EvtGen 2.2.0
Monte Carlo generator of particle decays, in particular the weak decays of heavy flavour particles such as B mesons.
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EvtSimpleRandomEngine.cpp
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1
2/***********************************************************************
3* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
4* *
5* This file is part of EvtGen. *
6* *
7* EvtGen is free software: you can redistribute it and/or modify *
8* it under the terms of the GNU General Public License as published by *
9* the Free Software Foundation, either version 3 of the License, or *
10* (at your option) any later version. *
11* *
12* EvtGen is distributed in the hope that it will be useful, *
13* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15* GNU General Public License for more details. *
16* *
17* You should have received a copy of the GNU General Public License *
18* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
19***********************************************************************/
20
22
23#include <iostream>
24#include <math.h>
25#include <stdio.h>
26
28{
29 m_next = m_next * 1103515245 + 123345;
30 unsigned temp = (unsigned)( m_next / 65536 ) % 32768;
31
32 return ( temp + 1.0 ) / 32769.0;
33}
34
35void EvtSimpleRandomEngine::setSeed( unsigned long int seed )
36{
37 m_next = seed;
38}
void setSeed(unsigned long int seed) override