[atomic] Consistently order atomic<...> and atomic_ref<...> definitions:

keep compare_exchange and fetch_* operations together because the latter
are a particular form of compare_exchange operation.

Author: zygoloid

source/atomics.tex

@@ -1150,10 +1150,6 @@
     bool compare_exchange_strong(@\placeholder{integral}@&, @\placeholder{integral}@,
                                  memory_order = memory_order_seq_cst) const noexcept;
 
-    void wait(@\placeholdernc{integral}@, memory_order = memory_order::seq_cst) const noexcept;
-    void notify_one() noexcept;
-    void notify_all() noexcept;
-
     @\placeholdernc{integral}@ fetch_add(@\placeholdernc{integral}@,
                        memory_order = memory_order_seq_cst) const noexcept;
     @\placeholdernc{integral}@ fetch_sub(@\placeholdernc{integral}@,
@@ -1165,6 +1161,10 @@
     @\placeholdernc{integral}@ fetch_xor(@\placeholdernc{integral}@,
                        memory_order = memory_order_seq_cst) const noexcept;
 
+    void wait(@\placeholdernc{integral}@, memory_order = memory_order::seq_cst) const noexcept;
+    void notify_one() noexcept;
+    void notify_all() noexcept;
+
     @\placeholdernc{integral}@ operator++(int) const noexcept;
     @\placeholdernc{integral}@ operator--(int) const noexcept;
     @\placeholdernc{integral}@ operator++() const noexcept;
@@ -1281,15 +1281,15 @@
     bool compare_exchange_strong(@\placeholder{floating-point}@&, @\placeholdernc{floating-point}@,
                                  memory_order = memory_order_seq_cst) const noexcept;
 
-    void wait(@\placeholdernc{floating-point}@, memory_order = memory_order::seq_cst) const noexcept;
-    void notify_one() noexcept;
-    void notify_all() noexcept;
-
     @\placeholder{floating-point}@ fetch_add(@\placeholdernc{floating-point}@,
                              memory_order = memory_order_seq_cst) const noexcept;
     @\placeholder{floating-point}@ fetch_sub(@\placeholdernc{floating-point}@,
                              memory_order = memory_order_seq_cst) const noexcept;
 
+    void wait(@\placeholdernc{floating-point}@, memory_order = memory_order::seq_cst) const noexcept;
+    void notify_one() noexcept;
+    void notify_all() noexcept;
+
     @\placeholder{floating-point}@ operator+=(@\placeholder{floating-point}@) const noexcept;
     @\placeholder{floating-point}@ operator-=(@\placeholder{floating-point}@) const noexcept;
   };
@@ -1382,13 +1382,13 @@
     bool compare_exchange_strong(T*&, T*,
                                  memory_order = memory_order_seq_cst) const noexcept;
 
+    T* fetch_add(difference_type, memory_order = memory_order_seq_cst) const noexcept;
+    T* fetch_sub(difference_type, memory_order = memory_order_seq_cst) const noexcept;
+
     void wait(T*, memory_order = memory_order::seq_cst) const noexcept;
     void notify_one() noexcept;
     void notify_all() noexcept;
 
-    T* fetch_add(difference_type, memory_order = memory_order_seq_cst) const noexcept;
-    T* fetch_sub(difference_type, memory_order = memory_order_seq_cst) const noexcept;
-
     T* operator++(int) const noexcept;
     T* operator--(int) const noexcept;
     T* operator++() const noexcept;