1 //===----------------------------------------------------------------------===// 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 9 #ifndef _LIBCPP___TYPE_TRAITS_RANK_H 10 #define _LIBCPP___TYPE_TRAITS_RANK_H 11 12 #include <__config> 13 #include <__type_traits/integral_constant.h> 14 #include <cstddef> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS rank 23 : public integral_constant<size_t, 0> {}; 24 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS rank<_Tp[]> 25 : public integral_constant<size_t, rank<_Tp>::value + 1> {}; 26 template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS rank<_Tp[_Np]> 27 : public integral_constant<size_t, rank<_Tp>::value + 1> {}; 28 29 #if _LIBCPP_STD_VER > 14 30 template <class _Tp> 31 inline constexpr size_t rank_v = rank<_Tp>::value; 32 #endif 33 34 _LIBCPP_END_NAMESPACE_STD 35 36 #endif // _LIBCPP___TYPE_TRAITS_RANK_H 37