1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17
10
11// <functional>
12
13// Test that std::compare_three_way is defined in <functional>,
14// not only in <compare>.
15
16#include <functional>
17#include <cassert>
18
19int main(int, char**)
20{
21 assert(std::compare_three_way()(1, 2) < 0);
22 assert(std::compare_three_way()(1, 1) == 0);
23 assert(std::compare_three_way()(2, 1) > 0);
24
25 return 0;
26}
27

source code of libcxx/test/std/utilities/function.objects/comparisons/compare_three_way_functional.pass.cpp