39 lines
888 B
C++
39 lines
888 B
C++
/*
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(c) 2014-2016 Glen Joseph Fernandes
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<glenjofe -at- gmail.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/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* 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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if (size <= space) {
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char* p = (char*)(((std::size_t)ptr + alignment - 1) &
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~(alignment - 1));
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std::size_t n = space - (p - static_cast<char*>(ptr));
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if (size <= n) {
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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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