Remove libc++ and libc++abi 8.0.0 now that we switched to version 10.0.1

in the gnu/ directory.

1 files changed, 0 insertions, 679 deletions

diff --git a/lib/libcxx/include/compare b/lib/libcxx/include/compare
deleted file mode 100644
index 07f88f09cb3..00000000000
--- a/lib/libcxx/include/compare
+++ /dev/null
@@ -1,679 +0,0 @@
-// -*- C++ -*-
-//===-------------------------- compare -----------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_COMPARE
-#define _LIBCPP_COMPARE
-
-/*
-    compare synopsis
-
-namespace std {
-  // [cmp.categories], comparison category types
-  class weak_equality;
-  class strong_equality;
-  class partial_ordering;
-  class weak_ordering;
-  class strong_ordering;
-
-  // named comparison functions
-  constexpr bool is_eq  (weak_equality cmp) noexcept    { return cmp == 0; }
-  constexpr bool is_neq (weak_equality cmp) noexcept    { return cmp != 0; }
-  constexpr bool is_lt  (partial_ordering cmp) noexcept { return cmp < 0; }
-  constexpr bool is_lteq(partial_ordering cmp) noexcept { return cmp <= 0; }
-  constexpr bool is_gt  (partial_ordering cmp) noexcept { return cmp > 0; }
-  constexpr bool is_gteq(partial_ordering cmp) noexcept { return cmp >= 0; }
-
-  // [cmp.common], common comparison category type
-  template<class... Ts>
-  struct common_comparison_category {
-    using type = see below;
-  };
-  template<class... Ts>
-    using common_comparison_category_t = typename common_comparison_category<Ts...>::type;
-
-  // [cmp.alg], comparison algorithms
-  template<class T> constexpr strong_ordering strong_order(const T& a, const T& b);
-  template<class T> constexpr weak_ordering weak_order(const T& a, const T& b);
-  template<class T> constexpr partial_ordering partial_order(const T& a, const T& b);
-  template<class T> constexpr strong_equality strong_equal(const T& a, const T& b);
-  template<class T> constexpr weak_equality weak_equal(const T& a, const T& b);
-}
-*/
-
-#include <__config>
-#include <type_traits>
-#include <array>
-
-#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
-#pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-#if _LIBCPP_STD_VER > 17
-
-// exposition only
-enum class _LIBCPP_ENUM_VIS _EqResult : unsigned char {
-  __zero = 0,
-  __equal = __zero,
-  __equiv = __equal,
-  __nonequal = 1,
-  __nonequiv = __nonequal
-};
-
-enum class _LIBCPP_ENUM_VIS _OrdResult : signed char {
-  __less = -1,
-  __greater = 1
-};
-
-enum class _LIBCPP_ENUM_VIS _NCmpResult : signed char {
-  __unordered = -127
-};
-
-struct _CmpUnspecifiedType;
-using _CmpUnspecifiedParam = void (_CmpUnspecifiedType::*)();
-
-class  weak_equality {
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr explicit weak_equality(_EqResult __val) noexcept : __value_(__val) {}
-
-public:
-  static const weak_equality equivalent;
-  static const weak_equality nonequivalent;
-
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(weak_equality __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(_CmpUnspecifiedParam, weak_equality __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(weak_equality __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(_CmpUnspecifiedParam, weak_equality __v) noexcept;
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-  _LIBCPP_INLINE_VISIBILITY friend constexpr weak_equality operator<=>(weak_equality __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr weak_equality operator<=>(_CmpUnspecifiedParam, weak_equality __v) noexcept;
-#endif
-
-private:
-  _EqResult __value_;
-};
-
-_LIBCPP_INLINE_VAR constexpr weak_equality weak_equality::equivalent(_EqResult::__equiv);
-_LIBCPP_INLINE_VAR constexpr weak_equality weak_equality::nonequivalent(_EqResult::__nonequiv);
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr bool operator==(weak_equality __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ == _EqResult::__zero;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr bool operator==(_CmpUnspecifiedParam, weak_equality __v) noexcept {
-  return __v.__value_ == _EqResult::__zero;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr bool operator!=(weak_equality __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ != _EqResult::__zero;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr bool operator!=(_CmpUnspecifiedParam, weak_equality __v) noexcept {
-  return __v.__value_ != _EqResult::__zero;
-}
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr weak_equality operator<=>(weak_equality __v, _CmpUnspecifiedParam) noexcept {
-  return __v;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr weak_equality operator<=>(_CmpUnspecifiedParam, weak_equality __v) noexcept {
-  return __v;
-}
-#endif
-
-class strong_equality {
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr strong_equality(_EqResult __val) noexcept : __value_(__val) {}
-
-public:
-  static const strong_equality equal;
-  static const strong_equality nonequal;
-  static const strong_equality equivalent;
-  static const strong_equality nonequivalent;
-
-  // conversion
-  _LIBCPP_INLINE_VISIBILITY constexpr operator weak_equality() const noexcept {
-    return __value_ == _EqResult::__zero ? weak_equality::equivalent
-          : weak_equality::nonequivalent;
-  }
-
-  // comparisons
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(strong_equality __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(strong_equality __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(_CmpUnspecifiedParam, strong_equality __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(_CmpUnspecifiedParam, strong_equality __v) noexcept;
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-  _LIBCPP_INLINE_VISIBILITY friend constexpr strong_equality operator<=>(strong_equality __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr strong_equality operator<=>(_CmpUnspecifiedParam, strong_equality __v) noexcept;
