binutils-gdb/gdb/common/underlying.h

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/* Copyright (C) 2017-2019 Free Software Foundation, Inc.
This file is part of GDB.
This program 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; either version 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef COMMON_UNDERLYING_H
#define COMMON_UNDERLYING_H
#include <type_traits>
/* Convert an enum to its underlying value. */
template<typename E>
constexpr typename std::underlying_type<E>::type
to_underlying (E val) noexcept
{
return static_cast<typename std::underlying_type<E>::type> (val);
}
#endif