10000 gh-123811: test that round() can return signed zero by skirpichev · Pull Request #123829 · python/cpython · GitHub
[go: up one dir, main page]

Skip to content

gh-123811: test that round() can return signed zero #123829

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 3 commits into from
Sep 11, 2024
Merged
Changes from 1 commit
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
redo on top of #121071
  • Loading branch information
skirpichev committed Sep 8, 2024
commit 42c378316b4e757ab78395d5bd9bd8493eb5bf25
24 changes: 1 addition & 23 deletions Lib/test/test_float.py
Original file line number Diff line number Diff line change
Expand Up @@ -863,29 +863,7 @@ def test_short_repr(self):
self.assertEqual(repr(float(negs)), str(float(negs)))

@support.requires_IEEE_754
class RoundTestCase(unittest.TestCase):

def assertFloatsAreIdentical(self, x, y):
"""Fail unless floats x and y are identical, in the sense that:
(1) both x and y are nans, or
(2) both x and y are infinities, with the same sign, or
(3) both x and y are zeros, with the same sign, or
(4) x and y are both finite and nonzero, and x == y
"""
msg = 'floats {!r} and {!r} are not identical'

if isnan(x) or isnan(y):
if isnan(x) and isnan(y):
return
elif x == y:
if x != 0.0:
return
# both zero; check that signs match
elif copysign(1.0, x) == copysign(1.0, y):
return
else:
msg += ': zeros have different signs'
self.fail(msg.format(x, y))
class RoundTestCase(unittest.TestCase, FloatsAreIdenticalMixin):

def test_inf_nan(self):
self.assertRaises(OverflowError, round, INF)
Expand Down
Loading
0