class RooRealConstant

RooRealConstant provides static functions to create and keep track of RooRealVar constants. Instead of creating such constants by hand (e.g. RooRealVar one("one","one",1)), simply use

  RooRealConstant::value(1.0)

whenever a reference to RooRealVar with constant value 1.0 is needed. RooRealConstant keeps an internal database of previously created RooRealVar objects and will recycle them as appropriate.

Function Members (Methods)

public:

	RooRealConstant()
	RooRealConstant(const RooRealConstant&)
virtual	~RooRealConstant()
static TClass*	Class()
static void	cleanup()
virtual TClass*	IsA() const
RooRealConstant&	operator=(const RooRealConstant&)
static RooConstVar&	removalDummy()
virtual void	ShowMembers(TMemberInspector&)
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
static RooConstVar&	value(Double_t value)

protected:

static void

init()

Data Members

protected:

static RooArgList*	_constDB	List of already instantiated constants
static TIterator*	_constDBIter	Iterator over constants list

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

void cleanup()

 Cleanup function register with RooSentinel for cleanup in atexit()

RooConstVar& value(Double_t value)

 Return a constant value object with given value.
 Return previously created object if available,
 otherwise create a new one on the fly.

RooConstVar& removalDummy()

 Create a dummy node used in node-removal operations

void init()

 One-time initialization of constants database

inline RooRealConstant()

{}

virtual ~RooRealConstant()

{}