-#endif
-private:
-  _EqResult __value_;
-};
-
-_LIBCPP_INLINE_VAR constexpr strong_equality strong_equality::equal(_EqResult::__equal);
-_LIBCPP_INLINE_VAR constexpr strong_equality strong_equality::nonequal(_EqResult::__nonequal);
-_LIBCPP_INLINE_VAR constexpr strong_equality strong_equality::equivalent(_EqResult::__equiv);
-_LIBCPP_INLINE_VAR constexpr strong_equality strong_equality::nonequivalent(_EqResult::__nonequiv);
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(strong_equality __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ == _EqResult::__zero;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(_CmpUnspecifiedParam, strong_equality __v) noexcept {
-  return __v.__value_ == _EqResult::__zero;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(strong_equality __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ != _EqResult::__zero;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(_CmpUnspecifiedParam, strong_equality __v) noexcept {
-  return __v.__value_ != _EqResult::__zero;
-}
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-_LIBCPP_INLINE_VISIBILITY
-constexpr strong_equality operator<=>(strong_equality __v, _CmpUnspecifiedParam) noexcept {
-  return __v;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr strong_equality operator<=>(_CmpUnspecifiedParam, strong_equality __v) noexcept {
-  return __v;
-}
-#endif // _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-
-class partial_ordering {
-  using _ValueT = signed char;
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr partial_ordering(_EqResult __v) noexcept
-      : __value_(_ValueT(__v)) {}
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr partial_ordering(_OrdResult __v) noexcept
-      : __value_(_ValueT(__v)) {}
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr partial_ordering(_NCmpResult __v) noexcept
-      : __value_(_ValueT(__v)) {}
-
-  constexpr bool __is_ordered() const noexcept {
-    return __value_ != _ValueT(_NCmpResult::__unordered);
-  }
-public:
-  // valid values
-  static const partial_ordering less;
-  static const partial_ordering equivalent;
-  static const partial_ordering greater;
-  static const partial_ordering unordered;
-
-  // conversion
-  constexpr operator weak_equality() const noexcept {
-    return __value_ == 0 ? weak_equality::equivalent : weak_equality::nonequivalent;
-  }
-
-  // comparisons
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator< (partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator<=(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator> (partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator>=(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator< (_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator<=(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator> (_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator>=(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-  _LIBCPP_INLINE_VISIBILITY friend constexpr partial_ordering operator<=>(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr partial_ordering operator<=>(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
-#endif
-
-private:
-  _ValueT __value_;
-};
-
-_LIBCPP_INLINE_VAR constexpr partial_ordering partial_ordering::less(_OrdResult::__less);
-_LIBCPP_INLINE_VAR constexpr partial_ordering partial_ordering::equivalent(_EqResult::__equiv);
-_LIBCPP_INLINE_VAR constexpr partial_ordering partial_ordering::greater(_OrdResult::__greater);
-_LIBCPP_INLINE_VAR constexpr partial_ordering partial_ordering::unordered(_NCmpResult ::__unordered);
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__is_ordered() && __v.__value_ == 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator< (partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__is_ordered() && __v.__value_ < 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator<=(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__is_ordered() && __v.__value_ <= 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator> (partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__is_ordered() && __v.__value_ > 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator>=(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__is_ordered() && __v.__value_ >= 0;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return __v.__is_ordered() && 0 == __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator< (_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return __v.__is_ordered() && 0 < __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator<=(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return __v.__is_ordered() && 0 <= __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator> (_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return __v.__is_ordered() && 0 > __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator>=(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return __v.__is_ordered() && 0 >= __v.__value_;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return !__v.__is_ordered() || __v.__value_ != 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return !__v.__is_ordered() || __v.__value_ != 0;
-}
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-_LIBCPP_INLINE_VISIBILITY
-constexpr partial_ordering operator<=>(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr partial_ordering operator<=>(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
-  return __v < 0 ? partial_ordering::greater : (__v > 0 ? partial_ordering::less : __v);
-}
-#endif // _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-
-class weak_ordering {
-  using _ValueT = signed char;
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr weak_ordering(_EqResult __v) noexcept : __value_(_ValueT(__v)) {}
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr weak_ordering(_OrdResult __v) noexcept : __value_(_ValueT(__v)) {}
