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 18template <std::size_t N> 19std::bitset<N> 20make_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 28template <std::size_t N> 29void 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 38int 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