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| author | Mark Dickinson <dickinsm@gmail.com> | 2010-06-13 10:50:29 (GMT) |
|---|---|---|
| committer | Mark Dickinson <dickinsm@gmail.com> | 2010-06-13 10:50:29 (GMT) |
| commit | e979ec8fbf873efc266e665ae946df30dea97f6e (patch) | |
| tree | b7874d842ee46fc829ea31fe335dd284fd42945d /Lib/test/test_math.py | |
| parent | 8842c356aa98869e3d80b10cad5d5aeee22d5569 (diff) | |
| download | cpython-e979ec8fbf873efc266e665ae946df30dea97f6e.zip cpython-e979ec8fbf873efc266e665ae946df30dea97f6e.tar.gz cpython-e979ec8fbf873efc266e665ae946df30dea97f6e.tar.bz2 | |
Issue #8986: erfc was raising OverflowError on Linux for arguments in
the (approximate) range (-27.3, 30.0), as a result of an escaped errno
value.
Diffstat (limited to 'Lib/test/test_math.py')
| -rw-r--r-- | Lib/test/test_math.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py index 36f6847..3049ef1 100644 --- a/Lib/test/test_math.py +++ b/Lib/test/test_math.py @@ -996,6 +996,15 @@ class MathTests(unittest.TestCase): accuracy_failure = acc_check(expected, got, rel_err = 5e-15, abs_err = 5e-15) + elif fn == 'erfc': + # erfc has less-than-ideal accuracy for large + # arguments (x ~ 25 or so), mainly due to the + # error involved in computing exp(-x*x). + # + # XXX Would be better to weaken this test only + # for large x, instead of for all x. + accuracy_failure = ulps_check(expected, got, 2000) + else: accuracy_failure = ulps_check(expected, got, 20) if accuracy_failure is None: |