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GeezerVison is showing github.com — gh-138573: restrict testAtan2() the IEC 60559-compatible platforms by skirpichev · Pull Request #138812 · python/cpython

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@skirpichev

@skirpichev skirpichev commented Sep 12, 2025 •
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Section 7.12.4.4 of the C17 doesn't specify special values for atan2() (and in particular permit domain error when both arguments are zero). The F.10.1.4 does.

  • Issue: test.test_math.MathTests.testAtan2 failure on OpenIndiana/Solaris #138573

📚 Documentation preview 📚: https://cpython-previews--138812.org.readthedocs.build/

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skirpichev added 6 commits September 12, 2025 07:30
@skirpichev
pythongh-138580: add sys.float_info.stdc_iec_559 boolean flag
cffad22 
This value indicating support the IEC 60559 floating-point standard (the
Annex F of C99).  If enabled, the float type characteristics matches the
IEC 60559 double format and exceptional cases for the math's functions
follow to the section F.10 of the C99 standard.
@skirpichev
+1
d81b486
@skirpichev
+ update math docs
f9fa06b
@skirpichev
Merge branch 'master' into annex-f-flag/138580
3e33100
@skirpichev
+ adjust test
942ac08
@skirpichev
pythongh-138573: restrict testAtan2() the IEC 60559-compatible platforms
e5b8642 
Section 7.12.4.4 of the C17 doesn't specify special values
for atan2() (and in particular permit domain error when
both arguments are zero).  The F.10.1.4 does.
@skirpichev skirpichev added tests Tests in the Lib/test dir skip news labels Sep 12, 2025
@bedevere-app bedevere-app Bot mentioned this pull request Sep 12, 2025
test.test_math.MathTests.testAtan2 failure on OpenIndiana/Solaris #138573
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@skirpichev

skirpichev commented Sep 12, 2025

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This is on top of #138811 (hence a draft).
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@skirpichev skirpichev closed this Oct 10, 2025
@skirpichev
skirpichev deleted the restrict-atan2-tests/138573 branch October 10, 2025 04:21
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skip news tests Tests in the Lib/test dir

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@skirpichev
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