From 17bc860c2e6f26b324c23d5b259bfe2942138226 Mon Sep 17 00:00:00 2001
From: John Wellbelove <github@wellbelove.co.uk>
Date: Thu, 30 Apr 2020 12:42:01 +0100
Subject: [PATCH] Added constexpr in place of enum for C++11

---
 include/etl/sqrt.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/etl/sqrt.h b/include/etl/sqrt.h
index 9fda08bf..5702c5ae 100644
--- a/include/etl/sqrt.h
+++ b/include/etl/sqrt.h
@@ -49,11 +49,15 @@ namespace etl
                                       etl::constant<intmax_t, I - 1>,
                                       etl::sqrt<VALUE, I + 1> >::type type;
 
-    enum value_type
+#if ETL_CPP11_SUPPORTED
+    static constexpr size_t value = type::value;
+#else
+    enum
     {
       // Recursive definition.
       value = type::value
     };
+#endif
   };
 }