hash-murmur3.h

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/*
 * Copyright (c) 2012 Lawrence Livermore National Laboratory
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Peter D. Barnes, Jr. <pdbarnes@llnl.gov>
 */
 
#ifndef HASH_MURMUR3_H
#define HASH_MURMUR3_H
 
#include "hash-function.h"
 
namespace ns3
{
 
namespace Hash
{
 
namespace Function
{
 
class Murmur3 : public Implementation
{
  public:
    Murmur3();
    uint32_t GetHash32(const char* buffer, const std::size_t size) override;
    uint64_t GetHash64(const char* buffer, const std::size_t size) override;
    void clear() override;
 
  private:
    static constexpr auto SEED{0x8BADF00D}; // Ate bad food
 
    uint32_t m_hash32;
    std::size_t m_size32;
    uint64_t m_hash64[2];
    std::size_t m_size64;
}; // class Murmur3
 
} // namespace Function
 
} // namespace Hash
 
} // namespace ns3
 
#endif /* HASH_MURMUR3_H */