Sprout/sprout/cstring/memcpy.hpp
2016-02-25 18:48:28 +09:00

39 lines
1.4 KiB
C++

/*=============================================================================
Copyright (c) 2011-2016 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_MEMCPY_HPP
#define SPROUT_CSTRING_MEMCPY_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.hpp>
namespace sprout {
namespace detail {
template<typename PtrIterator, typename ConstPtrIterator>
inline SPROUT_CXX14_CONSTEXPR PtrIterator
memcpy(PtrIterator s1, ConstPtrIterator s2, std::size_t n) {
sprout::copy(s2, s2 + n, s1);
return s1;
}
} // namespace detail
// 7.21.2.1 The memcpy 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*
memcpy(T s1, CT s2, std::size_t n) {
return sprout::detail::memcpy(static_cast<unsigned char*>(s1), static_cast<unsigned char const*>(s2), n);
}
} // namespace sprout
#endif // #ifndef SPROUT_CSTRING_MEMCPY_HPP