Implement P0013R1: Logical Operator Type Traits. Make a hidden implementation (__and_, __or_, and __not_) so that we can use them elsewhere in non-C++17 code - for example, in the LFTS

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@253215 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/type_traits b/include/type_traits
index 576e28f..8d55ea5 100644
--- a/include/type_traits
+++ b/include/type_traits
@@ -205,145 +205,157 @@
     template <class...>
       using void_t = void;   // C++17
       
-	  // See C++14 20.10.4.1, primary type categories
-	  template <class T> constexpr bool is_void_v
-		= is_void<T>::value;                                             // C++17
-	  template <class T> constexpr bool is_null_pointer_v
-		= is_null_pointer<T>::value;                                     // C++17
-	  template <class T> constexpr bool is_integral_v
-		= is_integral<T>::value;                                         // C++17
-	  template <class T> constexpr bool is_floating_point_v
-		= is_floating_point<T>::value;                                   // C++17
-	  template <class T> constexpr bool is_array_v
-		= is_array<T>::value;                                            // C++17
-	  template <class T> constexpr bool is_pointer_v
-		= is_pointer<T>::value;                                          // C++17
-	  template <class T> constexpr bool is_lvalue_reference_v
-		= is_lvalue_reference<T>::value;                                 // C++17
-	  template <class T> constexpr bool is_rvalue_reference_v
-		= is_rvalue_reference<T>::value;                                 // C++17
-	  template <class T> constexpr bool is_member_object_pointer_v
-		= is_member_object_pointer<T>::value;                            // C++17
-	  template <class T> constexpr bool is_member_function_pointer_v
-		= is_member_function_pointer<T>::value;                          // C++17
-	  template <class T> constexpr bool is_enum_v
-		= is_enum<T>::value;                                             // C++17
-	  template <class T> constexpr bool is_union_v
-		= is_union<T>::value;                                            // C++17
-	  template <class T> constexpr bool is_class_v
-		= is_class<T>::value;                                            // C++17
-	  template <class T> constexpr bool is_function_v
-		= is_function<T>::value;                                         // C++17
+      // See C++14 20.10.4.1, primary type categories
+      template <class T> constexpr bool is_void_v
+        = is_void<T>::value;                                             // C++17
+      template <class T> constexpr bool is_null_pointer_v
+        = is_null_pointer<T>::value;                                     // C++17
+      template <class T> constexpr bool is_integral_v
+        = is_integral<T>::value;                                         // C++17
+      template <class T> constexpr bool is_floating_point_v
+        = is_floating_point<T>::value;                                   // C++17
+      template <class T> constexpr bool is_array_v
+        = is_array<T>::value;                                            // C++17
+      template <class T> constexpr bool is_pointer_v
+        = is_pointer<T>::value;                                          // C++17
+      template <class T> constexpr bool is_lvalue_reference_v
+        = is_lvalue_reference<T>::value;                                 // C++17
+      template <class T> constexpr bool is_rvalue_reference_v
+        = is_rvalue_reference<T>::value;                                 // C++17
+      template <class T> constexpr bool is_member_object_pointer_v
+        = is_member_object_pointer<T>::value;                            // C++17
+      template <class T> constexpr bool is_member_function_pointer_v
+        = is_member_function_pointer<T>::value;                          // C++17
+      template <class T> constexpr bool is_enum_v
+        = is_enum<T>::value;                                             // C++17
+      template <class T> constexpr bool is_union_v
+        = is_union<T>::value;                                            // C++17
+      template <class T> constexpr bool is_class_v
+        = is_class<T>::value;                                            // C++17
+      template <class T> constexpr bool is_function_v
+        = is_function<T>::value;                                         // C++17
 
-	  // See C++14 20.10.4.2, composite type categories
-	  template <class T> constexpr bool is_reference_v
