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FireRedASR-AED
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//=====================================================
// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
//=====================================================
//
// 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
#ifndef MTL4_INTERFACE_HH
#define MTL4_INTERFACE_HH

#include <boost/numeric/mtl/mtl.hpp>
#include <boost/numeric/mtl/utility/range_generator.hpp>
// #include <boost/numeric/mtl/operation/cholesky.hpp>
#include <vector>

using namespace mtl;

template<class real>
class mtl4_interface {

public :

  typedef real real_type ;

  typedef std::vector<real>  stl_vector;
  typedef std::vector<stl_vector > stl_matrix;

  typedef mtl::dense2D<real, mtl::matrix::parameters<mtl::tag::col_major> > gene_matrix;
  typedef mtl::dense_vector<real>  gene_vector;

  static inline std::string name() { return "mtl4"; }

  static void free_matrix(gene_matrix & A, int N){
    return ;
  }

  static void free_vector(gene_vector & B){
    return ;
  }

  static inline void matrix_from_stl(gene_matrix & A, stl_matrix & A_stl){
    A.change_dim(A_stl[0].size(), A_stl.size());

    for (int j=0; j<A_stl.size() ; j++){
      for (int i=0; i<A_stl[j].size() ; i++){
        A(i,j) = A_stl[j][i];
      }
    }
  }

  static inline void vector_from_stl(gene_vector & B, stl_vector & B_stl){
    B.change_dim(B_stl.size());
    for (int i=0; i<B_stl.size() ; i++){
      B[i] = B_stl[i];
    }
  }

  static inline void vector_to_stl(gene_vector & B, stl_vector & B_stl){
    for (int i=0; i<B_stl.size() ; i++){
      B_stl[i] = B[i];
    }
  }

  static inline void matrix_to_stl(gene_matrix & A, stl_matrix & A_stl){
    int N=A_stl.size();
    for (int j=0;j<N;j++){
      A_stl[j].resize(N);
      for (int i=0;i<N;i++){
        A_stl[j][i] = A(i,j);
      }
    }
  }

  static inline void matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N){
    X = (A*B);
//     morton_dense<double, doppled_64_row_mask> C(N,N);
//     C = B;
//     X = (A*C);
  }

  static inline void transposed_matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N){
    X = (trans(A)*trans(B));
  }

//   static inline void ata_product(const gene_matrix & A, gene_matrix & X, int N){
//     X = (trans(A)*A);
//   }

  static inline void aat_product(const gene_matrix & A, gene_matrix & X, int N){
    X = (A*trans(A));
  }

  static inline void matrix_vector_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
    X = (A*B);
  }

  static inline void atv_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
    X = (trans(A)*B);
  }

  static inline void axpy(const real coef, const gene_vector & X, gene_vector & Y, int N){
    Y += coef * X;
  }

  static inline void axpby(real a, const gene_vector & X, real b, gene_vector & Y, int N){
    Y = a*X + b*Y;
  }

//   static inline void cholesky(const gene_matrix & X, gene_matrix & C, int N){
//     C = X;
//     recursive_cholesky(C);
//   }

//   static inline void lu_decomp(const gene_matrix & X, gene_matrix & R, int N){
//     R = X;
//     std::vector<int> ipvt(N);
//     lu_factor(R, ipvt);
//   }

  static inline void trisolve_lower(const gene_matrix & L, const gene_vector& B, gene_vector & X, int N){
    X = lower_trisolve(L, B);
  }

  static inline void copy_matrix(const gene_matrix & source, gene_matrix & cible, int N){
    cible = source;
  }

  static inline void copy_vector(const gene_vector & source, gene_vector & cible, int N){
    cible = source;
  }

};

#endif