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118 lines
3.1 KiB
C++
Executable File
118 lines
3.1 KiB
C++
Executable File
//=====================================================
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// File : C_interface.hh
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// Author : L. Plagne <laurent.plagne@edf.fr)>
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// Copyright (C) EDF R&D, lun sep 30 14:23:23 CEST 2002
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//=====================================================
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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#ifndef C_INTERFACE_HH
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#define C_INTERFACE_HH
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#include "f77_interface.hh"
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template<class real>
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class C_interface : public f77_interface_base<real> {
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public :
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typedef typename f77_interface_base<real>::gene_matrix gene_matrix;
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typedef typename f77_interface_base<real>::gene_vector gene_vector;
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static inline std::string name() { return "C"; }
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static inline void matrix_vector_product(const gene_matrix & A, const gene_vector & B, gene_vector & X, int N)
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{
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// for (int i=0;i<N;i++)
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// {
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// real somme = 0.0;
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// for (int j=0;j<N;j++)
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// somme += A[j*N+i] * B[j];
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// X[i] = somme;
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// }
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for (int i=0;i<N;i++)
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X[i] = 0;
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for (int i=0;i<N;i++)
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{
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real tmp = B[i];
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int iN = i*N;
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for (int j=0;j<N;j++)
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X[j] += tmp * A[j+iN];
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}
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}
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static inline void atv_product(const gene_matrix & A, const gene_vector & B, gene_vector & X, int N)
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{
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for (int i=0;i<N;i++)
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{
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int iN = i*N;
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real somme = 0.0;
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for (int j=0;j<N;j++)
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somme += A[iN+j] * B[j];
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X[i] = somme;
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}
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}
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static inline void matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N)
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{
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real somme;
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for (int i=0;i<N;i++){
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for (int j=0;j<N;j++){
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somme=0.0;
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for (int k=0;k<N;k++){
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somme += A[i+k*N] * B[k+j*N];
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}
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X[i+j*N] = somme;
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}
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}
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}
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static inline void ata_product(const gene_matrix & A, gene_matrix & X, int N)
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{
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real somme;
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for (int i=0;i<N;i++){
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for (int j=0;j<N;j++){
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somme=0.0;
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for (int k=0;k<N;k++){
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somme+=A[k+i*N]*A[k+j*N];
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}
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X[i+j*N]=somme;
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}
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}
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}
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static inline void aat_product(const gene_matrix & A, gene_matrix & X, int N){
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real somme;
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for (int i=0;i<N;i++){
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for (int j=0;j<N;j++){
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somme=0.0;
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for (int k=0;k<N;k++){
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somme+=A[i+k*N]*A[j+k*N];
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}
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X[i+j*N] = somme;
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}
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}
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}
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static inline void axpy(real coef, const gene_vector & X, gene_vector & Y, int N){
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for (int i=0;i<N;i++)
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Y[i]+=coef*X[i];
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}
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};
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#endif
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