/*************************************************************************************

    Grid physics library, www.github.com/paboyle/Grid 

    Source file: ./lib/lattice/Lattice_unary.h

    Copyright (C) 2015

Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: neo <cossu@post.kek.jp>
Author: paboyle <paboyle@ph.ed.ac.uk>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

    See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/*  END LEGAL */
#ifndef GRID_LATTICE_UNARY_H
#define GRID_LATTICE_UNARY_H

NAMESPACE_BEGIN(Grid);

template<class obj> Lattice<obj> pow(const Lattice<obj> &rhs_i,RealD y){
  Lattice<obj> ret_i(rhs_i.Grid());
  autoView( rhs, rhs_i, AcceleratorRead);
  autoView( ret, ret_i, AcceleratorWrite);
  ret.Checkerboard() = rhs.Checkerboard();
  accelerator_for(ss,rhs.size(),1,{
      ret[ss]=pow(rhs[ss],y);
  });
  return ret_i;
}
template<class obj> Lattice<obj> mod(const Lattice<obj> &rhs_i,Integer y){
  Lattice<obj> ret_i(rhs_i.Grid());
  autoView( rhs , rhs_i, AcceleratorRead);
  autoView( ret , ret_i, AcceleratorWrite);
  ret.Checkerboard() = rhs.Checkerboard();
  accelerator_for(ss,rhs.size(),obj::Nsimd(),{
    coalescedWrite(ret[ss],mod(rhs(ss),y));
  });
  return ret_i;
}

template<class obj> Lattice<obj> div(const Lattice<obj> &rhs_i,Integer y){
  Lattice<obj> ret_i(rhs_i.Grid());
  autoView( ret , ret_i, AcceleratorWrite);
  autoView( rhs , rhs_i, AcceleratorRead);
  ret.Checkerboard() = rhs_i.Checkerboard();
  accelerator_for(ss,rhs.size(),obj::Nsimd(),{
    coalescedWrite(ret[ss],div(rhs(ss),y));
  });
  return ret_i;
}

template<class obj> Lattice<obj> expMat(const Lattice<obj> &rhs_i, RealD alpha, Integer Nexp = DEFAULT_MAT_EXP){
  Lattice<obj> ret_i(rhs_i.Grid());
  autoView( rhs , rhs_i, AcceleratorRead);
  autoView( ret , ret_i, AcceleratorWrite);
  ret.Checkerboard() = rhs.Checkerboard();
  accelerator_for(ss,rhs.size(),obj::Nsimd(),{
    coalescedWrite(ret[ss],Exponentiate(rhs(ss),alpha, Nexp));
  });
  return ret_i;
}

NAMESPACE_END(Grid);
#endif
