| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <functional> |
| |
| // less |
| |
| #include <functional> |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "pointer_comparison_test_helper.h" |
| |
| int main(int, char**) |
| { |
| typedef std::less<int> F; |
| const F f = F(); |
| static_assert((std::is_same<int, F::first_argument_type>::value), "" ); |
| static_assert((std::is_same<int, F::second_argument_type>::value), "" ); |
| static_assert((std::is_same<bool, F::result_type>::value), "" ); |
| assert(!f(36, 36)); |
| assert(!f(36, 6)); |
| assert(f(6, 36)); |
| { |
| // test total ordering of int* for less<int*> and less<void>. |
| do_pointer_comparison_test<int, std::less>(); |
| } |
| #if TEST_STD_VER > 11 |
| typedef std::less<> F2; |
| const F2 f2 = F2(); |
| assert(!f2(36, 36)); |
| assert(!f2(36, 6)); |
| assert( f2(6, 36)); |
| assert(!f2(36, 6.0)); |
| assert(!f2(36.0, 6)); |
| assert( f2(6, 36.0)); |
| assert( f2(6.0, 36)); |
| |
| constexpr bool foo = std::less<int> () (36, 36); |
| static_assert ( !foo, "" ); |
| |
| constexpr bool bar = std::less<> () (36.0, 36); |
| static_assert ( !bar, "" ); |
| #endif |
| |
| return 0; |
| } |