#1945: document Unicode functions backported from py3k branch.
diff --git a/Doc/c-api/long.rst b/Doc/c-api/long.rst
index b9920a9..11d2908 100644
--- a/Doc/c-api/long.rst
+++ b/Doc/c-api/long.rst
@@ -65,6 +65,22 @@
    .. versionadded:: 2.6
 
 
+.. cfunction:: PyObject* PyLong_FromSsize_t(Py_ssize_t v)
+
+   Return a new :ctype:`PyLongObject` object with a value of *v*, or *NULL*
+   on failure.
+
+   .. versionadded:: 2.6
+
+
+.. cfunction:: PyObject* PyLong_FromSize_t(size_t v)
+
+   Return a new :ctype:`PyLongObject` object with a value of *v*, or *NULL*
+   on failure.
+
+   .. versionadded:: 2.6
+
+
 .. cfunction:: PyObject* PyLong_FromLongLong(PY_LONG_LONG v)
 
    Return a new :ctype:`PyLongObject` object from a C :ctype:`long long`, or *NULL*
@@ -183,6 +199,18 @@
    raised.
 
 
+.. cfunction:: Py_ssize_t PyLong_AsSsize_t(PyObject *pylong)
+
+   .. index::
+      single: PY_SSIZE_T_MAX
+
+   Return a :ctype:`Py_ssize_t` representation of the contents of *pylong*.  If
+   *pylong* is greater than :const:`PY_SSIZE_T_MAX`, an :exc:`OverflowError` is
+   raised.
+
+   .. versionadded:: 2.6
+
+
 .. cfunction:: PY_LONG_LONG PyLong_AsLongLong(PyObject *pylong)
 
    .. index::