RooDouble.cxx

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/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 * @(#)root/roofitcore:$Id$
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2005, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/
 
/**
\file RooDouble.cxx
\class RooDouble
\ingroup Roofitcore
 
Minimal implementation of a TObject holding a double value.
**/
 
#include "RooDouble.h"
 
#include <sstream>
#include <string>
 
 
 
////////////////////////////////////////////////////////////////////////////////
 
RooDouble::RooDouble(double value) : _value(value)
{
   std::stringstream ss;
   ss << value;
   SetName(ss.str().c_str());
}
 
 
////////////////////////////////////////////////////////////////////////////////
/// Implement comparison to other TObjects that are also RooDouble
/// to facilitate sorting of RooDoubles in a ROOT container.
 
Int_t RooDouble::Compare(const TObject* other) const
{
  const RooDouble* otherD = dynamic_cast<const RooDouble*>(other) ;
  if (!otherD) return 0 ;
  return (_value>otherD->_value) ? 1 : -1 ;
}