-		= is_reference<T>::value;                                        // C++17
-	  template <class T> constexpr bool is_arithmetic_v
-		= is_arithmetic<T>::value;                                       // C++17
-	  template <class T> constexpr bool is_fundamental_v
-		= is_fundamental<T>::value;                                      // C++17
-	  template <class T> constexpr bool is_object_v
-		= is_object<T>::value;                                           // C++17
-	  template <class T> constexpr bool is_scalar_v
-		= is_scalar<T>::value;                                           // C++17
-	  template <class T> constexpr bool is_compound_v
-		= is_compound<T>::value;                                         // C++17
-	  template <class T> constexpr bool is_member_pointer_v
-		= is_member_pointer<T>::value;                                   // C++17
+      // See C++14 20.10.4.2, composite type categories
+      template <class T> constexpr bool is_reference_v
+        = is_reference<T>::value;                                        // C++17
+      template <class T> constexpr bool is_arithmetic_v
+        = is_arithmetic<T>::value;                                       // C++17
+      template <class T> constexpr bool is_fundamental_v
+        = is_fundamental<T>::value;                                      // C++17
+      template <class T> constexpr bool is_object_v
+        = is_object<T>::value;                                           // C++17
+      template <class T> constexpr bool is_scalar_v
+        = is_scalar<T>::value;                                           // C++17
+      template <class T> constexpr bool is_compound_v
+        = is_compound<T>::value;                                         // C++17
+      template <class T> constexpr bool is_member_pointer_v
+        = is_member_pointer<T>::value;                                   // C++17
 
-	  // See C++14 20.10.4.3, type properties
-	  template <class T> constexpr bool is_const_v
-		= is_const<T>::value;                                            // C++17
-	  template <class T> constexpr bool is_volatile_v
-		= is_volatile<T>::value;                                         // C++17
-	  template <class T> constexpr bool is_trivial_v
-		= is_trivial<T>::value;                                          // C++17
-	  template <class T> constexpr bool is_trivially_copyable_v
-		= is_trivially_copyable<T>::value;                               // C++17
-	  template <class T> constexpr bool is_standard_layout_v
-		= is_standard_layout<T>::value;                                  // C++17
-	  template <class T> constexpr bool is_pod_v
-		= is_pod<T>::value;                                              // C++17
-	  template <class T> constexpr bool is_literal_type_v
-		= is_literal_type<T>::value;                                     // C++17
-	  template <class T> constexpr bool is_empty_v
-		= is_empty<T>::value;                                            // C++17
-	  template <class T> constexpr bool is_polymorphic_v
-		= is_polymorphic<T>::value;                                      // C++17
-	  template <class T> constexpr bool is_abstract_v
-		= is_abstract<T>::value;                                         // C++17
-	  template <class T> constexpr bool is_final_v
-		= is_final<T>::value;                                            // C++17
-	  template <class T> constexpr bool is_signed_v
-		= is_signed<T>::value;                                           // C++17
-	  template <class T> constexpr bool is_unsigned_v
-		= is_unsigned<T>::value;                                         // C++17
-	  template <class T, class... Args> constexpr bool is_constructible_v
-		= is_constructible<T, Args...>::value;                           // C++17
-	  template <class T> constexpr bool is_default_constructible_v
-		= is_default_constructible<T>::value;                            // C++17
-	  template <class T> constexpr bool is_copy_constructible_v
-		= is_copy_constructible<T>::value;                               // C++17
-	  template <class T> constexpr bool is_move_constructible_v
-		= is_move_constructible<T>::value;                               // C++17
-	  template <class T, class U> constexpr bool is_assignable_v
-		= is_assignable<T, U>::value;                                    // C++17
-	  template <class T> constexpr bool is_copy_assignable_v
-		= is_copy_assignable<T>::value;                                  // C++17
