39 lines
983 B
C++
39 lines
983 B
C++
/*
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(c) 2014 Glen Joseph Fernandes
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glenjofe at gmail dot com
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Distributed under the Boost Software
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License, Version 1.0.
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http://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/assert.hpp>
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#include <boost/align/detail/address.hpp>
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#include <boost/align/detail/is_alignment.hpp>
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#include <cstddef>
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namespace boost {
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namespace alignment {
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inline void* align(std::size_t alignment, std::size_t size,
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void*& ptr, std::size_t& space)
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{
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BOOST_ASSERT(detail::is_alignment(alignment));
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std::size_t n = detail::address_t(ptr) & (alignment - 1);
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if (n != 0) {
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n = alignment - n;
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}
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void* p = 0;
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if (n <= space && size <= space - n) {
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p = static_cast<char*>(ptr) + n;
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ptr = p;
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space -= n;
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}
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return p;
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}
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}
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}
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#endif
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