[libcxx-commits] [libcxx] [libc++][docs] Document _LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION (PR #115405)

[Alona Enraght-Moony via libcxx-commits]

https://github.com/aDotInTheVoid created https://github.com/llvm/llvm-project/pull/115405

This was added in 681cde7dd8b5613dbafc9ca54e0288477f946be3, but isn't currently documented.

>From 18ff69641b234d0325f05787db551968ea899a5c Mon Sep 17 00:00:00 2001
From: Alona Enraght-Moony <code at alona.page>
Date: Fri, 8 Nov 2024 01:02:57 +0000
Subject: [PATCH] [libc++][docs] Document
 _LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION

---
 libcxx/docs/UserDocumentation.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libcxx/docs/UserDocumentation.rst b/libcxx/docs/UserDocumentation.rst
index 1db437ce58b95e..2c1bc1373659c3 100644
--- a/libcxx/docs/UserDocumentation.rst
+++ b/libcxx/docs/UserDocumentation.rst
@@ -156,6 +156,9 @@ C++17 Specific Configuration Macros
 **_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE**:
   This macro is used to re-enable the `random_shuffle` algorithm.
 
+**_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION**:
+  This macro is used to re-enable `unary_function` and `binary_function`.
+
 **_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS**:
   This macro is used to re-enable `set_unexpected`, `get_unexpected`, and
   `unexpected`.