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 #include "test_macros.h" 17 18 #if defined(TEST_COMPILER_CLANG) 19 #pragma clang diagnostic ignored "-Wtautological-compare" 20 #elif defined(TEST_COMPILER_C1XX) 21 #pragma warning(disable: 6294) // Ill-defined for-loop: initial condition does not satisfy test. Loop body not executed. 22 #endif 23 24 template <std::size_t N> 25 std::bitset<N> 26 make_bitset() 27 { 28 std::bitset<N> v; 29 for (std::size_t i = 0; i < N; ++i) 30 v[i] = static_cast<bool>(std::rand() & 1); 31 return v; 32 } 33 34 template <std::size_t N> 35 void test_op_and_eq() 36 { 37 std::bitset<N> v1 = make_bitset<N>(); 38 std::bitset<N> v2 = make_bitset<N>(); 39 std::bitset<N> v3 = v1; 40 v1 &= v2; 41 for (std::size_t i = 0; i < N; ++i) 42 assert(v1[i] == (v3[i] && v2[i])); 43 } 44 45 int main() 46 { 47 test_op_and_eq<0>(); 48 test_op_and_eq<1>(); 49 test_op_and_eq<31>(); 50 test_op_and_eq<32>(); 51 test_op_and_eq<33>(); 52 test_op_and_eq<63>(); 53 test_op_and_eq<64>(); 54 test_op_and_eq<65>(); 55 test_op_and_eq<1000>(); 56 } 57
