Index members of type_order

Co-authored-by: A. Jiang <[email protected]>

Author: jwakely

source/support.tex

@@ -5739,12 +5739,12 @@
 \indexlibraryglobal{type_order}%
 \begin{itemdecl}
 template<class T, class U> struct type_order {
-  static constexpr strong_ordering value = @\exposid{TYPE-ORDER}@(T, U);
+  static constexpr strong_ordering @\libmember{value}{type_order}@ = @\exposid{TYPE-ORDER}@(T, U);
 
-  using value_type = strong_ordering;
+  using @\libmember{value_type}{type_order}@ = strong_ordering;
 
-  constexpr operator value_type() const noexcept { return value; }
-  constexpr value_type operator()() const noexcept { return value; }
+  constexpr @\libmember{operator value_type}{type_order}@() const noexcept { return value; }
+  constexpr value_type @\libmember{operator()}{type_order}@() const noexcept { return value; }
 };
 \end{itemdecl}