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 bool none() const; 11 12 #include <bitset> 13 #include <type_traits> 14 #include <cassert> 15 16 template <std::size_t N> 17 void test_none() 18 { 19 std::bitset<N> v; 20 v.reset(); 21 assert(v.none() == true); 22 v.set(); 23 assert(v.none() == (N == 0)); 24 const bool greater_than_1 = std::integral_constant<bool, (N > 1)>::value; // avoid compiler warnings 25 if (greater_than_1) 26 { 27 v[N/2] = false; 28 assert(v.none() == false); 29 v.reset(); 30 v[N/2] = true; 31 assert(v.none() == false); 32 } 33 } 34 35 int main() 36 { 37 test_none<0>(); 38 test_none<1>(); 39 test_none<31>(); 40 test_none<32>(); 41 test_none<33>(); 42 test_none<63>(); 43 test_none<64>(); 44 test_none<65>(); 45 test_none<1000>(); 46 } 47
