8000 gh-101678: refactor the math module to use special functions from c11 by skirpichev · Pull Request #101679 · python/cpython · GitHub
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gh-101678: refactor the math module to use special functions from c11 #101679

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Merged
merged 13 commits into from
Feb 9, 2023
Merged

gh-101678: refactor the math module to use special functions from c11 #101679

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d202b5c
gh-101678: refactor the math module to use special functions from c11
skirpichev Feb 8, 2023
7d14105
Use libc's lgamma/tgamma instead of custom implementations
skirpichev Feb 8, 2023
468096b
Revert "Use libc's lgamma/tgamma instead of custom implementations"
skirpichev Feb 8, 2023
5b75ef8
Comment on custom implementations of tgamma/lgamma
skirpichev Feb 8, 2023
538810d
UPD commit msg: gh-101678: refactor the math module to use erf/erfc/l…
skirpichev Feb 8, 2023
fa76552
Grammar fix
skirpichev Feb 9, 2023
42829cb
Restore braces in m_log2 per PEP7
skirpichev Feb 9, 2023
27334d8
Merge branch 'main' into math-c11
skirpichev Feb 9, 2023
c097545
Merge branch 'main' into math-c11
skirpichev Feb 9, 2023
47970e2
Merge math_1_to_whatever() and math_1()
skirpichev Feb 9, 2023
bebbc79
Provide context for log1p workaround
skirpichev Feb 9, 2023
ee5e689
Revert "Merge math_1_to_whatever() and math_1()"
skirpichev Feb 9, 2023
06e9c8c
Fix issues prefixes
skirpichev Feb 9, 2023
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Comment on custom implementations of tgamma/lgamma
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@skirpichev
skirpichev committed Feb 8, 2023
commit 5b75ef88c3d6788ef76ab8ca895de964c80d02f1
4 changes: 3 additions & 1 deletion Modules/mathmodule.c
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Expand Up @@ -158,7 +158,9 @@ m_sinpi(double x)
return copysign(1.0, x)*r;
}

/* Implementation of the real gamma function. In extensive but non-exhaustive
/* Implementation of the real gamma function. Kept here to workaround
issues (see e.g. #70309) with quality of libm's tgamma/lgamma implementations
on various platforms (Windows, MacOS). In extensive but non-exhaustive
random tests, this function proved accurate to within <= 10 ulps across the
entire float domain. Note that accuracy may depend on the quality of the
system math functions, the pow function in particular. Special cases
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