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

   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
  19 int 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 }