periodic_gaugebc.h

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// -*- C++ -*-
/*! \file
 *  \brief Periodic gauge boundary conditions
 */
 
#ifndef __periodic_gaugebc_h__
#define __periodic_gaugebc_h__
 
#include "gaugebc.h"
#include "actions/gauge/gaugebcs/gaugebc_factory.h"
 
namespace Chroma {
 
  /*! @ingroup gaugebcs */
  namespace PeriodicGaugeBCEnv 
  { 
    extern const std::string name;
    bool registerAll();
  }
 
  //! Periodic gauge
  /*! @ingroup gaugebcs */
  template<typename P, typename Q>
  class PeriodicGaugeBC : public GaugeBC<P,Q>
  {
  public:
 
    //! Only empty constructor
    PeriodicGaugeBC() {}
 
    //! Destructor is automatic
    ~PeriodicGaugeBC() {}
 
    //! Modify U fields in place
    /*! NOP */
    void modify(Q& u) const {}
 
    //! Zero the U fields in place on the masked links
    void zero(P& u) const {}
 
    //! Says if there are non-trivial BC links
    bool nontrivialP() const {return false;}
 
  private:
    //! Hide assignment
    void operator=(const PeriodicGaugeBC<P,Q>&) {}
 
  };
 
} // End namespace Chroma
 
#endif