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(size_t pos); 11 12 #include <bitset> 13 #include <cstdlib> 14 #include <cassert> 15 16 #include "test_macros.h" 17 18 #if defined(TEST_COMPILER_C1XX) 19 #pragma warning(disable: 6294) // Ill-defined for-loop: initial condition does not satisfy test. Loop body not executed. 20 #endif 21 22 template <std::size_t N> 23 std::bitset<N> make_bitset()24make_bitset() 25 { 26 std::bitset<N> v; 27 for (std::size_t i = 0; i < N; ++i) 28 v[i] = static_cast<bool>(std::rand() & 1); 29 return v; 30 } 31 32 template <std::size_t N> test_flip_one(bool test_throws)33void test_flip_one(bool test_throws) 34 { 35 std::bitset<N> v = make_bitset<N>(); 36 #ifdef TEST_HAS_NO_EXCEPTIONS 37 if (test_throws) return; 38 #else 39 try 40 { 41 #endif 42 v.flip(50); 43 bool b = v[50]; 44 if (50 >= v.size()) 45 assert(false); 46 assert(v[50] == b); 47 v.flip(50); 48 assert(v[50] != b); 49 v.flip(50); 50 assert(v[50] == b); 51 assert(!test_throws); 52 #ifndef TEST_HAS_NO_EXCEPTIONS 53 } 54 catch (std::out_of_range&) 55 { 56 assert(test_throws); 57 } 58 #endif 59 } 60 main()61int main() 62 { 63 test_flip_one<0>(true); 64 test_flip_one<1>(true); 65 test_flip_one<31>(true); 66 test_flip_one<32>(true); 67 test_flip_one<33>(true); 68 test_flip_one<63>(false); 69 test_flip_one<64>(false); 70 test_flip_one<65>(false); 71 test_flip_one<1000>(false); 72 } 73