diff options
| author | Mark Dickinson <mdickinson@enthought.com> | 2011-05-09 13:02:45 (GMT) |
|---|---|---|
| committer | Mark Dickinson <mdickinson@enthought.com> | 2011-05-09 13:02:45 (GMT) |
| commit | df77e3d4a07223ebfe049e66d4d8a8c0b4315e04 (patch) | |
| tree | b3f4c6aef2318442fde6ba0836bf78ec5c28e603 | |
| parent | 86e104a6ab8d81916a13b01ec892dd006a033359 (diff) | |
| download | cpython-df77e3d4a07223ebfe049e66d4d8a8c0b4315e04.zip cpython-df77e3d4a07223ebfe049e66d4d8a8c0b4315e04.tar.gz cpython-df77e3d4a07223ebfe049e66d4d8a8c0b4315e04.tar.bz2 | |
Issue #11188: In log2 tests, create powers of 2 using ldexp(1, n) instead of the less reliable 2.0**n.
| -rw-r--r-- | Lib/test/test_math.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py index 3b80bb6..81080f2 100644 --- a/Lib/test/test_math.py +++ b/Lib/test/test_math.py @@ -653,8 +653,8 @@ class MathTests(unittest.TestCase): def testLog2(self): self.assertRaises(TypeError, math.log2) # Check that we get exact equality for log2 of powers of 2. - actual = [math.log2(2.0**n) for n in range(-324, 1024)] - expected = [float(n) for n in range(-324, 1024)] + actual = [math.log2(math.ldexp(1.0, n)) for n in range(-1074, 1024)] + expected = [float(n) for n in range(-1074, 1024)] self.assertEqual(actual, expected) # Check some integer values |