From 1c814c02d27387d35a60474fb67df003fdd5ba4b Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Tue, 7 Aug 2018 16:58:02 +1000
Subject: [PATCH] bitwise: prefer template SFINAE over param SFINAE

---
 bitwise.hpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/bitwise.hpp b/bitwise.hpp
index fc83809a..71a82eae 100644
--- a/bitwise.hpp
+++ b/bitwise.hpp
@@ -76,9 +76,14 @@ namespace cruft {
 
 
     ///////////////////////////////////////////////////////////////////////////
-    template <typename T>
+    template <
+        typename T,
+        typename = std::enable_if_t<
+            std::is_integral_v<T>
+        >
+    >
     constexpr T
-    popcount (std::enable_if_t<std::is_integral<T>::value,T> t)
+    popcount (T t)
     {
         return __builtin_popcount (t);
     }