-	  template <class T> constexpr bool is_move_assignable_v
-		= is_move_assignable<T>::value;                                  // C++17
-	  template <class T> constexpr bool is_destructible_v
-		= is_destructible<T>::value;                                     // C++17
-	  template <class T, class... Args> constexpr bool is_trivially_constructible_v
-		= is_trivially_constructible<T, Args...>::value;                 // C++17
-	  template <class T> constexpr bool is_trivially_default_constructible_v
-		= is_trivially_default_constructible<T>::value;                  // C++17
-	  template <class T> constexpr bool is_trivially_copy_constructible_v
-		= is_trivially_copy_constructible<T>::value;                     // C++17
-	  template <class T> constexpr bool is_trivially_move_constructible_v
-		= is_trivially_move_constructible<T>::value;                     // C++17
-	  template <class T, class U> constexpr bool is_trivially_assignable_v
-		= is_trivially_assignable<T, U>::value;                          // C++17
-	  template <class T> constexpr bool is_trivially_copy_assignable_v
-		= is_trivially_copy_assignable<T>::value;                        // C++17
-	  template <class T> constexpr bool is_trivially_move_assignable_v
-		= is_trivially_move_assignable<T>::value;                        // C++17
-	  template <class T> constexpr bool is_trivially_destructible_v
-		= is_trivially_destructible<T>::value;                           // C++17
-	  template <class T, class... Args> constexpr bool is_nothrow_constructible_v
-		= is_nothrow_constructible<T, Args...>::value;                   // C++17
-	  template <class T> constexpr bool is_nothrow_default_constructible_v
-		= is_nothrow_default_constructible<T>::value;                    // C++17
-	  template <class T> constexpr bool is_nothrow_copy_constructible_v
-		= is_nothrow_copy_constructible<T>::value;                       // C++17
-	  template <class T> constexpr bool is_nothrow_move_constructible_v
-		= is_nothrow_move_constructible<T>::value;                       // C++17
-	  template <class T, class U> constexpr bool is_nothrow_assignable_v
-		= is_nothrow_assignable<T, U>::value;                            // C++17
-	  template <class T> constexpr bool is_nothrow_copy_assignable_v
-		= is_nothrow_copy_assignable<T>::value;                          // C++17
-	  template <class T> constexpr bool is_nothrow_move_assignable_v
-		= is_nothrow_move_assignable<T>::value;                          // C++17
-	  template <class T> constexpr bool is_nothrow_destructible_v
-		= is_nothrow_destructible<T>::value;                             // C++17
-	  template <class T> constexpr bool has_virtual_destructor_v
-		= has_virtual_destructor<T>::value;                              // C++17
+      // See C++14 20.10.4.3, type properties
+      template <class T> constexpr bool is_const_v
+        = is_const<T>::value;                                            // C++17
+      template <class T> constexpr bool is_volatile_v
+        = is_volatile<T>::value;                                         // C++17
+      template <class T> constexpr bool is_trivial_v
+        = is_trivial<T>::value;                                          // C++17
+      template <class T> constexpr bool is_trivially_copyable_v
+        = is_trivially_copyable<T>::value;                               // C++17
+      template <class T> constexpr bool is_standard_layout_v
+        = is_standard_layout<T>::value;                                  // C++17
+      template <class T> constexpr bool is_pod_v
+        = is_pod<T>::value;                                              // C++17
+      template <class T> constexpr bool is_literal_type_v
+        = is_literal_type<T>::value;                                     // C++17
+      template <class T> constexpr bool is_empty_v
+        = is_empty<T>::value;                                            // C++17
+      template <class T> constexpr bool is_polymorphic_v
+        = is_polymorphic<T>::value;                                      // C++17
+      template <class T> constexpr bool is_abstract_v
+        = is_abstract<T>::value;                                         // C++17
+      template <class T> constexpr bool is_final_v
+        = is_final<T>::value;                                            // C++17
+      template <class T> constexpr bool is_signed_v
+        = is_signed<T>::value;                                           // C++17
+      template <class T> constexpr bool is_unsigned_v
