RndmEngine.cpp

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* (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations *
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* copied verbatim in the file "LICENSE".                                            *
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//====================================================================
//  Random Engine implementation
//--------------------------------------------------------------------
//
//  Package    : Gaudi/RndmGen ( The LHCb Offline System)
//  Author     : M.Frank
//  History    :
// +---------+----------------------------------------------+---------
// |    Date |                 Comment                      | Who
// +---------+----------------------------------------------+---------
// | 29/10/99| Initial version                              | MF
// +---------+----------------------------------------------+---------
//
//====================================================================
#define GAUDI_RANDOMGENSVC_RndmEngine_CPP

// STL include files
#include <cfloat>

// Framework include files
#include "GaudiKernel/DataObject.h"
#include "GaudiKernel/IDataProviderSvc.h"
#include "GaudiKernel/IIncidentSvc.h"
#include "GaudiKernel/IMessageSvc.h"
#include "GaudiKernel/IOpaqueAddress.h"
#include "GaudiKernel/ISvcLocator.h"
#include "GaudiKernel/MsgStream.h"
#include "RndmEngine.h"

StatusCode RndmEngine::initialize() {
  StatusCode status = Service::initialize();
  if ( status.isSuccess() ) status = setProperties();
  return status;
}

StreamBuffer& RndmEngine::serialize( StreamBuffer& str ) { return str; }

StreamBuffer& RndmEngine::serialize( StreamBuffer& str ) const { return str; }

double RndmEngine::rndm() const { return DBL_MAX; }

StatusCode RndmEngine::rndmArray( std::vector<double>& array, long howmany, long start ) const {
  array.resize( start + howmany );
  std::generate_n( std::next( array.begin(), start ), howmany, [&]() { return this->rndm(); } );
  return StatusCode::SUCCESS;
}