/*
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Copyright 2014-2020 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_ALIGN_DETAIL_ALIGN_HPP
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#define BOOST_ALIGN_DETAIL_ALIGN_HPP
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#include <boost/align/detail/is_alignment.hpp>
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#include <boost/assert.hpp>
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namespace boost {
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namespace alignment {
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inline void*
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align(std::size_t alignment, std::size_t size, void*& ptr,
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std::size_t& space)
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{
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BOOST_ASSERT(boost::alignment::detail::is_alignment(alignment));
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if (size <= space) {
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char* p = reinterpret_cast<char*>(~(alignment - 1) &
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(reinterpret_cast<std::size_t>(ptr) + alignment - 1));
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std::size_t n = p - static_cast<char*>(ptr);
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if (n <= space - size) {
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ptr = p;
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space -= n;
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return p;
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}
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}
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return 0;
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}
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} /* alignment */
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} /* boost */
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#endif
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