diff options
Diffstat (limited to 'Lib/decimal.py')
| -rw-r--r-- | Lib/decimal.py | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/Lib/decimal.py b/Lib/decimal.py index 159669c3f3..52ac7a8b8b 100644 --- a/Lib/decimal.py +++ b/Lib/decimal.py @@ -845,8 +845,11 @@ class Decimal(object): # subject of what should happen for a comparison involving a NaN. # We take the following approach: # - # == comparisons involving a NaN always return False - # != comparisons involving a NaN always return True + # == comparisons involving a quiet NaN always return False + # != comparisons involving a quiet NaN always return True + # == or != comparisons involving a signaling NaN signal + # InvalidOperation, and return False or True as above if the + # InvalidOperation is not trapped. # <, >, <= and >= comparisons involving a (quiet or signaling) # NaN signal InvalidOperation, and return False if the # InvalidOperation is not trapped. @@ -854,19 +857,19 @@ class Decimal(object): # This behavior is designed to conform as closely as possible to # that specified by IEEE 754. - def __eq__(self, other): + def __eq__(self, other, context=None): other = _convert_other(other, allow_float=True) if other is NotImplemented: return other - if self.is_nan() or other.is_nan(): + if self._check_nans(other, context): return False return self._cmp(other) == 0 - def __ne__(self, other): + def __ne__(self, other, context=None): other = _convert_other(other, allow_float=True) if other is NotImplemented: return other - if self.is_nan() or other.is_nan(): + if self._check_nans(other, context): return True return self._cmp(other) != 0 |