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 bitset<N>& flip(); 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> make_bitset()22make_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> test_flip_all()31void test_flip_all() 32 { 33 std::bitset<N> v1 = make_bitset<N>(); 34 std::bitset<N> v2 = v1; 35 v2.flip(); 36 for (std::size_t i = 0; i < N; ++i) 37 assert(v2[i] == ~v1[i]); 38 } 39 main()40int main() 41 { 42 test_flip_all<0>(); 43 test_flip_all<1>(); 44 test_flip_all<31>(); 45 test_flip_all<32>(); 46 test_flip_all<33>(); 47 test_flip_all<63>(); 48 test_flip_all<64>(); 49 test_flip_all<65>(); 50 test_flip_all<1000>(); 51 } 52