forked from OSchip/llvm-project
164 lines
7.0 KiB
C++
164 lines
7.0 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_COMPARE
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#define _LIBCPP_COMPARE
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/*
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compare synopsis
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namespace std {
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// [cmp.categories], comparison category types
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class partial_ordering;
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class weak_ordering;
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class strong_ordering;
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// named comparison functions
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constexpr bool is_eq (partial_ordering cmp) noexcept { return cmp == 0; }
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constexpr bool is_neq (partial_ordering cmp) noexcept { return cmp != 0; }
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constexpr bool is_lt (partial_ordering cmp) noexcept { return cmp < 0; }
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constexpr bool is_lteq(partial_ordering cmp) noexcept { return cmp <= 0; }
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constexpr bool is_gt (partial_ordering cmp) noexcept { return cmp > 0; }
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constexpr bool is_gteq(partial_ordering cmp) noexcept { return cmp >= 0; }
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// [cmp.common], common comparison category type
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template<class... Ts>
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struct common_comparison_category {
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using type = see below;
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};
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template<class... Ts>
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using common_comparison_category_t = typename common_comparison_category<Ts...>::type;
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// [cmp.concept], concept three_way_comparable
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template<class T, class Cat = partial_ordering>
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concept three_way_comparable = see below;
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template<class T, class U, class Cat = partial_ordering>
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concept three_way_comparable_with = see below;
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// [cmp.result], result of three-way comparison
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template<class T, class U = T> struct compare_three_way_result;
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template<class T, class U = T>
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using compare_three_way_result_t = typename compare_three_way_result<T, U>::type;
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// [comparisons.three.way], class compare_three_way
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struct compare_three_way; // C++20
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// [cmp.alg], comparison algorithms
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inline namespace unspecified {
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inline constexpr unspecified strong_order = unspecified;
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inline constexpr unspecified weak_order = unspecified;
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inline constexpr unspecified partial_order = unspecified;
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inline constexpr unspecified compare_strong_order_fallback = unspecified;
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inline constexpr unspecified compare_weak_order_fallback = unspecified;
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inline constexpr unspecified compare_partial_order_fallback = unspecified;
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}
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// [cmp.partialord], Class partial_ordering
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class partial_ordering {
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public:
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// valid values
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static const partial_ordering less;
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static const partial_ordering equivalent;
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static const partial_ordering greater;
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static const partial_ordering unordered;
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// comparisons
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friend constexpr bool operator==(partial_ordering v, unspecified) noexcept;
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friend constexpr bool operator==(partial_ordering v, partial_ordering w) noexcept = default;
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friend constexpr bool operator< (partial_ordering v, unspecified) noexcept;
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friend constexpr bool operator> (partial_ordering v, unspecified) noexcept;
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friend constexpr bool operator<=(partial_ordering v, unspecified) noexcept;
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friend constexpr bool operator>=(partial_ordering v, unspecified) noexcept;
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friend constexpr bool operator< (unspecified, partial_ordering v) noexcept;
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friend constexpr bool operator> (unspecified, partial_ordering v) noexcept;
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friend constexpr bool operator<=(unspecified, partial_ordering v) noexcept;
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friend constexpr bool operator>=(unspecified, partial_ordering v) noexcept;
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friend constexpr partial_ordering operator<=>(partial_ordering v, unspecified) noexcept;
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friend constexpr partial_ordering operator<=>(unspecified, partial_ordering v) noexcept;
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};
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// [cmp.weakord], Class weak_ordering
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class weak_ordering {
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public:
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// valid values
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static const weak_ordering less;
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static const weak_ordering equivalent;
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static const weak_ordering greater;
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// conversions
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constexpr operator partial_ordering() const noexcept;
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// comparisons
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friend constexpr bool operator==(weak_ordering v, unspecified) noexcept;
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friend constexpr bool operator==(weak_ordering v, weak_ordering w) noexcept = default;
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friend constexpr bool operator< (weak_ordering v, unspecified) noexcept;
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friend constexpr bool operator> (weak_ordering v, unspecified) noexcept;
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friend constexpr bool operator<=(weak_ordering v, unspecified) noexcept;
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friend constexpr bool operator>=(weak_ordering v, unspecified) noexcept;
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friend constexpr bool operator< (unspecified, weak_ordering v) noexcept;
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friend constexpr bool operator> (unspecified, weak_ordering v) noexcept;
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friend constexpr bool operator<=(unspecified, weak_ordering v) noexcept;
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friend constexpr bool operator>=(unspecified, weak_ordering v) noexcept;
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friend constexpr weak_ordering operator<=>(weak_ordering v, unspecified) noexcept;
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friend constexpr weak_ordering operator<=>(unspecified, weak_ordering v) noexcept;
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};
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// [cmp.strongord], Class strong_ordering
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class strong_ordering {
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public:
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// valid values
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static const strong_ordering less;
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static const strong_ordering equal;
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static const strong_ordering equivalent;
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static const strong_ordering greater;
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// conversions
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constexpr operator partial_ordering() const noexcept;
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constexpr operator weak_ordering() const noexcept;
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// comparisons
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friend constexpr bool operator==(strong_ordering v, unspecified) noexcept;
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friend constexpr bool operator==(strong_ordering v, strong_ordering w) noexcept = default;
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friend constexpr bool operator< (strong_ordering v, unspecified) noexcept;
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friend constexpr bool operator> (strong_ordering v, unspecified) noexcept;
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friend constexpr bool operator<=(strong_ordering v, unspecified) noexcept;
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friend constexpr bool operator>=(strong_ordering v, unspecified) noexcept;
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friend constexpr bool operator< (unspecified, strong_ordering v) noexcept;
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friend constexpr bool operator> (unspecified, strong_ordering v) noexcept;
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friend constexpr bool operator<=(unspecified, strong_ordering v) noexcept;
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friend constexpr bool operator>=(unspecified, strong_ordering v) noexcept;
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friend constexpr strong_ordering operator<=>(strong_ordering v, unspecified) noexcept;
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friend constexpr strong_ordering operator<=>(unspecified, strong_ordering v) noexcept;
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};
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}
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*/
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#include <__assert> // all public C++ headers provide the assertion handler
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#include <__compare/common_comparison_category.h>
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#include <__compare/compare_partial_order_fallback.h>
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#include <__compare/compare_strong_order_fallback.h>
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#include <__compare/compare_three_way.h>
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#include <__compare/compare_three_way_result.h>
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#include <__compare/compare_weak_order_fallback.h>
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#include <__compare/is_eq.h>
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#include <__compare/ordering.h>
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#include <__compare/partial_order.h>
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#include <__compare/strong_order.h>
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#include <__compare/three_way_comparable.h>
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#include <__compare/weak_order.h>
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#include <__config>
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#include <version>
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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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#endif // _LIBCPP_COMPARE
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