+        = is_unsigned<T>::value;                                         // C++17
+      template <class T, class... Args> constexpr bool is_constructible_v
+        = is_constructible<T, Args...>::value;                           // C++17
+      template <class T> constexpr bool is_default_constructible_v
+        = is_default_constructible<T>::value;                            // C++17
+      template <class T> constexpr bool is_copy_constructible_v
+        = is_copy_constructible<T>::value;                               // C++17
+      template <class T> constexpr bool is_move_constructible_v
+        = is_move_constructible<T>::value;                               // C++17
+      template <class T, class U> constexpr bool is_assignable_v
+        = is_assignable<T, U>::value;                                    // C++17
+      template <class T> constexpr bool is_copy_assignable_v
+        = is_copy_assignable<T>::value;                                  // C++17
+      template <class T> constexpr bool is_move_assignable_v
+        = is_move_assignable<T>::value;                                  // C++17
+      template <class T> constexpr bool is_destructible_v
+        = is_destructible<T>::value;                                     // C++17
+      template <class T, class... Args> constexpr bool is_trivially_constructible_v
+        = is_trivially_constructible<T, Args...>::value;                 // C++17
+      template <class T> constexpr bool is_trivially_default_constructible_v
+        = is_trivially_default_constructible<T>::value;                  // C++17
+      template <class T> constexpr bool is_trivially_copy_constructible_v
+        = is_trivially_copy_constructible<T>::value;                     // C++17
+      template <class T> constexpr bool is_trivially_move_constructible_v
+        = is_trivially_move_constructible<T>::value;                     // C++17
+      template <class T, class U> constexpr bool is_trivially_assignable_v
+        = is_trivially_assignable<T, U>::value;                          // C++17
+      template <class T> constexpr bool is_trivially_copy_assignable_v
+        = is_trivially_copy_assignable<T>::value;                        // C++17
+      template <class T> constexpr bool is_trivially_move_assignable_v
+        = is_trivially_move_assignable<T>::value;                        // C++17
+      template <class T> constexpr bool is_trivially_destructible_v
+        = is_trivially_destructible<T>::value;                           // C++17
+      template <class T, class... Args> constexpr bool is_nothrow_constructible_v
+        = is_nothrow_constructible<T, Args...>::value;                   // C++17
+      template <class T> constexpr bool is_nothrow_default_constructible_v
+        = is_nothrow_default_constructible<T>::value;                    // C++17
+      template <class T> constexpr bool is_nothrow_copy_constructible_v
+        = is_nothrow_copy_constructible<T>::value;                       // C++17
+      template <class T> constexpr bool is_nothrow_move_constructible_v
+        = is_nothrow_move_constructible<T>::value;                       // C++17
+      template <class T, class U> constexpr bool is_nothrow_assignable_v
+        = is_nothrow_assignable<T, U>::value;                            // C++17
+      template <class T> constexpr bool is_nothrow_copy_assignable_v
+        = is_nothrow_copy_assignable<T>::value;                          // C++17
+      template <class T> constexpr bool is_nothrow_move_assignable_v
+        = is_nothrow_move_assignable<T>::value;                          // C++17
+      template <class T> constexpr bool is_nothrow_destructible_v
+        = is_nothrow_destructible<T>::value;                             // C++17
+      template <class T> constexpr bool has_virtual_destructor_v
+        = has_virtual_destructor<T>::value;                              // C++17
 
-	  // See C++14 20.10.5, type property queries
-	  template <class T> constexpr size_t alignment_of_v
-		= alignment_of<T>::value;                                        // C++17
-	  template <class T> constexpr size_t rank_v
-		= rank<T>::value;                                                // C++17
-	  template <class T, unsigned I = 0> constexpr size_t extent_v
-		= extent<T, I>::value;                                           // C++17
+      // See C++14 20.10.5, type property queries
+      template <class T> constexpr size_t alignment_of_v