-
-public:
-  static const weak_ordering less;
-  static const weak_ordering equivalent;
-  static const weak_ordering greater;
-
-  // conversions
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr operator weak_equality() const noexcept {
-    return __value_ == 0 ? weak_equality::equivalent
-                         : weak_equality::nonequivalent;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr operator partial_ordering() const noexcept {
-    return __value_ == 0 ? partial_ordering::equivalent
-        : (__value_ < 0 ? partial_ordering::less : partial_ordering::greater);
-  }
-
-  // comparisons
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator< (weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator<=(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator> (weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator>=(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator< (_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator<=(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator> (_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator>=(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-  _LIBCPP_INLINE_VISIBILITY friend constexpr weak_ordering operator<=>(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr weak_ordering operator<=>(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
-#endif
-
-private:
-  _ValueT __value_;
-};
-
-_LIBCPP_INLINE_VAR constexpr weak_ordering weak_ordering::less(_OrdResult::__less);
-_LIBCPP_INLINE_VAR constexpr weak_ordering weak_ordering::equivalent(_EqResult::__equiv);
-_LIBCPP_INLINE_VAR constexpr weak_ordering weak_ordering::greater(_OrdResult::__greater);
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ == 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ != 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator< (weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ < 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator<=(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ <= 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator> (weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ > 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator>=(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ >= 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return 0 == __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return 0 != __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator< (_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return 0 < __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator<=(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return 0 <= __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator> (_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return 0 > __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator>=(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return 0 >= __v.__value_;
-}
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-_LIBCPP_INLINE_VISIBILITY
-constexpr weak_ordering operator<=>(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr weak_ordering operator<=>(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
-  return __v < 0 ? weak_ordering::greater : (__v > 0 ? weak_ordering::less : __v);
-}
-#endif // _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-
-class strong_ordering {
-  using _ValueT = signed char;
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr strong_ordering(_EqResult __v) noexcept : __value_(_ValueT(__v)) {}
-  _LIBCPP_INLINE_VISIBILITY
-  explicit constexpr strong_ordering(_OrdResult __v) noexcept : __value_(_ValueT(__v)) {}
-
-public:
-  static const strong_ordering less;
-  static const strong_ordering equal;
-  static const strong_ordering equivalent;
-  static const strong_ordering greater;
-
-  // conversions
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr operator weak_equality() const noexcept {
-    return __value_ == 0 ? weak_equality::equivalent
-                         : weak_equality::nonequivalent;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr operator strong_equality() const noexcept {
-    return __value_ == 0 ? strong_equality::equal
-                         : strong_equality::nonequal;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr operator partial_ordering() const noexcept {
-    return __value_ == 0 ? partial_ordering::equivalent
-        : (__value_ < 0 ? partial_ordering::less : partial_ordering::greater);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  constexpr operator weak_ordering() const noexcept {
-    return __value_ == 0 ? weak_ordering::equivalent
-        : (__value_ < 0 ? weak_ordering::less : weak_ordering::greater);
-  }
-
-  // comparisons
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator< (strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator<=(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator> (strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator>=(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator==(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator!=(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator< (_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator<=(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator> (_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr bool operator>=(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-  _LIBCPP_INLINE_VISIBILITY friend constexpr strong_ordering operator<=>(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
-  _LIBCPP_INLINE_VISIBILITY friend constexpr strong_ordering operator<=>(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
-#endif
-
-private:
-  _ValueT __value_;
-};
-
-_LIBCPP_INLINE_VAR constexpr strong_ordering strong_ordering::less(_OrdResult::__less);
