1 //===-- is_copy_assignable type_traits --------------------------*- C++ -*-===// 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 #ifndef LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_IS_COPY_ASSIGNABLE_H 9 #define LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_IS_COPY_ASSIGNABLE_H 10 11 #include "src/__support/CPP/type_traits/add_lvalue_reference.h" 12 #include "src/__support/CPP/type_traits/integral_constant.h" 13 #include "src/__support/macros/config.h" 14 15 namespace LIBC_NAMESPACE_DECL { 16 namespace cpp { 17 18 // is copy assignable 19 template <class T> 20 struct is_copy_assignable 21 : public integral_constant< 22 bool, __is_assignable(cpp::add_lvalue_reference_t<T>, 23 cpp::add_lvalue_reference_t<const T>)> {}; 24 25 template <class T> 26 LIBC_INLINE_VAR constexpr bool is_copy_assignable_v = 27 is_copy_assignable<T>::value; 28 29 } // namespace cpp 30 } // namespace LIBC_NAMESPACE_DECL 31 32 #endif // LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_IS_COPY_ASSIGNABLE_H 33