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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // type_traits
     11 
     12 // rank
     13 
     14 #include <type_traits>
     15 
     16 #include "test_macros.h"
     17 
     18 template <class T, unsigned A>
     19 void test_rank()
     20 {
     21     static_assert( std::rank<T>::value == A, "");
     22     static_assert( std::rank<const T>::value == A, "");
     23     static_assert( std::rank<volatile T>::value == A, "");
     24     static_assert( std::rank<const volatile T>::value == A, "");
     25 #if TEST_STD_VER > 14
     26     static_assert( std::rank_v<T> == A, "");
     27     static_assert( std::rank_v<const T> == A, "");
     28     static_assert( std::rank_v<volatile T> == A, "");
     29     static_assert( std::rank_v<const volatile T> == A, "");
     30 #endif
     31 }
     32 
     33 class Class
     34 {
     35 public:
     36     ~Class();
     37 };
     38 
     39 int main()
     40 {
     41     test_rank<void, 0>();
     42     test_rank<int&, 0>();
     43     test_rank<Class, 0>();
     44     test_rank<int*, 0>();
     45     test_rank<const int*, 0>();
     46     test_rank<int, 0>();
     47     test_rank<double, 0>();
     48     test_rank<bool, 0>();
     49     test_rank<unsigned, 0>();
     50 
     51     test_rank<char[3], 1>();
     52     test_rank<char[][3], 2>();
     53     test_rank<char[][4][3], 3>();
     54 }
     55