[libc++] Implement P0919R3: heterogenous lookup for unordered containers
Implement heterogenous lookup for unordered containers, including the
refinement from P1690R1.
Differential Revision: https://reviews.llvm.org/D87171
GitOrigin-RevId: e5ec94a1a083e055ac2686ecc72fb4868dd7ce85
diff --git a/docs/FeatureTestMacroTable.rst b/docs/FeatureTestMacroTable.rst
index 0f17a3a..8d7bfd4 100644
--- a/docs/FeatureTestMacroTable.rst
+++ b/docs/FeatureTestMacroTable.rst
@@ -206,7 +206,7 @@
------------------------------------------------- -----------------
``__cpp_lib_erase_if`` ``202002L``
------------------------------------------------- -----------------
- ``__cpp_lib_generic_unordered_lookup`` *unimplemented*
+ ``__cpp_lib_generic_unordered_lookup`` ``201811L``
------------------------------------------------- -----------------
``__cpp_lib_interpolate`` ``201902L``
------------------------------------------------- -----------------