class RooRealVar: public RooAbsRealLValue

 Default constructor

 Constructor with value and unit

 Constructor with range and unit. Initial value is center of range

 Constructor with value, range and unit

 Copy Constructor

 Destructor
   cout << "RooRealVar::dtor(" << this << ")" << endl ;

 Return value of variable

 Set value of variable to 'value'. If 'value' is outside
 range of object, clip value into range

 Set value of variable to 'value'. If 'value' is outside
 range named 'rangeName' of object, clip value into that range

 Return a RooAbsRealLValue representing the error associated
 with this variable. The callers takes ownership of the
 return object

 Returns true if variable has a binning with 'name'

 Return binning definition with name. If binning with 'name' is not found it is created
 on the fly as a clone of the default binning if createOnTheFly is true, otherwise
 a reference to the default binning is returned. If verbose is true a message
 is printed if a binning is created on the gly

 Return binning definition with name. If binning with 'name' is not found it is created
 on the fly as a clone of the default binning if createOnTheFly is true, otherwise
 a reference to the default binning is returned. If verbose is true a message
 is printed if a binning is created on the gly

 Get a list of all binning names. An empty name implies the default binning and
 a NULL pointer should be passed to getBinning in this case.

 Add given binning under name 'name' with this variable. If name is null
 the binning is installed as the default binning

 Set minimum of name range to given value. If name is null
 minimum of default range is set

 Set maximum of name range to given value. If name is null
 maximum of default range is set

 Set range named 'name to [min,max]. If name is null
 range of default range is adjusted. If no range with
 'name' exists it is created on the fly

 Create or modify a parameterized range named 'name' that has external functions
 min and max parameterizing its boundaries.

 Read object contents from given stream

 Write object contents to given stream

 Print value of variable

 Print extras of variable: (asymmetric) error, constant flag, limits and binning

 Mapping of Print() option string to RooPrintable contents specifications

 Detailed printing interface

 Format contents of RooRealVar for pretty printing on RooPlot
 parameter boxes. This function processes the named arguments
 taken by paramOn() and translates them to an option string
 parsed by RooRealVar::format(Int_t sigDigits, const char *options)

 Format numeric value of RooRealVar and its error in a variety of ways

 To control what is shown use the following options
 N = show name
 H = hide value
 E = show error
 A = show asymmetric error instead of parabolic error (if available)
 U = show unit

 To control how it is shown use these options
 L = TLatex mode
 X = Latex mode
 Y = Latex table mode ( '=' replaced by '&' )
 V = Make name \verbatim in Latex mode
 P = use error to control shown precision
 F = force fixed precision

 Utility to calculate number of decimals to show
 based on magnitude of error

 Overload RooAbsReal::attachToTree to also attach
 branches for errors  and/or asymmetric errors
 attribute StoreError and/or StoreAsymError are set

 Overload RooAbsReal::attachToTree to also attach
 branches for errors  and/or asymmetric errors
 attribute StoreError and/or StoreAsymError are set

 Overload RooAbsReal::fillTreeBranch to also
 fill tree branches with (asymmetric) errors
 if requested.

 Copy the cached value of another RooAbsArg to our cache
 Warning: This function copies the cached values of source,
          it is the callers responsibility to make sure the cache is clean

 Stream an object of class RooRealVar.

 No longer used?

 If true, contents of RooRealVars will be printed in scientific notation

 Set number of digits to show when printing RooRealVars

 Set/get finite fit range limits

 Set infinite fit range limits

 We implement a fundamental type of AbsArg that can be stored in a dataset

 Force to be a leaf-node of any expression tree, even if we have (shape) servers