bits.h

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/*
 *    Copyright 2023 The ChampSim Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifdef CHAMPSIM_MODULE
#error "Modules should include msl/bits.h"
#endif
 
#ifndef UTIL_BITS_H
#define UTIL_BITS_H
 
#include <utility>
 
#include "../msl/bits.h"
 
namespace champsim
{
using msl::bitmask;
using msl::lg2;
using msl::splice_bits;
 
/*
 * A forward-port of C++23's function of the same name.
 * This avoids static_cast'ing an enumeration to an integer type other than its underlying type,
 * an action that could dodge -Wconversion
 */
template <typename E>
constexpr std::underlying_type_t<E> to_underlying(E e) noexcept
{
  return static_cast<std::underlying_type_t<E>>(e);
}
} // namespace champsim
 
#endif