geant4/source/global/HEPRandom/include/G4MTRandFlat.icc

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// $Id:$
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inline G4MTRandFlat::
G4MTRandFlat(CLHEP::HepRandomEngine & anEngine)
: firstUnusedBit(0), localEngine(&anEngine), deleteEngine(false), 
  defaultA(0.0), defaultB(1.0) {}

inline G4MTRandFlat::
G4MTRandFlat(CLHEP::HepRandomEngine & anEngine, G4double width )
: firstUnusedBit(0), localEngine(&anEngine), deleteEngine(false), 
  defaultA(0.0), defaultB(width) {}

inline G4MTRandFlat::
G4MTRandFlat(CLHEP::HepRandomEngine & anEngine, G4double a, G4double b )
: firstUnusedBit(0), localEngine(&anEngine), deleteEngine(false), 
  defaultA(a), defaultB(b) {}

inline G4MTRandFlat::
G4MTRandFlat(CLHEP::HepRandomEngine * anEngine)
: firstUnusedBit(0), localEngine(anEngine), deleteEngine(true), 
  defaultA(0.0), defaultB(1.0) {}

inline G4MTRandFlat::
G4MTRandFlat(CLHEP::HepRandomEngine * anEngine, G4double width )
: firstUnusedBit(0), localEngine(anEngine), deleteEngine(true), 
  defaultA(0.0), defaultB(width) {}

inline G4MTRandFlat::
G4MTRandFlat(CLHEP::HepRandomEngine * anEngine, G4double a, G4double b )
: firstUnusedBit(0), localEngine(anEngine), deleteEngine(true), 
  defaultA(a), defaultB(b) {}

inline G4double G4MTRandFlat::shoot(G4double a, G4double b)
{
  return (b-a)* shoot() + a;
}

inline G4double G4MTRandFlat::shoot(G4double width)
{
  return width * shoot();
}

inline G4long G4MTRandFlat::shootInt(G4long n)
{
  return G4long(shoot()*G4double(n));
}

inline G4long G4MTRandFlat::shootInt(G4long mLong, G4long nLong)
{
  return G4long(shoot()*G4double(nLong-mLong)) + mLong;
}

inline void G4MTRandFlat::shootBits()
{
  const G4double factor= 2.0*MSB; // this should fit into a double! 
  staticFirstUnusedBit= MSB;
  staticRandomInt= (unsigned long)(factor*shoot());  
}

inline G4int G4MTRandFlat::shootBit()
{
  if (staticFirstUnusedBit==0)
    shootBits();
  unsigned long temp= staticFirstUnusedBit&staticRandomInt;
  staticFirstUnusedBit>>= 1;
  return temp!=0;   
}

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

inline G4double G4MTRandFlat::shoot(CLHEP::HepRandomEngine* anEngine)
{
  return anEngine->flat();
}


inline G4double G4MTRandFlat::shoot(CLHEP::HepRandomEngine* anEngine,
                                    G4double a, G4double b)
{
  return (b-a)* anEngine->flat() + a;
}

inline G4double G4MTRandFlat::shoot(CLHEP::HepRandomEngine* anEngine,
                                    G4double width)
{
  return width * anEngine->flat();
}

inline G4long G4MTRandFlat::shootInt(CLHEP::HepRandomEngine* anEngine,
                                     G4long n)
{
  return G4long(anEngine->flat()*G4double(n));
}

inline G4long G4MTRandFlat::shootInt(CLHEP::HepRandomEngine* anEngine,
                                     G4long mparam, G4long n)
{
  return G4long(G4double(n-mparam)*anEngine->flat()) + mparam;
}

inline void G4MTRandFlat::shootArray(CLHEP::HepRandomEngine* anEngine,
                                     const G4int size, G4double* vect)
{
  anEngine->flatArray(size,vect);
}

inline void G4MTRandFlat::shootBits(CLHEP::HepRandomEngine* engine)
{
  const G4double factor= 2.0*MSB; // this should fit into a double! 
  staticFirstUnusedBit= MSB;
  staticRandomInt= (unsigned long)(factor*shoot(engine));  
}

inline G4int G4MTRandFlat::shootBit(CLHEP::HepRandomEngine* engine)
{
  if (staticFirstUnusedBit==0)
    shootBits(engine);
  unsigned long temp= staticFirstUnusedBit&staticRandomInt;
  staticFirstUnusedBit>>= 1;
  return temp!=0;   
}

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

inline G4double G4MTRandFlat::fire()
{
  return (defaultB-defaultA)*localEngine->flat()+defaultA;
}

inline G4double G4MTRandFlat::fire(G4double a, G4double b)
{
  return (b-a)* localEngine->flat() + a;
}

inline G4double G4MTRandFlat::fire(G4double width)
{
  return width * localEngine->flat();
}

inline G4long G4MTRandFlat::fireInt(G4long n)
{
  return G4long(localEngine->flat()*G4double(n));
}

inline G4long G4MTRandFlat::fireInt(G4long mparam, G4long n)
{
  return G4long(localEngine->flat()*G4double(n-mparam)) + mparam;
}

inline void G4MTRandFlat::fireBits()
{
  const G4double factor= 2.0*MSB; // this should fit into a double! 
  firstUnusedBit= MSB;
  randomInt= (unsigned long)(factor*localEngine->flat());  
}

inline G4int G4MTRandFlat::fireBit()
{
  if (firstUnusedBit==0)
    fireBits();
  unsigned long temp= firstUnusedBit&randomInt;
  firstUnusedBit>>= 1;
  return temp!=0;   
}