A Discrete-Event Network Simulator
API
hash-fnv.h
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2012 Lawrence Livermore National Laboratory
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Peter D. Barnes, Jr. <pdbarnes@llnl.gov>
19 */
20
21#ifndef HASH_FNV_H
22#define HASH_FNV_H
23
24#include "hash-function.h"
25
32namespace ns3 {
33
34namespace Hash {
35
36namespace Function {
37
53class Fnv1a : public Implementation
54{
55public:
59 Fnv1a ();
74 uint32_t GetHash32 (const char * buffer, const size_t size);
89 uint64_t GetHash64 (const char * buffer, const size_t size);
93 virtual void clear (void);
94
95private:
99 enum seed
100 {
101 SEED = 0x8BADF00D
102 };
106 uint64_t m_hash64;
109}; // class Fnv1a
110
111} // namespace Function
112
113} // namespace Hash
114
115} // namespace ns3
116
117#endif /* HASH_FNV_H */
Fnv1a hash function implementation.
Definition: hash-fnv.h:54
uint64_t GetHash64(const char *buffer, const size_t size)
Compute 64-bit hash of a byte buffer.
Definition: hash-fnv.cc:763
uint32_t m_hash32
Cache last hash value, for incremental hashing.
Definition: hash-fnv.h:105
@ SEED
Ate bad food.
Definition: hash-fnv.h:101
virtual void clear(void)
Restore initial state.
Definition: hash-fnv.cc:771
uint64_t m_hash64
Cache last hash value, for incremental hashing.
Definition: hash-fnv.h:106
uint32_t GetHash32(const char *buffer, const size_t size)
Compute 32-bit hash of a byte buffer.
Definition: hash-fnv.cc:755
Hash function implementation base class.
Definition: hash-function.h:48
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.