//=====================================================
// File   :  INTEL_BLAS_interface.hh
// Author :  L. Plagne <laurent.plagne@edf.fr)>
// Copyright (C) EDF R&D,  lun sep 30 14:23:29 CEST 2002
//=====================================================
//
// 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 INTEL_BLAS_PRODUIT_MATRICE_VECTEUR_HH
#define INTEL_BLAS_PRODUIT_MATRICE_VECTEUR_HH
#include "f77_interface.hh"
extern "C"
{
#include "mkl_cblas.h"
}

template<class real>
class INTEL_BLAS_interface : public f77_interface_base<real>
{
public :

  typedef typename f77_interface_base<real>::gene_matrix gene_matrix;
  typedef typename f77_interface_base<real>::gene_vector gene_vector;

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

  static  inline void matrix_vector_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N) {
    cblas_dgemv(CblasColMajor,CblasNoTrans,N,N,1.0,A,N,B,1,0.0,X,1);
  }

  static  inline void matrix_matrix_product(gene_matrix & A, gene_matrix & B, gene_matrix & X, int N) {
    cblas_dgemm(CblasColMajor,CblasNoTrans,CblasNoTrans,N,N,N,1.0,A,N,B,N,0.0,X,N);
  }

  static  inline void ata_product(gene_matrix & A, gene_matrix & X, int N) {
    cblas_dgemm(CblasColMajor,CblasTrans,CblasNoTrans,N,N,N,1.0,A,N,A,N,0.0,X,N);
  }

  static  inline void aat_product(gene_matrix & A, gene_matrix & X, int N) {
    cblas_dgemm(CblasColMajor,CblasNoTrans,CblasTrans,N,N,N,1.0,A,N,A,N,0.0,X,N);
  }

  static  inline void axpy(real coef, const gene_vector & X, gene_vector & Y, int N) {
    cblas_daxpy(N,coef,X,1,Y,1);
  }

};

template<>
class INTEL_BLAS_interface<float> : public f77_interface_base<float>
{
public :

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

  static  inline void matrix_vector_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N) {
    //    cblas_sgemv(CblasNoTrans,N,N,1.0,A,N,B,1,0.0,X,1);
    cblas_sgemv(CblasColMajor,CblasNoTrans,N,N,1.0,A,N,B,1,0.0,X,1);

  }

  static  inline void matrix_matrix_product(gene_matrix & A, gene_matrix & B, gene_matrix & X, int N) {
    cblas_sgemm(CblasColMajor,CblasNoTrans,CblasNoTrans,N,N,N,1.0,A,N,B,N,0.0,X,N);
  }

  static  inline void ata_product(gene_matrix & A, gene_matrix & X, int N) {
    cblas_sgemm(CblasColMajor,CblasTrans,CblasNoTrans,N,N,N,1.0,A,N,A,N,0.0,X,N);
  }

  static  inline void aat_product(gene_matrix & A, gene_matrix & X, int N) {
    cblas_sgemm(CblasColMajor,CblasNoTrans,CblasTrans,N,N,N,1.0,A,N,A,N,0.0,X,N);
  }

  static  inline void axpy(float coef, const gene_vector & X, gene_vector & Y, int N) {
    cblas_saxpy(N,coef,X,1,Y,1);
  }

};


#endif