Function PyCFunction_Check

python3-sys/src/methodobject.rs:12–14

(op: *mut PyObject)

#[inline(always)]
pub unsafe fn PyCFunction_Check(op: *mut PyObject) -> c_int {
    (Py_TYPE(op) == &mut PyCFunction_Type) as c_int
}

pub type PyCFunction =
    unsafe extern "C" fn(slf: *mut PyObject, args: *mut PyObject) -> *mut PyObject;