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40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
/* Copyright (C) 2020 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#pragma once
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#include <type_traits>
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#include <cstring>
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namespace utils
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{
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template <class To, class From>
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std::enable_if_t<
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sizeof(To) == sizeof(From) && std::is_trivially_copyable_v<From> && std::is_trivially_copyable_v<To>, To>
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// constexpr support needs compiler magic
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bitCast(const From& src) noexcept
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{
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static_assert(std::is_trivially_constructible_v<To>,
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"This implementation additionally requires "
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"destination type to be trivially constructible");
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To dst;
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std::memcpy(&dst, &src, sizeof(To));
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return dst;
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}
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} // namespace utils
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