107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___FUNCTIONAL_RANGES_OPERATIONS_H
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#define _LIBCPP___FUNCTIONAL_RANGES_OPERATIONS_H
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#include <__concepts/equality_comparable.h>
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#include <__concepts/totally_ordered.h>
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#include <__config>
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#include <__type_traits/integral_constant.h>
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#include <__type_traits/operation_traits.h>
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#include <__utility/forward.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20
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namespace ranges {
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struct equal_to {
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template <class _Tp, class _Up>
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requires equality_comparable_with<_Tp, _Up>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp&& __t, _Up&& __u) const
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noexcept(noexcept(bool(std::forward<_Tp>(__t) == std::forward<_Up>(__u)))) {
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return std::forward<_Tp>(__t) == std::forward<_Up>(__u);
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}
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using is_transparent = void;
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};
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struct not_equal_to {
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template <class _Tp, class _Up>
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requires equality_comparable_with<_Tp, _Up>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp&& __t, _Up&& __u) const
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noexcept(noexcept(bool(!(std::forward<_Tp>(__t) == std::forward<_Up>(__u))))) {
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return !(std::forward<_Tp>(__t) == std::forward<_Up>(__u));
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}
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using is_transparent = void;
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};
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struct less {
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template <class _Tp, class _Up>
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requires totally_ordered_with<_Tp, _Up>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp&& __t, _Up&& __u) const
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noexcept(noexcept(bool(std::forward<_Tp>(__t) < std::forward<_Up>(__u)))) {
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return std::forward<_Tp>(__t) < std::forward<_Up>(__u);
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}
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using is_transparent = void;
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};
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struct less_equal {
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template <class _Tp, class _Up>
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requires totally_ordered_with<_Tp, _Up>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp&& __t, _Up&& __u) const
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noexcept(noexcept(bool(!(std::forward<_Up>(__u) < std::forward<_Tp>(__t))))) {
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return !(std::forward<_Up>(__u) < std::forward<_Tp>(__t));
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}
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using is_transparent = void;
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};
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struct greater {
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template <class _Tp, class _Up>
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requires totally_ordered_with<_Tp, _Up>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp&& __t, _Up&& __u) const
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noexcept(noexcept(bool(std::forward<_Up>(__u) < std::forward<_Tp>(__t)))) {
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return std::forward<_Up>(__u) < std::forward<_Tp>(__t);
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}
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using is_transparent = void;
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};
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struct greater_equal {
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template <class _Tp, class _Up>
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requires totally_ordered_with<_Tp, _Up>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(_Tp&& __t, _Up&& __u) const
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noexcept(noexcept(bool(!(std::forward<_Tp>(__t) < std::forward<_Up>(__u))))) {
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return !(std::forward<_Tp>(__t) < std::forward<_Up>(__u));
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}
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using is_transparent = void;
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};
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} // namespace ranges
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// For ranges we do not require that the types on each side of the equality
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// operator are of the same type
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template <class _Tp, class _Up>
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struct __desugars_to<__equal_tag, ranges::equal_to, _Tp, _Up> : true_type {};
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___FUNCTIONAL_RANGES_OPERATIONS_H
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