align/detail/align_up.hpp

0001 /*
0002 Copyright 2015 Glen Joseph Fernandes
0003 (glenjofe@gmail.com)
0004
0005 Distributed under the Boost Software License, Version 1.0.
0006 (http://www.boost.org/LICENSE_1_0.txt)
0007 */
0008 #ifndef BOOST_ALIGN_DETAIL_ALIGN_UP_HPP
0009 #define BOOST_ALIGN_DETAIL_ALIGN_UP_HPP
0010
0011 #include <boost/align/detail/is_alignment.hpp>
0012 #include <boost/assert.hpp>
0013
0014 namespace boost {
0015 namespace alignment {
0016
0017 inline void*
0018 align_up(void* ptr, std::size_t alignment) BOOST_NOEXCEPT
0019 {
0020     BOOST_ASSERT(detail::is_alignment(alignment));
0021     return reinterpret_cast<void*>(~(alignment - 1) &
0022         (reinterpret_cast<std::size_t>(ptr) + alignment - 1));
0023 }
0024
0025 } /* alignment */
0026 } /* boost */
0027
0028 #endif