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 #include <stdexcept> 16 17 #include "test_macros.h" 18 19 #if defined(TEST_COMPILER_C1XX) 20 #pragma warning(disable: 6294) // Ill-defined for-loop: initial condition does not satisfy test. Loop body not executed. 21 #endif 22 23 template <std::size_t N> 24 std::bitset<N> 25 make_bitset() 26 { 27 std::bitset<N> v; 28 for (std::size_t i = 0; i < N; ++i) 29 v[i] = static_cast<bool>(std::rand() & 1); 30 return v; 31 } 32 33 template <std::size_t N> 34 void test_flip_one(bool test_throws) 35 { 36 std::bitset<N> v = make_bitset<N>(); 37 #ifdef TEST_HAS_NO_EXCEPTIONS 38 if (test_throws) return; 39 #else 40 try 41 { 42 #endif 43 v.flip(50); 44 bool b = v[50]; 45 if (50 >= v.size()) 46 assert(false); 47 assert(v[50] == b); 48 v.flip(50); 49 assert(v[50] != b); 50 v.flip(50); 51 assert(v[50] == b); 52 assert(!test_throws); 53 #ifndef TEST_HAS_NO_EXCEPTIONS 54 } 55 catch (std::out_of_range&) 56 { 57 assert(test_throws); 58 } 59 #endif 60 } 61 62 int main() 63 { 64 test_flip_one<0>(true); 65 test_flip_one<1>(true); 66 test_flip_one<31>(true); 67 test_flip_one<32>(true); 68 test_flip_one<33>(true); 69 test_flip_one<63>(false); 70 test_flip_one<64>(false); 71 test_flip_one<65>(false); 72 test_flip_one<1000>(false); 73 } 74