+        = alignment_of<T>::value;                                        // C++17
+      template <class T> constexpr size_t rank_v
+        = rank<T>::value;                                                // C++17
+      template <class T, unsigned I = 0> constexpr size_t extent_v
+        = extent<T, I>::value;                                           // C++17
 
-	  // See C++14 20.10.6, type relations
-	  template <class T, class U> constexpr bool is_same_v
-		= is_same<T, U>::value;                                          // C++17
-	  template <class Base, class Derived> constexpr bool is_base_of_v
-		= is_base_of<Base, Derived>::value;                              // C++17
-	  template <class From, class To> constexpr bool is_convertible_v
-		= is_convertible<From, To>::value;                               // C++17
+      // See C++14 20.10.6, type relations
+      template <class T, class U> constexpr bool is_same_v
+        = is_same<T, U>::value;                                          // C++17
+      template <class Base, class Derived> constexpr bool is_base_of_v
+        = is_base_of<Base, Derived>::value;                              // C++17
+      template <class From, class To> constexpr bool is_convertible_v
+        = is_convertible<From, To>::value;                               // C++17
+
+      // [meta.logical], logical operator traits:
+      template<class... B> struct conjunction;                           // C++17
+      template<class... B> 
+        constexpr bool conjunction_v = conjunction<B...>::value;         // C++17
+      template<class... B> struct disjunction;                           // C++17
+      template<class... B>
+        constexpr bool disjunction_v = disjunction<B...>::value;         // C++17
+      template<class B> struct negation;                                 // C++17
+      template<class B> 
+        constexpr bool negation_v = negation<B>::value;                  // C++17
+
 }
 
 */
@@ -409,9 +421,9 @@
 #if _LIBCPP_STD_VER > 14
 template <bool __b>
 using bool_constant = integral_constant<bool, __b>;
-#define	_LIBCPP_BOOL_CONSTANT(__b) bool_constant<(__b)>
+#define _LIBCPP_BOOL_CONSTANT(__b) bool_constant<(__b)>
 #else
-#define	_LIBCPP_BOOL_CONSTANT(__b) integral_constant<bool,(__b)>
+#define _LIBCPP_BOOL_CONSTANT(__b) integral_constant<bool,(__b)>
 #endif
 
 typedef _LIBCPP_BOOL_CONSTANT(true)  true_type;
@@ -462,6 +474,36 @@
 template <class _Pred>
 struct __lazy_not : integral_constant<bool, !_Pred::type::value> {};
 
+// __and_
+template<class...> struct __and_;
+template<> struct __and_<> : true_type {};
+
+template<class _B0> struct __and_<_B0> : _B0 {};
+
+template<class _B0, class _B1>
+struct __and_<_B0, _B1> : conditional<_B0::value, _B1, _B0>::type {};
+
+template<class _B0, class _B1, class _B2, class... _Bn>
+struct __and_<_B0, _B1, _B2, _Bn...> 
+        : conditional<_B0::value, __and_<_B1, _B2, _Bn...>, _B0>::type {};
+
+// __or_
+template<class...> struct __or_;
+template<> struct __or_<> : false_type {};
+
+template<class _B0> struct __or_<_B0> : _B0 {};
+
+template<class _B0, class _B1>
+struct __or_<_B0, _B1> : conditional<_B0::value, _B0, _B1>::type {};
+
+template<class _B0, class _B1, class _B2, class... _Bn>
+struct __or_<_B0, _B1, _B2, _Bn...> 
+        : conditional<_B0::value, _B0, __or_<_B1, _B2, _Bn...> >::type {};
+
+// __not_
+template<class _Tp> 
+struct __not_ : conditional<_Tp::value, false_type, true_type>::type {};
+
 #endif // !defined(_LIBCPP_HAS_NO_VARIADICS)
 
 // is_const
@@ -4257,7 +4299,21 @@
 
 #if _LIBCPP_STD_VER > 14
 template <class...> using void_t = void;
-#endif
+
+# ifndef _LIBCPP_HAS_NO_VARIADICS
+template <class... _Args>
+struct conjunction : __and_<_Args...> {};
+template<class... _Args> constexpr bool conjunction_v = conjunction<_Args...>::value;
+
+template <class... _Args>
+struct disjunction : __or_<_Args...> {};
+template<class... _Args> constexpr bool disjunction_v = disjunction<_Args...>::value;
+
+template <class _Tp>
+struct negation : __not_<_Tp> {};
+template<class _Tp> constexpr bool negation_v = negation<_Tp>::value;
+# endif // _LIBCPP_HAS_NO_VARIADICS
+#endif  // _LIBCPP_STD_VER > 14
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/test/std/utilities/meta/meta.logical/conjunction.pass.cpp b/test/std/utilities/meta/meta.logical/conjunction.pass.cpp
new file mode 100644
index 0000000..dce58ec
--- /dev/null
+++ b/test/std/utilities/meta/meta.logical/conjunction.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+// type_traits
