bpo-33073: Rework int.as_integer_ratio() implementation (GH-9303)

* Simplify the C code.
* Simplify tests and make them more strict and robust.
* Add references in the documentation.

1 files changed, 1 insertions, 6 deletions

diff --git a/Objects/longobject.c b/Objects/longobject.c
index ae3a98cc79..6f7fe335d9 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -5280,13 +5280,8 @@ static PyObject *
 int_as_integer_ratio_impl(PyObject *self)
 /*[clinic end generated code: output=e60803ae1cc8621a input=55ce3058e15de393]*/
 {
-    PyObject *numerator;
     PyObject *ratio_tuple;
-
-    if (PyLong_CheckExact(self)) {
-        return PyTuple_Pack(2, self, _PyLong_One);
-    }
-    numerator = _PyLong_Copy((PyLongObject *) self);
+    PyObject *numerator = long_long(self);
     if (numerator == NULL) {
         return NULL;
     }