A Discrete-Event Network Simulator
API
random-stream.cc
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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 
21 #include "random-stream.h"
22 #include "ns3/assert.h"
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
44 RealRandomStream::AssignStreams (int64_t stream)
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
66 TestRandomStream::AssignStreams (int64_t stream)
67 {
68  return 0;
69 }
70 
71 } //namespace ns3
ns3::RandomStream::~RandomStream
virtual ~RandomStream()
Definition: random-stream.cc:27
ns3::RandomVariableStream::SetStream
void SetStream(int64_t stream)
Specifies the stream number for this RNG stream.
Definition: random-variable-stream.cc:98
min
#define min(a, b)
Definition: 80211b.c:44
NS_ASSERT
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file...
Definition: assert.h:67
ns3::RealRandomStream::AssignStreams
virtual int64_t AssignStreams(int64_t stream)
Assign a fixed random variable stream number to the random variables used by this model...
Definition: random-stream.cc:44
ns3::RealRandomStream::m_stream
Ptr< UniformRandomVariable > m_stream
Provides uniform random variables.
Definition: random-stream.h:81
ns3::RandomVariableStream::GetInteger
virtual uint32_t GetInteger(void)=0
Get the next random value as an integer drawn from the distribution.
ns3::TestRandomStream::AssignStreams
virtual int64_t AssignStreams(int64_t stream)
Assign a fixed random variable stream number to the random variables used by this model...
Definition: random-stream.cc:66
max
#define max(a, b)
Definition: 80211b.c:45
ns3::RealRandomStream::GetNext
virtual uint32_t GetNext(uint32_t min, uint32_t max)
Get integer between min and max (including min and max).
Definition: random-stream.cc:38
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
ns3::TestRandomStream::AddNext
void AddNext(uint32_t v)
Add the given value to the list.
Definition: random-stream.cc:51
ns3::TestRandomStream::m_nexts
std::list< uint32_t > m_nexts
Definition: random-stream.h:109
ns3::TestRandomStream::GetNext
virtual uint32_t GetNext(uint32_t min, uint32_t max)
Get integer between min and max (including min and max).
Definition: random-stream.cc:57