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-rw-r--r--Modules/mathmodule.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index bbbb4911568..033de0b2907 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -1233,6 +1233,23 @@ FUNC2(remainder, m_remainder,
"Return x - n*y where n*y is the closest integer multiple of y.\n"
"In the case where x is exactly halfway between two multiples of\n"
"y, the nearest even value of n is used. The result is always exact.")
+
+/*[clinic input]
+math.signbit
+
+ x: double
+ /
+
+Return True if the sign of x is negative and False otherwise.
+[clinic start generated code]*/
+
+static PyObject *
+math_signbit_impl(PyObject *module, double x)
+/*[clinic end generated code: output=20c5f20156a9b871 input=3d3493fbcb5bdb3e]*/
+{
+ return PyBool_FromLong(signbit(x));
+}
+
FUNC1D(sin, sin, 0,
"sin($module, x, /)\n--\n\n"
"Return the sine of x (measured in radians).",
@@ -3148,7 +3165,7 @@ static PyObject *
math_issubnormal_impl(PyObject *module, double x)
/*[clinic end generated code: output=4e76ac98ddcae761 input=9a20aba7107d0d95]*/
{
-#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L
+#if !defined(_MSC_VER) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L
return PyBool_FromLong(issubnormal(x));
#else
return PyBool_FromLong(isfinite(x) && x && !isnormal(x));
@@ -4199,6 +4216,7 @@ static PyMethodDef math_methods[] = {
MATH_POW_METHODDEF
MATH_RADIANS_METHODDEF
{"remainder", _PyCFunction_CAST(math_remainder), METH_FASTCALL, math_remainder_doc},
+ MATH_SIGNBIT_METHODDEF
{"sin", math_sin, METH_O, math_sin_doc},
{"sinh", math_sinh, METH_O, math_sinh_doc},
{"sqrt", math_sqrt, METH_O, math_sqrt_doc},