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OpenTTD-patches/src/core/bit_cast.hpp

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C++

/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file bit_cast.hpp std::bit_cast fallback */
#ifndef BIT_CAST_HPP
#define BIT_CAST_HPP
#ifdef __cpp_lib_bit_cast
#include <bit>
#else
#include <type_traits>
namespace std {
template <typename To, typename From>
constexpr To bit_cast(const From& from) noexcept
{
static_assert(std::is_trivially_constructible_v<To>);
To to;
memcpy(&to, &from, sizeof(To));
return to;
}
}
#endif
#endif /* BIT_CAST_HPP */