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Random.h
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Random.h
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/* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright (c) 2013 The plumed team
(see the PEOPLE file at the root of the distribution for a list of names)
See http://www.plumed-code.org for more information.
This file is part of plumed, version 2.0.
plumed is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
plumed is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with plumed. If not, see <http://www.gnu.org/licenses/>.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
#ifndef __PLUMED_tools_Random_h
#define __PLUMED_tools_Random_h
#include <string>
#include <iosfwd>
namespace PLMD{
/// \ingroup TOOLBOX
class Random{
static const int IA=16807,IM=2147483647,IQ=127773,IR=2836,NTAB=32;
static const int NDIV=(1+(IM-1)/NTAB);
static const double EPS;
static const double AM;
static const double RNMX;
static const double fact;
static const std::string noname;
bool incPrec;
bool switchGaussian;
double saveGaussian;
int iy;
int iv[NTAB];
int idum;
std::string name;
public:
Random(const std::string & name=noname);
void setSeed(int idum);
double RandU01();
double U01();
double U01d();
void WriteStateFull(std::ostream &)const;
void ReadStateFull (std::istream &);
void fromString(const std::string & str);
void toString(std::string & str)const;
friend std::ostream & operator<<(std::ostream & out,const Random & rng){
rng.WriteStateFull(out); return out;
}
friend std::istream & operator>>(std::istream & in,Random & rng){
rng.ReadStateFull(in); return in;
}
double Gaussian();
void IncreasedPrecis(bool i){incPrec=i;}
};
}
#endif