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Use a more robust infinity check in _Py_HashDouble.

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This fixes a test_decimal failure on FreeBSD 8.0.  (modf apparently
doesn't follow C99 Annex F on FreeBSD.)
This commit is contained in:
Mark Dickinson 2010-04-05 18:07:51 +00:00
parent 0c08009708
commit 5e0c2748fb
2 changed files with 12 additions and 3 deletions
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9
Lib/test/test_float.py
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@ -948,6 +948,15 @@ class InfNanTest(unittest.TestCase):
self.assertFalse(NAN.is_inf())
self.assertFalse((0.).is_inf())
def test_hash_inf(self):
# the actual values here should be regarded as an
# implementation detail, but they need to be
# identical to those used in the Decimal module.
self.assertEqual(hash(float('inf')), 314159)
self.assertEqual(hash(float('-inf')), -271828)
self.assertEqual(hash(float('nan')), 0)
fromHex = float.fromhex
toHex = float.hex
class HexFloatTestCase(unittest.TestCase):