#include "RooStats/HistFactory/PiecewiseInterpolation.h"#include <RooFit/Detail/MathFuncs.h>#include "Riostream.h"#include "TBuffer.h"#include "RooAbsReal.h"#include "RooAbsPdf.h"#include "RooErrorHandler.h"#include "RooArgSet.h"#include "RooRealVar.h"#include "RooMsgService.h"#include "RooNumIntConfig.h"#include "RooTrace.h"#include "RooDataHist.h"#include "RooHistFunc.h"#include <exception>#include <cmath>#include <algorithm>