New submission from STINNER Victor: Since the build 154, many tests fail on the AMD64 FreeBSD CURRENT Debug 3.x buildbot slave because of float rounding errors. Failing tests:
* test_cmath * test_float * test_json * test_marshal * test_math * test_statistics * test_strtod http://buildbot.python.org/all/builders/AMD64%20FreeBSD%20CURRENT%20Non-Debug%203.x/builds/154/steps/test/logs/stdio Problem: none of build 154 changes are related to floats * commit f9f87f0934ca570293ba7194bed3448a7f9bf39c * commit 947629916a5ecb1f6f6792e9b9234e084c5bf274 It looks more like a libc change of the FreeBSD CURRENT slave. Example of errors: ====================================================================== FAIL: test_specific_values (test.test_cmath.CMathTests) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/home/buildbot/python/3.x.koobs-freebsd-current.nondebug/build/Lib/test/test_cmath.py", line 420, in test_specific_values msg=error_message) File "/usr/home/buildbot/python/3.x.koobs-freebsd-current.nondebug/build/Lib/test/test_cmath.py", line 149, in rAssertAlmostEqual '{!r} and {!r} are not sufficiently close'.format(a, b)) AssertionError: acos0036: acos(complex(-1.0009999999999992, 0.0)) Expected: complex(3.141592653589793, -0.04471763360830684) Received: complex(3.141592653589793, -0.04471763360829195) Received value insufficiently close to expected value. ====================================================================== FAIL: test_floats (test.test_json.test_float.TestPyFloat) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/test_json/test_float.py", line 8, in test_floats self.assertEqual(float(self.dumps(num)), num) AssertionError: 1.9275814160560202e-50 != 1.9275814160560204e-50 FAIL: test_bigcomp (test.test_strtod.StrtodTests) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/home/buildbot/python/3.x.koobs-freebsd-current.nondebug/build/Lib/test/test_strtod.py", line 213, in test_bigcomp self.check_strtod(s) File "/usr/home/buildbot/python/3.x.koobs-freebsd-current.nondebug/build/Lib/test/test_strtod.py", line 104, in check_strtod "expected {}, got {}".format(s, expected, got)) AssertionError: '0x1.8265ea9f864bcp+579' != '0x1.8265ea9f864bdp+579' - 0x1.8265ea9f864bcp+579 ? ^ + 0x1.8265ea9f864bdp+579 ? ^ : Incorrectly rounded str->float conversion for 29865e170: expected 0x1.8265ea9f864bcp+579, got 0x1.8265ea9f864bdp+579 ---------- messages: 291901 nosy: haypo, koobs priority: normal severity: normal status: open title: Float rounding errors on AMD64 FreeBSD CURRENT Debug 3.x buildbot versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30104> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
