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 // test constexpr bool operator[](size_t pos) const; 11 12 #include <bitset> 13 #include <cstdlib> 14 #include <cassert> 15 16 #if defined(__clang__) 17 #pragma clang diagnostic ignored "-Wtautological-compare" 18 #endif 19 20 template <std::size_t N> 21 std::bitset<N> 22 make_bitset() 23 { 24 std::bitset<N> v; 25 for (std::size_t i = 0; i < N; ++i) 26 v[i] = static_cast<bool>(std::rand() & 1); 27 return v; 28 } 29 30 template <std::size_t N> 31 void test_index_const() 32 { 33 const std::bitset<N> v1 = make_bitset<N>(); 34 if (N > 0) 35 { 36 assert(v1[N/2] == v1.test(N/2)); 37 } 38 } 39 40 int main() 41 { 42 test_index_const<0>(); 43 test_index_const<1>(); 44 test_index_const<31>(); 45 test_index_const<32>(); 46 test_index_const<33>(); 47 test_index_const<63>(); 48 test_index_const<64>(); 49 test_index_const<65>(); 50 test_index_const<1000>(); 51 } 52