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