A Discrete-Event Network Simulator
API
rng-stream.h
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 //
3 // Copyright (C) 2001 Pierre L'Ecuyer (lecuyer@iro.umontreal.ca)
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 // Modified for ns-3 by: Rajib Bhattacharjea<raj.b@gatech.edu>
19 
20 #ifndef RNGSTREAM_H
21 #define RNGSTREAM_H
22 #include <string>
23 #include <stdint.h>
24 
31 namespace ns3 {
32 
49 class RngStream
50 {
51 public:
59  RngStream (uint32_t seed, uint64_t stream, uint64_t substream);
65  RngStream (const RngStream & r);
72  double RandU01 (void);
73 
74 private:
82  void AdvanceNthBy (uint64_t nth, int by, double state[6]);
83 
85  double m_currentState[6];
86 };
87 
88 } // namespace ns3
89 
90 #endif
91 
92 
Combined Multiple-Recursive Generator MRG32k3a.
Definition: rng-stream.h:50
RngStream(uint32_t seed, uint64_t stream, uint64_t substream)
Construct from explicit seed, stream and substream values.
Definition: rng-stream.cc:370
double RandU01(void)
Generate the next random number for this stream.
Definition: rng-stream.cc:335
double m_currentState[6]
The RNG state vector.
Definition: rng-stream.h:85
void AdvanceNthBy(uint64_t nth, int by, double state[6])
Advance state of the RNG by leaps and bounds.
Definition: rng-stream.cc:393
Every class exported by the ns3 library is enclosed in the ns3 namespace.