chromium/base/allocator/partition_allocator/src/partition_alloc/reverse_bytes.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef PARTITION_ALLOC_REVERSE_BYTES_H_
#define PARTITION_ALLOC_REVERSE_BYTES_H_

// This header defines drop-in constexpr replacements for the
// byte-reversing routines that we used from `//base/sys_byteorder.h`.
// They will be made moot by C++23's <endian> header or by C++20's
// <bit> header.

#include <cstdint>

#include "partition_alloc/build_config.h"
#include "partition_alloc/partition_alloc_config.h"

namespace partition_alloc::internal {

constexpr uint32_t ReverseFourBytes(uint32_t value) { … }

constexpr uint64_t ReverseEightBytes(uint64_t value) { … }

constexpr uintptr_t ReverseBytes(uintptr_t value) { … }

}  // namespace partition_alloc::internal

#endif  // PARTITION_ALLOC_REVERSE_BYTES_H_