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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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Revert "Merge math_1_to_whatever() and math_1()" 
This reverts commit 47970e2.
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@skirpichev
skirpichev committed Feb 9, 2023
commit ee5e68929b9f94c4e5e5d7b0da43810b95d9a203
12 changes: 10 additions & 2 deletions Modules/mathmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -875,7 +875,9 @@ is_error(double x)
*/

static PyObject *
math_1(PyObject *arg, double (*func) (double), int can_overflow)
math_1_to_whatever(PyObject *arg, double (*func) (double),
PyObject *(*from_double_func) (double),
int can_overflow)
{
double x, r;
x = PyFloat_AsDouble(arg);
Expand All @@ -901,7 +903,7 @@ math_1(PyObject *arg, double (*func) (double), int can_overflow)
/* this branch unnecessary on most platforms */
return NULL;

return PyFloat_FromDouble(r);
return (*from_double_func)(r);
}

/* variant of math_1, to be used when the function being wrapped is known to
Expand Down Expand Up @@ -949,6 +951,12 @@ math_1a(PyObject *arg, double (*func) (double))
OverflowError.
*/

static PyObject *
math_1(PyObject *arg, double (*func) (double), int can_overflow)
{
return math_1_to_whatever(arg, func, PyFloat_FromDouble, can_overflow);
}

static PyObject *
math_2(PyObject *const *args, Py_ssize_t nargs,
double (*func) (double, double), const char *funcname)
Expand Down