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>>(size_t pos) const; 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 24template <std::size_t N> 25std::bitset<N> 26make_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 34template <std::size_t N> 35void test_right_shift() 36{ 37 for (std::size_t s = 0; s <= N+1; ++s) 38 { 39 std::bitset<N> v1 = make_bitset<N>(); 40 std::bitset<N> v2 = v1; 41 assert((v1 >>= s) == (v2 >> s)); 42 } 43} 44 45int main() 46{ 47 test_right_shift<0>(); 48 test_right_shift<1>(); 49 test_right_shift<31>(); 50 test_right_shift<32>(); 51 test_right_shift<33>(); 52 test_right_shift<63>(); 53 test_right_shift<64>(); 54 test_right_shift<65>(); 55 test_right_shift<1000>(); 56} 57