byteswap : 宣言に名前空間を追加

faithandbrave · faithandbrave · commit 418b2a9acd0e · 2021-10-28T19:08:27.000+09:00
diff --git a/reference/bit/byteswap.md b/reference/bit/byteswap.md
@@ -5,8 +5,10 @@
 * cpp23[meta cpp]
 
 ```cpp
-template <class T>
-constexpr T byteswap (T value) noexcept;
+namespace std {
+  template <class T>
+  constexpr T byteswap(T value) noexcept;
+}
 ```
 
 ## 概要
