10000 gh-123836: check zero signs in math_testcases.txt by skirpichev · Pull Request #123854 · python/cpython · GitHub
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gh-123836: check zero signs in math_testcases.txt #123854

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Merged
merged 2 commits into from
Sep 17, 2024
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gh-123836: check zero signs in math_testcases.txt #123854

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gh-123836: check zero signs in math_testcases.txt
skirpichev Sep 9, 2024
3a96aee
adress review: correct zero sign for sqrt tests to match math.h conve…
skirpichev Sep 17, 2024
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adress review: correct zero sign for sqrt tests to match math.h conve… 
…ntion
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@skirpichev
skirpichev committed Sep 17, 2024
commit 3a96aee0b16a29514da1bf7dd8bc395d34912222
13 changes: 7 additions & 6 deletions Lib/test/test_math.py
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Expand Up @@ -2056,12 +2056,6 @@ def test_testfile(self):
if id in SKIP_ON_TIGER:
continue

# Skip some sqrt tests. C99+ says for math.h's sqrt: If the
# argument is +∞ or ±0, it is returned, unmodified. On another
# hand, for csqrt: If z is ±0+0i, the result is +0+0i.
if id in ['sqrt0002', 'sqrt0003', 'sqrt1001', 'sqrt1023']:
continue

func = getattr(math, fn)

if 'invalid' in flags or 'divide-by-zero' in flags:
Expand All @@ -2076,6 +2070,13 @@ def test_testfile(self):
except OverflowError:
result = 'OverflowError'

# C99+ says for math.h's sqrt: If the argument is +∞ or ±0, it is
# returned, unmodified. On another hand, for csqrt: If z is ±0+0i,
# the result is +0+0i. Lets correct zero sign of er to follow
# first convention.
if id in ['sqrt0002', 'sqrt0003', 'sqrt1001', 'sqrt1023']:
er = math.copysign(er, ar)

# Default tolerances
ulp_tol, abs_tol = 5, 0.0

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