EepipiRandom.cxx

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//--------------------------------------------------------------------------
//
// Module: EepipiRandom.h
//
// Description: routines to unify random numbers using Bes random service
//
// Modification history:
//
//   Ping RG   Feb. 16, 2009           Module created
//
//------------------------------------------------------------------------
//
 
#include "EepipiRandom.h"
 
#include <iostream>
using namespace std;
using namespace CLHEP;
 
HepRandomEngine* EepipiRandom::_randomEngine = 0;
 
void EepipiRandom::setRandomEngine( CLHEP::HepRandomEngine* randomEngine ) {
  _randomEngine = randomEngine;
}
 
double EepipiRandom::random() {
 
  if ( _randomEngine == 0 )
  {
    cerr << "No random engine available in "
         << "EepipiRandom::random()." << endl;
  }
  return _randomEngine->flat();
}
 
double EepipiRandom::Flat( double min, double max ) {
 
  if ( min > max )
  { cerr << "min>max in EepipiRandom::Flat(" << min << "," << max << ")" << endl; }
 
  return EepipiRandom::random() * ( max - min ) + min;
}
 
double EepipiRandom::Flat( double max ) { return max * EepipiRandom::random(); }
 
double EepipiRandom::Flat() { return EepipiRandom::random(); }
 
void EepipiRandom::FlatArray( double* vect, const int size ) {
  if ( _randomEngine == 0 )
    cout << "Can not get randomEngine pointer in EepipiRandom::FlatArray" << endl;
  else _randomEngine->flatArray( size, vect );
}