KKMCRandom.cxx

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 1998      Caltech, UCSB
//
// Module: EvtRandom.cc
//
// Description: routines to get random numbers from
//              random number generator.
//
// Modification history:
//
//    DJL/RYD   September 25, 1996           Module created
//
//------------------------------------------------------------------------
//
 
#include "KKMCRandom.h"
 
#include "CLHEP/Random/RanluxEngine.h"
#include <iostream>
using namespace std;
using namespace CLHEP;
 
HepRandomEngine* KKMCRandom::_randomEngine = 0;
 
void KKMCRandom::setRandomEngine( CLHEP::HepRandomEngine* randomEngine ) {
  _randomEngine = randomEngine;
}
 
double KKMCRandom::random() {
 
  if ( _randomEngine == 0 )
  {
    cerr << "No random engine available in "
         << "KKMCRandom::random()." << endl;
  }
 
  return _randomEngine->flat();
}
 
double KKMCRandom::Flat( double min, double max ) {
 
  if ( min > max )
  { cerr << "min>max in KKMCRandom::Flat(" << min << "," << max << ")" << endl; }
 
  return KKMCRandom::random() * ( max - min ) + min;
}
 
double KKMCRandom::Flat( double max ) { return max * KKMCRandom::random(); }
 
double KKMCRandom::Flat() { return KKMCRandom::random(); }
 
void KKMCRandom::FlatArray( double* vect, const int size ) {
  if ( _randomEngine == 0 )
    cout << "Can not get randomEngine pointer in KKMCRandom::FlatArray" << endl;
  else _randomEngine->flatArray( size, vect );
}
 
//----------------
extern "C" {
extern float rlu_( int* ); // jetset74
}
 
float rlu_( int* ) {
  float rdm = KKMCRandom::Flat();
  // std::cout<<"rlu_ = "<<rdm<<std::endl;
  return rdm;
}