TensorQ.h

/*
   CheMPS2: a spin-adapted implementation of DMRG for ab initio quantum chemistry
   Copyright (C) 2013-2016 Sebastian Wouters

   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.
*/

#ifndef TENSORQ_CHEMPS2_H
#define TENSORQ_CHEMPS2_H

#include "TensorT.h"
#include "TensorL.h"
#include "TensorOperator.h"
#include "TensorF0.h"
#include "TensorF1.h"
#include "SyBookkeeper.h"
#include "Problem.h"

namespace CheMPS2{
   class TensorQ : public TensorOperator{

      public:


         TensorQ(const int boundary_index, const int Idiff, const bool moving_right, const SyBookkeeper * denBK, const Problem * Prob, const int site);

         virtual ~TensorQ();
         

         void AddTermSimple(TensorT * denT);
         

         void AddTermsL(TensorL ** Ltensors, TensorT * denT, double * workmem, double * workmem2);
         

         void AddTermsAB(TensorOperator * denA, TensorOperator * denB, TensorT * denT, double * workmem, double * workmem2);
         

         void AddTermsCD(TensorOperator * denC, TensorOperator * denD, TensorT * denT, double * workmem, double * workmem2);
         
      private:
      
         const Problem * Prob;
         
         int site;
         
         //Internal stuff
         void AddTermSimpleRight(TensorT * denT);
         void AddTermSimpleLeft(TensorT * denT);
         void AddTermsLRight(TensorL ** Ltensors, TensorT * denT, double * workmem, double * workmem2);
         void AddTermsLLeft(TensorL ** Ltensors, TensorT * denT, double * workmem, double * workmem2);
         void AddTermsABRight(TensorOperator * denA, TensorOperator * denB, TensorT * denT, double * workmem, double * workmem2);
         void AddTermsABLeft(TensorOperator * denA, TensorOperator * denB, TensorT * denT, double * workmem, double * workmem2);
         void AddTermsCDRight(TensorOperator * denC, TensorOperator * denD, TensorT * denT, double * workmem, double * workmem2);
         void AddTermsCDLeft(TensorOperator * denC, TensorOperator * denD, TensorT * denT, double * workmem, double * workmem2);
         
   };
}

#endif