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Sprout/sprout/cstring/memmove.hpp

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/*=============================================================================
2015-01-10 10:13:57 +00:00
Copyright (c) 2011-2015 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_CSTRING_MEMMOVE_HPP
#define SPROUT_CSTRING_MEMMOVE_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/workaround/std/cstddef.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/algorithm/cxx14/copy_backward.hpp>
namespace sprout {
namespace detail {
template<typename PtrIterator, typename ConstPtrIterator>
inline SPROUT_CXX14_CONSTEXPR PtrIterator
memmove(PtrIterator s1, ConstPtrIterator s2, std::size_t n) {
sprout::copy_backward(s2, s2 + n, s1);
return s1;
}
} // namespace detail
// 7.21.2.2 The memmove function
//
template<
typename T, typename CT,
typename sprout::enabler_if<std::is_convertible<T, void*>::value && std::is_convertible<CT, void const*>::value>::type = sprout::enabler
>
inline SPROUT_CXX14_CONSTEXPR void*
memmove(T s1, CT s2, std::size_t n) {
return sprout::detail::memmove(static_cast<unsigned char*>(s1), static_cast<unsigned char const*>(s2), n);
}
} // namespace sprout
#endif // #ifndef SPROUT_CSTRING_MEMMOVE_HPP