A Discrete-Event Network Simulator
API
hash-fnv.h
Go to the documentation of this file.
1/*
2 * Copyright (c) 2012 Lawrence Livermore National Laboratory
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation;
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 * Author: Peter D. Barnes, Jr. <pdbarnes@llnl.gov>
18 */
19
20#ifndef HASH_FNV_H
21#define HASH_FNV_H
22
23#include "hash-function.h"
24
31namespace ns3
32{
33
34namespace Hash
35{
36
37namespace Function
38{
39
55class Fnv1a : public Implementation
56{
57 public:
61 Fnv1a();
76 uint32_t GetHash32(const char* buffer, const size_t size) override;
91 uint64_t GetHash64(const char* buffer, const size_t size) override;
95 void clear() override;
96
97 private:
101 enum Seed
102 {
103 SEED = 0x8BADF00D
104 };
105
109 uint64_t m_hash64;
112}; // class Fnv1a
113
114} // namespace Function
115
116} // namespace Hash
117
118} // namespace ns3
119
120#endif /* HASH_FNV_H */
Fnv1a hash function implementation.
Definition: hash-fnv.h:56
@ SEED
Ate bad food.
Definition: hash-fnv.h:103
uint32_t m_hash32
Cache last hash value, for incremental hashing.
Definition: hash-fnv.h:108
uint32_t GetHash32(const char *buffer, const size_t size) override
Compute 32-bit hash of a byte buffer.
Definition: hash-fnv.cc:763
uint64_t GetHash64(const char *buffer, const size_t size) override
Compute 64-bit hash of a byte buffer.
Definition: hash-fnv.cc:770
uint64_t m_hash64
Cache last hash value, for incremental hashing.
Definition: hash-fnv.h:109
void clear() override
Restore initial state.
Definition: hash-fnv.cc:777
Hash function implementation base class.
Definition: hash-function.h:50
ns3::Hash::Implementation, ns3::Hash::Function::Hash32 and ns3::Hash::Function::Hash64 declarations.
Every class exported by the ns3 library is enclosed in the ns3 namespace.