#include <TFile.h>
#include <TTree.h>

#include <iostream>

void gendftest(uint32_t nevents,uint32_t nclusters)
{
  TFile *fh=TFile::Open("test.root","recreate");
  fh->cd();

  TTree *t=new TTree("tree","tree");
  t->SetAutoFlush(nevents/nclusters);

  uint32_t x=0;
  t->Branch("v",&x,"v/i");

  for(x=0;x<nevents;x++)
    {
      t->Fill();
      if(x%100000==0)
	std::cout << x << std::endl;
    }

  fh->Write();
  fh->Close();
}