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gh-156693: correct complex powers with infinite bases #156694

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42391fe
gh-156693: correct complex powers with infinite bases
skirpichev Aug 31, 2026
c93746a
Drop unused _Py_ADJUST_ERANGE2 macro
skirpichev Aug 31, 2026
9ce4cc8
Apply suggestion from @eendebakpt
skirpichev Sep 1, 2026
f7b9417
Merge branch 'master' into fix-cpow-overflows/156693
skirpichev Sep 1, 2026
3c4878c
address review: add c_quot
skirpichev Sep 1, 2026
eb7bdf7
address review: inline new helpers
skirpichev Sep 1, 2026
af33ff4
Update Misc/NEWS.d/next/Core_and_Builtins/2026-08-31-07-33-05.gh-issu…
skirpichev Sep 1, 2026
256a454
Merge branch 'master' into fix-cpow-overflows/156693
skirpichev Sep 1, 2026
ee0a74f
address review: correct zero division case and add inf**1j test
skirpichev Sep 2, 2026
935b0e6
optional: drop corner cases (should be handled by floating-point arit…
skirpichev Sep 2, 2026
fec072f
Revert "optional: drop corner cases (should be handled by floating-po…
skirpichev Sep 3, 2026
adde55b
Merge branch 'master' into fix-cpow-overflows/156693
skirpichev Sep 3, 2026
ad845c1
keep only basic fix
skirpichev Sep 3, 2026
ee01d1f
+ fix test
skirpichev Sep 3, 2026
aa85e0b
+ few more tests
skirpichev Sep 3, 2026
27bca7f
+ more cases for _Py_c_iszero
skirpichev Sep 3, 2026
8da530c
+ correct news
skirpichev Sep 3, 2026
ae4c396
+ restore _Py_ADJUST_ERANGE2
skirpichev Sep 3, 2026
5b9607d
drop flacky test
skirpichev Sep 3, 2026
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+ few more tests
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@skirpichev
skirpichev committed Sep 3, 2026
commit aa85e0bfc2d3faf45a70574666512d5eb49493bb
1 change: 1 addition & 0 deletions Lib/test/test_capi/test_complex.py
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Expand Up @@ -263,6 +263,7 @@ def test_py_c_pow(self):
self.assertEqual(_py_c_pow(1, 1j), (1+0j, 0))
self.assertEqual(_py_c_pow(0j, 1), (0j, 0))
self.assertAlmostEqual(_py_c_pow(1j, 2)[0], -1.0+0j)
self.assertEqual(_py_c_pow(complex('nan+0j'), 0j)[0], 1+0j)

r, e = _py_c_pow(1+1j, -1)
self.assertAlmostEqual(r, 0.5-0.5j)
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1 change: 1 addition & 0 deletions Lib/test/test_complex.py
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Expand Up @@ -351,6 +351,7 @@ def test_pow(self):
self.assertEqual(pow(0+0j, 2000+0j), 0.0)
self.assertEqual(pow(0, 0+0j), 1.0)
self.assertEqual(pow(-1, 0+0j), 1.0)
self.assertEqual(pow(0j, complex(INF)), 0j)
self.assertRaises(ZeroDivisionError, pow, 0+0j, 1j)
self.assertRaises(ZeroDivisionError, pow, 0+0j, -1000)
self.assertRaises(ZeroDivisionError, pow, 0+0j, -1)
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