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Code Issues Projects Releases Packages Wiki Activity Actions 13

gh-135853: add math.signbit (#135877)

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Bénédikt Tran 2025-06-28 14:46:07 +02:00 • committed by GitHub
parent ff7b5d44a0
commit 42ccac2d7f
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6 changed files with 81 additions and 3 deletions
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18
Modules/mathmodule.c
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@ -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).",
@ -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},