A Discrete-Event Network Simulator
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random-stream.cc
1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2007 INRIA
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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 #include "random-stream.h"
21 #include "ns3/assert.h"
22 
23 #include <cmath>
24 
25 namespace ns3 {
26 
27 RandomStream::~RandomStream ()
28 {
29 }
30 
31 
32 RealRandomStream::RealRandomStream ()
33 {
34  m_stream = CreateObject<UniformRandomVariable> ();
35 }
36 
37 uint32_t
38 RealRandomStream::GetNext (uint32_t min, uint32_t max)
39 {
40  return m_stream->GetInteger (min, max);
41 }
42 
43 int64_t
45 {
46  m_stream->SetStream (stream);
47  return 1;
48 }
49 
50 void
51 TestRandomStream::AddNext (uint32_t v)
52 {
53  m_nexts.push_back (v);
54 }
55 
56 uint32_t
57 TestRandomStream::GetNext (uint32_t min, uint32_t max)
58 {
59  NS_ASSERT (!m_nexts.empty ());
60  uint32_t next = m_nexts.front ();
61  m_nexts.pop_front ();
62  return next;
63 }
64 
65 int64_t
67 {
68  return 0;
69 }
70 
71 } // namespace ns3
void SetStream(int64_t stream)
Specifies the stream number for this RNG stream.
uint32_t GetInteger(uint32_t min, uint32_t max)
Returns a random unsigned integer from a uniform distribution over the interval [min,max] including both ends.
#define NS_ASSERT(condition)
Definition: assert.h:64
virtual int64_t AssignStreams(int64_t stream)
Ptr< UniformRandomVariable > m_stream
Provides uniform random variables.
Definition: random-stream.h:68
virtual int64_t AssignStreams(int64_t stream)