+
+// template<class... B> struct conjunction;                           // C++17
+// template<class... B> 
+//   constexpr bool conjunction_v = conjunction<B...>::value;         // C++17
+
+#include <type_traits>
+#include <cassert>
+
+struct True  { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main()
+{
+    static_assert ( std::conjunction<>::value, "" );
+    static_assert ( std::conjunction<std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::false_type>::value, "" );
+
+    static_assert ( std::conjunction_v<>, "" );
+    static_assert ( std::conjunction_v<std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::false_type>, "" );
+
+    static_assert ( std::conjunction<std::true_type,  std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::true_type,  std::false_type>::value, "" );
+    static_assert (!std::conjunction<std::false_type, std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::false_type, std::false_type>::value, "" );
+    
+    static_assert ( std::conjunction_v<std::true_type,  std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::true_type,  std::false_type>, "" );
+    static_assert (!std::conjunction_v<std::false_type, std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::false_type, std::false_type>, "" );
+
+    static_assert ( std::conjunction<std::true_type,  std::true_type,  std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::true_type,  std::false_type, std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::false_type, std::true_type,  std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::false_type, std::false_type, std::true_type >::value, "" );
+    static_assert (!std::conjunction<std::true_type,  std::true_type,  std::false_type>::value, "" );
+    static_assert (!std::conjunction<std::true_type,  std::false_type, std::false_type>::value, "" );
+    static_assert (!std::conjunction<std::false_type, std::true_type,  std::false_type>::value, "" );
+    static_assert (!std::conjunction<std::false_type, std::false_type, std::false_type>::value, "" );
+
+    static_assert ( std::conjunction_v<std::true_type,  std::true_type,  std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::true_type,  std::false_type, std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::false_type, std::true_type,  std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::false_type, std::false_type, std::true_type >, "" );
+    static_assert (!std::conjunction_v<std::true_type,  std::true_type,  std::false_type>, "" );
+    static_assert (!std::conjunction_v<std::true_type,  std::false_type, std::false_type>, "" );
+    static_assert (!std::conjunction_v<std::false_type, std::true_type,  std::false_type>, "" );
+    static_assert (!std::conjunction_v<std::false_type, std::false_type, std::false_type>, "" );
+
+    static_assert ( std::conjunction<True >::value, "" );
+    static_assert (!std::conjunction<False>::value, "" );
+
+    static_assert ( std::conjunction_v<True >, "" );
+    static_assert (!std::conjunction_v<False>, "" );
+}
diff --git a/test/std/utilities/meta/meta.logical/disjunction.pass.cpp b/test/std/utilities/meta/meta.logical/disjunction.pass.cpp
new file mode 100644
index 0000000..13cd934
--- /dev/null
+++ b/test/std/utilities/meta/meta.logical/disjunction.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+// type_traits
+
+// template<class... B> struct disjunction;                           // C++17
+// template<class... B> 
+//   constexpr bool disjunction_v = disjunction<B...>::value;         // C++17
+
+#include <type_traits>
+#include <cassert>
+
+struct True  { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main()
+{
+    static_assert (!std::disjunction<>::value, "" );
+    static_assert ( std::disjunction<std::true_type >::value, "" );
+    static_assert (!std::disjunction<std::false_type>::value, "" );
+
+    static_assert (!std::disjunction_v<>, "" );
+    static_assert ( std::disjunction_v<std::true_type >, "" );
+    static_assert (!std::disjunction_v<std::false_type>, "" );
+
+    static_assert ( std::disjunction<std::true_type,  std::true_type >::value, "" );
+    static_assert ( std::disjunction<std::true_type,  std::false_type>::value, "" );
+    static_assert ( std::disjunction<std::false_type, std::true_type >::value, "" );
+    static_assert (!std::disjunction<std::false_type, std::false_type>::value, "" );
+    
+    static_assert ( std::disjunction_v<std::true_type,  std::true_type >, "" );
