// **************************************************************************
//
//    PARALUTION   www.paralution.com
//
//    Copyright (C) 2015  PARALUTION Labs UG (haftungsbeschränkt) & Co. KG
//                        Am Hasensprung 6, 76571 Gaggenau
//                        Handelsregister: Amtsgericht Mannheim, HRA 706051
//                        Vertreten durch:
//                        PARALUTION Labs Verwaltungs UG (haftungsbeschränkt)
//                        Am Hasensprung 6, 76571 Gaggenau
//                        Handelsregister: Amtsgericht Mannheim, HRB 721277
//                        Geschäftsführer: Dimitar Lukarski, Nico Trost
//
//    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 3 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, see <http://www.gnu.org/licenses/>.
//
// **************************************************************************



// PARALUTION version 1.1.0 


#include "../../utils/def.hpp"
#include "mic_matrix_ell_kernel.hpp"
#include "mic_utils.hpp"
#include "../matrix_formats_ind.hpp"

namespace paralution {

template <typename ValueType>
void spmv_ell(const int mic_dev, 
	      const int *col, const ValueType *val,
	      const int nrow,
	      const int ncol,
	      const int max_row,
	      const ValueType *in, ValueType *out) {
  

#pragma offload target(mic:mic_dev)			    \
  in(col:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(val:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(in:length(0) MIC_REUSE MIC_RETAIN)		    \
  in(out:length(0) MIC_REUSE MIC_RETAIN)	    
#pragma omp parallel for
    for (int ai=0; ai<nrow; ++ai) {
      out[ai] = ValueType(0.0);

      for (int n=0; n<max_row; ++n) {

        int aj = ELL_IND(ai, n, nrow, max_row);

        if ((col[aj] >= 0) && (col[aj] < ncol)) {
          out[ai] += val[aj] * in[ col[aj] ];
        } else {
          break;
	}
      }
    }

}

template <typename ValueType>
void spmv_add_ell(const int mic_dev, 
		  const int *col, const ValueType *val,
		  const int nrow,
		  const int ncol,
		  const int max_row,
		  const ValueType scalar,
		  const ValueType *in, ValueType *out) {
  

#pragma offload target(mic:mic_dev)			    \
  in(col:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(val:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(in:length(0) MIC_REUSE MIC_RETAIN)		    \
  in(out:length(0) MIC_REUSE MIC_RETAIN)	    
#pragma omp parallel for
    for (int ai=0; ai<nrow; ++ai) {

      for (int n=0; n<max_row; ++n) {

        int aj = ELL_IND(ai, n, nrow, max_row);

        if ((col[aj] >= 0) && (col[aj] < ncol)) {
          out[ai] += scalar*val[aj] * in[ col[aj] ];
        } else {
          break;
	}
      }
    }

}

template void spmv_ell<double>(const int mic_dev, 
			  const int *col, const double *val,
			  const int nrow,
			  const int ncol,
			  const int max_row,
			  const double *in, double *out);

template void spmv_ell<float>(const int mic_dev, 
			 const int *col, const float *val,
			 const int nrow,
			 const int ncol,
			 const int max_row,
			 const float *in, float *out);

template void spmv_ell<int>(const int mic_dev, 
		       const int *col, const int *val,
		       const int nrow,
		       const int ncol,
		       const int max_row,
		       const int *in, int *out);

template void spmv_add_ell<double>(const int mic_dev, 
			      const int *col, const double *val,
			      const int nrow,
			      const int ncol,
			      const int max_row,
			      const double scalar,
			      const double *in, double *out);

template void spmv_add_ell<float>(const int mic_dev, 
			     const int *col, const float *val,
			     const int nrow,
			     const int ncol,
			     const int max_row,
			     const float scalar,
			     const float *in, float *out);

template void spmv_add_ell<int>(const int mic_dev, 
			   const int *col, const int *val,
			   const int nrow,
			   const int ncol,
			   const int max_row,
			   const int scalar,
			   const int *in, int *out);

}