39 lines
888 B
Plaintext
39 lines
888 B
Plaintext
/*
|
|
(c) 2014-2016 Glen Joseph Fernandes
|
|
<glenjofe -at- gmail.com>
|
|
|
|
Distributed under the Boost Software
|
|
License, Version 1.0.
|
|
http://boost.org/LICENSE_1_0.txt
|
|
*/
|
|
#ifndef BOOST_ALIGN_DETAIL_ALIGN_HPP
|
|
#define BOOST_ALIGN_DETAIL_ALIGN_HPP
|
|
|
|
#include <boost/align/detail/is_alignment.hpp>
|
|
#include <boost/assert.hpp>
|
|
|
|
namespace boost {
|
|
namespace alignment {
|
|
|
|
inline void* align(std::size_t alignment, std::size_t size,
|
|
void*& ptr, std::size_t& space)
|
|
{
|
|
BOOST_ASSERT(detail::is_alignment(alignment));
|
|
if (size <= space) {
|
|
char* p = (char*)(((std::size_t)ptr + alignment - 1) &
|
|
~(alignment - 1));
|
|
std::size_t n = space - (p - static_cast<char*>(ptr));
|
|
if (size <= n) {
|
|
ptr = p;
|
|
space = n;
|
|
return p;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
} /* .alignment */
|
|
} /* .boost */
|
|
|
|
#endif
|