-_LIBCPP_INLINE_VAR constexpr strong_ordering strong_ordering::equal(_EqResult::__equal);
-_LIBCPP_INLINE_VAR constexpr strong_ordering strong_ordering::equivalent(_EqResult::__equiv);
-_LIBCPP_INLINE_VAR constexpr strong_ordering strong_ordering::greater(_OrdResult::__greater);
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ == 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ != 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator< (strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ < 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator<=(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ <= 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator> (strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ > 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator>=(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v.__value_ >= 0;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator==(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return 0 == __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator!=(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return 0 != __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator< (_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return 0 < __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator<=(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return 0 <= __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator> (_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return 0 > __v.__value_;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool operator>=(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return 0 >= __v.__value_;
-}
-
-#ifndef _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-_LIBCPP_INLINE_VISIBILITY
-constexpr strong_ordering operator<=>(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
-  return __v;
-}
-_LIBCPP_INLINE_VISIBILITY
-constexpr strong_ordering operator<=>(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
-  return __v < 0 ? strong_ordering::greater : (__v > 0 ? strong_ordering::less : __v);
-}
-#endif // _LIBCPP_HAS_NO_SPACESHIP_OPERATOR
-
-// named comparison functions
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool is_eq(weak_equality __cmp) noexcept    { return __cmp == 0; }
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool is_neq(weak_equality __cmp) noexcept    { return __cmp != 0; }
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool is_lt(partial_ordering __cmp) noexcept { return __cmp < 0; }
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool is_lteq(partial_ordering __cmp) noexcept { return __cmp <= 0; }
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool is_gt(partial_ordering __cmp) noexcept { return __cmp > 0; }
-
-_LIBCPP_INLINE_VISIBILITY
-constexpr bool is_gteq(partial_ordering __cmp) noexcept { return __cmp >= 0; }
-
-namespace __comp_detail {
-
-enum _ClassifyCompCategory : unsigned{
-  _None,
-  _WeakEq,
-  _StrongEq,
-  _PartialOrd,
-  _WeakOrd,
-  _StrongOrd,
-  _CCC_Size
-};
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-constexpr _ClassifyCompCategory __type_to_enum() noexcept {
-  if (is_same_v<_Tp, weak_equality>)
-    return _WeakEq;
-  if (is_same_v<_Tp, strong_equality>)
-    return _StrongEq;
-  if (is_same_v<_Tp, partial_ordering>)
-    return _PartialOrd;
-  if (is_same_v<_Tp, weak_ordering>)
-    return _WeakOrd;
-  if (is_same_v<_Tp, strong_ordering>)
-    return _StrongOrd;
-  return _None;
-}
-
-template <size_t _Size>
-constexpr _ClassifyCompCategory
-__compute_comp_type(std::array<_ClassifyCompCategory, _Size> __types) {
-  std::array<int, _CCC_Size> __seen = {};
-  for (auto __type : __types)
-    ++__seen[__type];
-  if (__seen[_None])
-    return _None;
-  if (__seen[_WeakEq])
-    return _WeakEq;
-  if (__seen[_StrongEq] && (__seen[_PartialOrd] || __seen[_WeakOrd]))
-    return _WeakEq;
-  if (__seen[_StrongEq])
-    return _StrongEq;
-  if (__seen[_PartialOrd])
-    return _PartialOrd;
-  if (__seen[_WeakOrd])
-    return _WeakOrd;
-  return _StrongOrd;
-}
-
-template <class ..._Ts>
-constexpr auto __get_comp_type() {
-  using _CCC = _ClassifyCompCategory;
-  constexpr array<_CCC, sizeof...(_Ts)> __type_kinds{{__comp_detail::__type_to_enum<_Ts>()...}};
-  constexpr _CCC _Cat = sizeof...(_Ts) == 0 ? _StrongOrd
-      : __compute_comp_type(__type_kinds);
-  if constexpr (_Cat == _None)
-    return void();
-  else if constexpr (_Cat == _WeakEq)
-    return weak_equality::equivalent;
-  else if constexpr (_Cat == _StrongEq)
-    return strong_equality::equivalent;
-  else if constexpr (_Cat == _PartialOrd)
-    return partial_ordering::equivalent;
-  else if constexpr (_Cat == _WeakOrd)
-    return weak_ordering::equivalent;
-  else if constexpr (_Cat == _StrongOrd)
-    return strong_ordering::equivalent;
-  else
-    static_assert(_Cat != _Cat, "unhandled case");
-}
-} // namespace __comp_detail
-
-// [cmp.common], common comparison category type
-template<class... _Ts>
-struct _LIBCPP_TEMPLATE_VIS common_comparison_category {
-  using type = decltype(__comp_detail::__get_comp_type<_Ts...>());
-};
-
-template<class... _Ts>
-using common_comparison_category_t = typename common_comparison_category<_Ts...>::type;
-
-// [cmp.alg], comparison algorithms
-// TODO: unimplemented
-template<class _Tp> constexpr strong_ordering strong_order(const _Tp& __lhs, const _Tp& __rhs);
-template<class _Tp> constexpr weak_ordering weak_order(const _Tp& __lhs, const _Tp& __rhs);
-template<class _Tp> constexpr partial_ordering partial_order(const _Tp& __lhs, const _Tp& __rhs);
-template<class _Tp> constexpr strong_equality strong_equal(const _Tp& __lhs, const _Tp& __rhs);
-template<class _Tp> constexpr weak_equality weak_equal(const _Tp& __lhs, const _Tp& __rhs);
-
-#endif // _LIBCPP_STD_VER > 17
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP_COMPARE