document PyUnicode_CompareWithASCIIString
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 653ee6e..e274591 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -869,6 +869,12 @@
respectively.
+.. cfunction:: int PyUnicode_CompareWithASCIIString(PyObject *uni, char *string)
+
+ Compare a unicode object, *uni*, with *string* and return -1, 0, 1 for less
+ than, equal, and greater than, respectively.
+
+
.. cfunction:: int PyUnicode_RichCompare(PyObject *left, PyObject *right, int op)
Rich compare two unicode strings and return one of the following: