Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Backport of r70459.
diff --git a/Include/longobject.h b/Include/longobject.h
index fa511a7..ea9e387 100644
--- a/Include/longobject.h
+++ b/Include/longobject.h
@@ -24,6 +24,7 @@
PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLong(PyObject *);
PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLongMask(PyObject *);
PyAPI_FUNC(Py_ssize_t) PyLong_AsSsize_t(PyObject *);
+PyAPI_FUNC(PyObject *) PyLong_GetInfo(void);
/* For use by intobject.c only */
#define _PyLong_AsSsize_t PyLong_AsSsize_t