commit fbf9aab6e2453aa81a683af72ec2548adbbab1cd
author Arthur O'Dwyer <arthur.j.odwyer@gmail.com> Wed Jul 28 23:40:29 2021 -0400
committer Copybara-Service <copybara-worker@google.com> Sun Oct 10 19:00:53 2021 -0700
tree fe2a19f1382488a6c8a2994bd0b5143a091cad92
parent 2dee94f06d4850764d3cbb5e9e5d4c0afc60e092

[libc++] [P1614] Implement std::compare_three_way.

Differential Revision: https://reviews.llvm.org/D110735

NOKEYCHECK=True
GitOrigin-RevId: 3df094d31eac753687c7963738bb847e6d3794e9

include/compare

diff --git a/include/compare b/include/compare
index ca1f574..ddb8313 100644
--- a/include/compare
+++ b/include/compare
@@ -47,6 +47,9 @@
   template<class T, class U = T>
     using compare_three_way_result_t = typename compare_three_way_result<T, U>::type;
 
+  // [comparisons.three.way], class compare_three_way
+  struct compare_three_way; // C++20
+
   // [cmp.alg], comparison algorithms
   template<class T> constexpr strong_ordering strong_order(const T& a, const T& b);
   template<class T> constexpr weak_ordering weak_order(const T& a, const T& b);
@@ -133,6 +136,7 @@
 */
 
 #include <__compare/common_comparison_category.h>
+#include <__compare/compare_three_way.h>
 #include <__compare/compare_three_way_result.h>
 #include <__compare/is_eq.h>
 #include <__compare/ordering.h>