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Diffstat (limited to 'Lib/test/test_math.py')
| -rw-r--r-- | Lib/test/test_math.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py index 913a60bf9e0..d14336f8bac 100644 --- a/Lib/test/test_math.py +++ b/Lib/test/test_math.py @@ -1214,6 +1214,12 @@ class MathTests(unittest.TestCase): self.assertEqual(math.ldexp(NINF, n), NINF) self.assertTrue(math.isnan(math.ldexp(NAN, n))) + @requires_IEEE_754 + def testLdexp_denormal(self): + # Denormal output incorrectly rounded (truncated) + # on some Windows. + self.assertEqual(math.ldexp(6993274598585239, -1126), 1e-323) + def testLog(self): self.assertRaises(TypeError, math.log) self.assertRaises(TypeError, math.log, 1, 2, 3) |