+    static_assert ( std::disjunction_v<std::true_type,  std::false_type>, "" );
+    static_assert ( std::disjunction_v<std::false_type, std::true_type >, "" );
+    static_assert (!std::disjunction_v<std::false_type, std::false_type>, "" );
+
+    static_assert ( std::disjunction<std::true_type,  std::true_type,  std::true_type >::value, "" );
+    static_assert ( std::disjunction<std::true_type,  std::false_type, std::true_type >::value, "" );
+    static_assert ( std::disjunction<std::false_type, std::true_type,  std::true_type >::value, "" );
+    static_assert ( std::disjunction<std::false_type, std::false_type, std::true_type >::value, "" );
+    static_assert ( std::disjunction<std::true_type,  std::true_type,  std::false_type>::value, "" );
+    static_assert ( std::disjunction<std::true_type,  std::false_type, std::false_type>::value, "" );
+    static_assert ( std::disjunction<std::false_type, std::true_type,  std::false_type>::value, "" );
+    static_assert (!std::disjunction<std::false_type, std::false_type, std::false_type>::value, "" );
+
+    static_assert ( std::disjunction_v<std::true_type,  std::true_type,  std::true_type >, "" );
+    static_assert ( std::disjunction_v<std::true_type,  std::false_type, std::true_type >, "" );
+    static_assert ( std::disjunction_v<std::false_type, std::true_type,  std::true_type >, "" );
+    static_assert ( std::disjunction_v<std::false_type, std::false_type, std::true_type >, "" );
+    static_assert ( std::disjunction_v<std::true_type,  std::true_type,  std::false_type>, "" );
+    static_assert ( std::disjunction_v<std::true_type,  std::false_type, std::false_type>, "" );
+    static_assert ( std::disjunction_v<std::false_type, std::true_type,  std::false_type>, "" );
+    static_assert (!std::disjunction_v<std::false_type, std::false_type, std::false_type>, "" );
+
+    static_assert ( std::disjunction<True >::value, "" );
+    static_assert (!std::disjunction<False>::value, "" );
+
+    static_assert ( std::disjunction_v<True >, "" );
+    static_assert (!std::disjunction_v<False>, "" );
+}
diff --git a/test/std/utilities/meta/meta.logical/negation.pass.cpp b/test/std/utilities/meta/meta.logical/negation.pass.cpp
new file mode 100644
index 0000000..76ff6c5
--- /dev/null
+++ b/test/std/utilities/meta/meta.logical/negation.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+// type_traits
+
+// template<class B> struct negation;                        // C++17
+// template<class B> 
+//   constexpr bool negation_v = negation<B>::value;         // C++17
+
+#include <type_traits>
+#include <cassert>
+
+struct True  { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main()
+{
+    static_assert (!std::negation<std::true_type >::value, "" );
+    static_assert ( std::negation<std::false_type>::value, "" );
+
+    static_assert (!std::negation_v<std::true_type >, "" );
+    static_assert ( std::negation_v<std::false_type>, "" );
+
+    static_assert (!std::negation<True >::value, "" );
+    static_assert ( std::negation<False>::value, "" );
+
+    static_assert (!std::negation_v<True >, "" );
+    static_assert ( std::negation_v<False>, "" );
+
+    static_assert ( std::negation<std::negation<std::true_type >>::value, "" );
+    static_assert (!std::negation<std::negation<std::false_type>>::value, "" );
+}
diff --git a/www/cxx1z_status.html b/www/cxx1z_status.html
index 926aca7..7d8238f 100644
--- a/www/cxx1z_status.html
+++ b/www/cxx1z_status.html
@@ -76,7 +76,7 @@
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/P0007R1.html">P0007R1</a></td><td>LWG</td><td>Constant View: A proposal for a <tt>std::as_const</tt> helper function template.</td><td>Kona</td><td>In progress</td><td></td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/P0156R0.htm" >P0156R0</a></td><td>LWG</td><td>Variadic lock_guard(rev 3).</td><td>Kona</td><td></td><td></td></tr>
 	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/P0074R0.html">P0074R0</a></td><td>LWG</td><td>Making <tt>std::owner_less</tt> more flexible</td><td>Kona</td><td>Complete</td><td>3.8</td></tr>
-	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/P0013R1.html">P0013R1</a></td><td>LWG</td><td>Logical type traits rev 2</td><td>Kona</td><td>In progress</td><td></td></tr>
+	<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/P0013R1.html">P0013R1</a></td><td>LWG</td><td>Logical type traits rev 2</td><td>Kona</td><td>Complete</td><td>3.8</td></tr>
 <!--  	<tr><td></td><td></td><td></td><td></td><td></td><td></td></tr> -->
   </table>