1 /* 2 Copyright 2019 Glen Joseph Fernandes 3 (glenjofe@gmail.com) 4 5 Distributed under the Boost Software License, Version 1.0. 6 (http://www.boost.org/LICENSE_1_0.txt) 7 */ 8 #include <boost/align/align_down.hpp> 9 #include <boost/core/lightweight_test.hpp> 10 11 template<std::size_t N> 12 struct A { }; 13 14 template<class T, std::size_t N> test(A<N>)15void test(A<N>) 16 { 17 T v1 = N; 18 BOOST_TEST(boost::alignment::align_down(v1, N) == v1); 19 T v2 = N + 1; 20 BOOST_TEST(boost::alignment::align_down(v2, N) == v1); 21 } 22 23 template<class T> test(A<1>)24void test(A<1>) 25 { 26 T v = 1; 27 BOOST_TEST(boost::alignment::align_down(v, 1) == v); 28 } 29 30 template<class T> test()31void test() 32 { 33 test<T>(A<1>()); 34 test<T>(A<2>()); 35 test<T>(A<4>()); 36 test<T>(A<8>()); 37 test<T>(A<16>()); 38 test<T>(A<32>()); 39 test<T>(A<64>()); 40 test<T>(A<128>()); 41 } 42 main()43int main() 44 { 45 test<int>(); 46 test<unsigned>(); 47 test<long>(); 48 test<unsigned long>(); 49 test<short>(); 50 test<unsigned short>(); 51 #if !defined(BOOST_NO_LONG_LONG) 52 test<long long>(); 53 test<unsigned long long>(); 54 #endif 55 test<std::size_t>(); 56 test<std::ptrdiff_t>(); 57 58 return boost::report_errors(); 59 } 60