29 lines
633 B
C++
29 lines
633 B
C++
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/*
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Copyright 2015 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_DOWN_HPP
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#define BOOST_ALIGN_DETAIL_ALIGN_DOWN_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_down(void* ptr, std::size_t alignment) BOOST_NOEXCEPT
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{
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BOOST_ASSERT(detail::is_alignment(alignment));
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return reinterpret_cast<void*>(~(alignment - 1) &
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reinterpret_cast<std::size_t>(ptr));
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}
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} /* alignment */
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} /* boost */
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#endif
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