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