From 23616de771e722394e65fbac71a297a6b1ace214 Mon Sep 17 00:00:00 2001
From: Grigori Goronzy <greg@kinoho.net>
Date: Sat, 30 Nov 2019 12:42:26 +0100
Subject: [PATCH] Add NO_STL std::reverse implementation (#174)

Follows the example implementation on [1].

[1] https://en.cppreference.com/w/cpp/algorithm/reverse
---
 include/etl/stl/alternate/algorithm.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/etl/stl/alternate/algorithm.h b/include/etl/stl/alternate/algorithm.h
index 9dc16b66..57f67402 100644
--- a/include/etl/stl/alternate/algorithm.h
+++ b/include/etl/stl/alternate/algorithm.h
@@ -156,6 +156,17 @@ namespace ETLSTD
     return de;
   }
 
+  //***************************************************************************
+  // reverse
+  template<typename TIterator>
+  void reverse(TIterator first, TIterator last)
+  {
+    while ((first != last) && (first != --last))
+    {
+      ETLSTD::swap(*first++, *last);
+    }
+  }
+
   //***************************************************************************
   // move
   template <typename TIterator1, typename TIterator2>