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| 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 | #ifndef _LIBCPP___CXX03___ALGORITHM_COMP_H |
| 10 | #define _LIBCPP___CXX03___ALGORITHM_COMP_H |
| 11 | |
| 12 | #include <__cxx03/__config> |
| 13 | #include <__cxx03/__type_traits/desugars_to.h> |
| 14 | |
| 15 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 16 | # pragma GCC system_header |
| 17 | #endif |
| 18 | |
| 19 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 20 | |
| 21 | struct __equal_to { |
| 22 | template <class _T1, class _T2> |
| 23 | _LIBCPP_HIDE_FROM_ABI bool operator()(const _T1& __x, const _T2& __y) const { |
| 24 | return __x == __y; |
| 25 | } |
| 26 | }; |
| 27 | |
| 28 | template <class _Tp, class _Up> |
| 29 | inline const bool __desugars_to_v<__equal_tag, __equal_to, _Tp, _Up> = true; |
| 30 | |
| 31 | // The definition is required because __less is part of the ABI, but it's empty |
| 32 | // because all comparisons should be transparent. |
| 33 | template <class _T1 = void, class _T2 = _T1> |
| 34 | struct __less {}; |
| 35 | |
| 36 | template <> |
| 37 | struct __less<void, void> { |
| 38 | template <class _Tp, class _Up> |
| 39 | _LIBCPP_HIDE_FROM_ABI bool operator()(const _Tp& __lhs, const _Up& __rhs) const { |
| 40 | return __lhs < __rhs; |
| 41 | } |
| 42 | }; |
| 43 | |
| 44 | template <class _Tp> |
| 45 | inline const bool __desugars_to_v<__less_tag, __less<>, _Tp, _Tp> = true; |
| 46 | |
| 47 | _LIBCPP_END_NAMESPACE_STD |
| 48 | |
| 49 | #endif // _LIBCPP___CXX03___ALGORITHM_COMP_H |
| 50 |
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