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- /*
- Copyright 2014-2015 Glen Joseph Fernandes
- (glenjofe@gmail.com)
- Distributed under the Boost Software License, Version 1.0.
- (http://www.boost.org/LICENSE_1_0.txt)
- */
- #include <boost/align/align.hpp>
- #include <boost/align/is_aligned.hpp>
- #include <boost/core/lightweight_test.hpp>
- template<std::size_t Alignment>
- void test()
- {
- char s[Alignment << 1];
- char* b = s;
- while (!boost::alignment::is_aligned(b, Alignment)) {
- ++b;
- }
- {
- std::size_t n = Alignment;
- void* p = b;
- void* q = boost::alignment::align(Alignment, 1, p, n);
- BOOST_TEST(q == p);
- BOOST_TEST(q == b);
- BOOST_TEST(boost::alignment::is_aligned(q, Alignment));
- BOOST_TEST(n == Alignment);
- }
- {
- std::size_t n = 0;
- void* p = b;
- void* q = boost::alignment::align(Alignment, 1, p, n);
- BOOST_TEST(q == 0);
- BOOST_TEST(p == b);
- BOOST_TEST(n == 0);
- }
- {
- std::size_t n = Alignment - 1;
- void* p = &b[1];
- void* q = boost::alignment::align(Alignment, 1, p, n);
- BOOST_TEST(q == 0);
- BOOST_TEST(p == &b[1]);
- BOOST_TEST(n == Alignment - 1);
- }
- {
- std::size_t n = Alignment;
- void* p = &b[1];
- void* q = boost::alignment::align(Alignment, 1, p, n);
- BOOST_TEST(q == p);
- BOOST_TEST(p == &b[Alignment]);
- BOOST_TEST(boost::alignment::is_aligned(q, Alignment));
- BOOST_TEST(n == 1);
- }
- }
- int main()
- {
- test<1>();
- test<2>();
- test<4>();
- test<8>();
- test<16>();
- test<32>();
- test<64>();
- test<128>();
- return boost::report_errors();
- }
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