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1 //=====================================================
2 // File   :  blitz_interface.hh
3 // Author :  L. Plagne <laurent.plagne@edf.fr)>
4 // Copyright (C) EDF R&D,  lun sep 30 14:23:30 CEST 2002
5 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
6 //=====================================================
7 //
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License
10 // as published by the Free Software Foundation; either version 2
11 // of the License, or (at your option) any later version.
12 //
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20 //
21 #ifndef BLITZ_INTERFACE_HH
22 #define BLITZ_INTERFACE_HH
23 
24 #include <blitz/blitz.h>
25 #include <blitz/array.h>
26 #include <blitz/vector-et.h>
27 #include <blitz/vecwhere.h>
28 #include <blitz/matrix.h>
29 #include <vector>
30 
31 BZ_USING_NAMESPACE(blitz)
32 
33 template<class real>
34 class blitz_interface{
35 
36 public :
37 
38   typedef real real_type ;
39 
40   typedef std::vector<real>  stl_vector;
41   typedef std::vector<stl_vector > stl_matrix;
42 
43   typedef blitz::Array<real, 2>  gene_matrix;
44   typedef blitz::Array<real, 1>  gene_vector;
45 //   typedef blitz::Matrix<real, blitz::ColumnMajor>  gene_matrix;
46 //   typedef blitz::Vector<real> gene_vector;
47 
name()48   static inline std::string name() { return "blitz"; }
49 
free_matrix(gene_matrix & A,int N)50   static void free_matrix(gene_matrix & A, int N){}
51 
free_vector(gene_vector & B)52   static void free_vector(gene_vector & B){}
53 
matrix_from_stl(gene_matrix & A,stl_matrix & A_stl)54   static inline void matrix_from_stl(gene_matrix & A, stl_matrix & A_stl){
55     A.resize(A_stl[0].size(),A_stl.size());
56     for (int j=0; j<A_stl.size() ; j++){
57       for (int i=0; i<A_stl[j].size() ; i++){
58         A(i,j)=A_stl[j][i];
59       }
60     }
61   }
62 
vector_from_stl(gene_vector & B,stl_vector & B_stl)63   static inline void vector_from_stl(gene_vector & B, stl_vector & B_stl){
64     B.resize(B_stl.size());
65     for (int i=0; i<B_stl.size() ; i++){
66       B(i)=B_stl[i];
67     }
68   }
69 
vector_to_stl(gene_vector & B,stl_vector & B_stl)70   static inline void vector_to_stl(gene_vector & B, stl_vector & B_stl){
71     for (int i=0; i<B_stl.size() ; i++){
72       B_stl[i]=B(i);
73     }
74   }
75 
matrix_to_stl(gene_matrix & A,stl_matrix & A_stl)76   static inline void matrix_to_stl(gene_matrix & A, stl_matrix & A_stl){
77     int N=A_stl.size();
78     for (int j=0;j<N;j++){
79       A_stl[j].resize(N);
80       for (int i=0;i<N;i++)
81         A_stl[j][i] = A(i,j);
82     }
83   }
84 
matrix_matrix_product(const gene_matrix & A,const gene_matrix & B,gene_matrix & X,int N)85   static inline void matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N)
86   {
87     firstIndex i;
88     secondIndex j;
89     thirdIndex k;
90     X = sum(A(i,k) * B(k,j), k);
91   }
92 
ata_product(const gene_matrix & A,gene_matrix & X,int N)93   static inline void ata_product(const gene_matrix & A, gene_matrix & X, int N)
94   {
95     firstIndex i;
96     secondIndex j;
97     thirdIndex k;
98     X = sum(A(k,i) * A(k,j), k);
99   }
100 
aat_product(const gene_matrix & A,gene_matrix & X,int N)101   static inline void aat_product(const gene_matrix & A, gene_matrix & X, int N)
102   {
103     firstIndex i;
104     secondIndex j;
105     thirdIndex k;
106     X = sum(A(i,k) * A(j,k), k);
107   }
108 
matrix_vector_product(gene_matrix & A,gene_vector & B,gene_vector & X,int N)109   static inline void matrix_vector_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N)
110   {
111     firstIndex i;
112     secondIndex j;
113     X = sum(A(i,j)*B(j),j);
114   }
115 
atv_product(gene_matrix & A,gene_vector & B,gene_vector & X,int N)116   static inline void atv_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N)
117   {
118     firstIndex i;
119     secondIndex j;
120     X = sum(A(j,i) * B(j),j);
121   }
122 
axpy(const real coef,const gene_vector & X,gene_vector & Y,int N)123   static inline void axpy(const real coef, const gene_vector & X, gene_vector & Y, int N)
124   {
125     firstIndex i;
126     Y = Y(i) + coef * X(i);
127     //Y += coef * X;
128   }
129 
copy_matrix(const gene_matrix & source,gene_matrix & cible,int N)130   static inline void copy_matrix(const gene_matrix & source, gene_matrix & cible, int N){
131     cible = source;
132     //cible.template operator=<gene_matrix>(source);
133 //     for (int i=0;i<N;i++){
134 //       for (int j=0;j<N;j++){
135 //         cible(i,j)=source(i,j);
136 //       }
137 //     }
138   }
139 
copy_vector(const gene_vector & source,gene_vector & cible,int N)140   static inline void copy_vector(const gene_vector & source, gene_vector & cible, int N){
141     //cible.template operator=<gene_vector>(source);
142     cible = source;
143   }
144 
145 };
146 
147 #endif
148