G4MTRandExponential.icc

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// $Id:$
//
#include <cmath> // for log()

inline G4MTRandExponential::
G4MTRandExponential(CLHEP::HepRandomEngine & anEngine, G4double mean )
  : localEngine(&anEngine), deleteEngine(false), defaultMean(mean) {}

inline G4MTRandExponential::
G4MTRandExponential(CLHEP::HepRandomEngine * anEngine, G4double mean )
  : localEngine(anEngine), deleteEngine(true), defaultMean(mean) {}

//-------------

inline G4double G4MTRandExponential::shoot(CLHEP::HepRandomEngine* anEngine)
{
  return -std::log(anEngine->flat());
}

inline G4double G4MTRandExponential::shoot(CLHEP::HepRandomEngine* anEngine,
                                           G4double mean)
{
  return -std::log(anEngine->flat())*mean;
}

//-------------

inline G4double G4MTRandExponential::fire()
{
  return -std::log(localEngine->flat())*defaultMean;
}

inline G4double G4MTRandExponential::fire(G4double mean)
{
  return -std::log(localEngine->flat())*mean;
}