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Patch #1725 by Mark Dickinson, fixes incorrect conversion of -1e1000

Browse source 
and adds errors for -0x.
This commit is contained in:
Guido van Rossum 2008-01-05 00:59:59 +00:00
parent 54966a5f94
commit 3b83549ea0
3 changed files with 65 additions and 22 deletions
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7
Lib/test/test_float.py
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@ -121,6 +121,13 @@ class IEEEFormatTestCase(unittest.TestCase):
self.assertEquals(pos_pos(), neg_pos())
self.assertEquals(pos_neg(), neg_neg())
if float.__getformat__("double").startswith("IEEE"):
def test_underflow_sign(self):
import math
# check that -1e-1000 gives -0.0, not 0.0
self.assertEquals(math.atan2(-1e-1000, -1), math.atan2(-0.0, -1))
self.assertEquals(math.atan2(float('-1e-1000'), -1),
math.atan2(-0.0, -1))
class ReprTestCase(unittest.TestCase):
def test_repr(self):