, a):
"""Returns the natural (base e) logarithm of the operand.