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>& operator&=(const bitset<N>& rhs); 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_op_and_eq()31void test_op_and_eq() 32 { 33 std::bitset<N> v1 = make_bitset<N>(); 34 std::bitset<N> v2 = make_bitset<N>(); 35 std::bitset<N> v3 = v1; 36 v1 &= v2; 37 for (std::size_t i = 0; i < N; ++i) 38 assert(v1[i] == (v3[i] && v2[i])); 39 } 40 main()41int main() 42 { 43 test_op_and_eq<0>(); 44 test_op_and_eq<1>(); 45 test_op_and_eq<31>(); 46 test_op_and_eq<32>(); 47 test_op_and_eq<33>(); 48 test_op_and_eq<63>(); 49 test_op_and_eq<64>(); 50 test_op_and_eq<65>(); 51 test_op_and_eq<1000>(); 52 } 53