gmm_interface.hh revision c981c48f5bc9aefeffc0bcb0cc3934c2fae179dd 
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 GMM_INTERFACE_HH
19#define GMM_INTERFACE_HH
20
21#include <gmm/gmm.h>
22#include <vector>
23
24using namespace gmm;
25
26template<class real>
27class gmm_interface {
28
29public :
30
31  typedef real real_type ;
32
33  typedef std::vector<real>  stl_vector;
34  typedef std::vector<stl_vector > stl_matrix;
35
36  typedef gmm::dense_matrix<real> gene_matrix;
37  typedef stl_vector gene_vector;
38
39  static inline std::string name( void )
40  {
41    return "gmm";
42  }
43
44  static void free_matrix(gene_matrix & A, int N){
45    return ;
46  }
47
48  static void free_vector(gene_vector & B){
49    return ;
50  }
51
52  static inline void matrix_from_stl(gene_matrix & A, stl_matrix & A_stl){
53    A.resize(A_stl[0].size(),A_stl.size());
54
55    for (int j=0; j<A_stl.size() ; j++){
56      for (int i=0; i<A_stl[j].size() ; i++){
57        A(i,j) = A_stl[j][i];
58      }
59    }
60  }
61
62  static inline void vector_from_stl(gene_vector & B, stl_vector & B_stl){
63    B = B_stl;
64  }
65
66  static inline void vector_to_stl(gene_vector & B, stl_vector & B_stl){
67    B_stl = B;
68  }
69
70  static inline void matrix_to_stl(gene_matrix & A, stl_matrix & A_stl){
71    int N=A_stl.size();
72
73    for (int j=0;j<N;j++){
74      A_stl[j].resize(N);
75      for (int i=0;i<N;i++){
76        A_stl[j][i] = A(i,j);
77      }
78    }
79  }
80
81  static inline void matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N){
82    gmm::mult(A,B, X);
83  }
84
85  static inline void transposed_matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N){
86    gmm::mult(gmm::transposed(A),gmm::transposed(B), X);
87  }
88
89  static inline void ata_product(const gene_matrix & A, gene_matrix & X, int N){
90    gmm::mult(gmm::transposed(A),A, X);
91  }
92
93  static inline void aat_product(const gene_matrix & A, gene_matrix & X, int N){
94    gmm::mult(A,gmm::transposed(A), X);
95  }
96
97  static inline void matrix_vector_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
98    gmm::mult(A,B,X);
99  }
100
101  static inline void atv_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
102    gmm::mult(gmm::transposed(A),B,X);
103  }
104
105  static inline void axpy(const real coef, const gene_vector & X, gene_vector & Y, int N){
106    gmm::add(gmm::scaled(X,coef), Y);
107  }
108
109  static inline void axpby(real a, const gene_vector & X, real b, gene_vector & Y, int N){
110    gmm::add(gmm::scaled(X,a), gmm::scaled(Y,b), Y);
111  }
112
113  static inline void copy_matrix(const gene_matrix & source, gene_matrix & cible, int N){
114    gmm::copy(source,cible);
115  }
116
117  static inline void copy_vector(const gene_vector & source, gene_vector & cible, int N){
118    gmm::copy(source,cible);
119  }
120
121  static inline void trisolve_lower(const gene_matrix & L, const gene_vector& B, gene_vector & X, int N){
122    gmm::copy(B,X);
123    gmm::lower_tri_solve(L, X, false);
124  }
125
126  static inline void partial_lu_decomp(const gene_matrix & X, gene_matrix & R, int N){
127    gmm::copy(X,R);
128    std::vector<int> ipvt(N);
129    gmm::lu_factor(R, ipvt);
130  }
131
132  static inline void hessenberg(const gene_matrix & X, gene_matrix & R, int N){
133    gmm::copy(X,R);
134    gmm::Hessenberg_reduction(R,X,false);
135  }
136
137  static inline void tridiagonalization(const gene_matrix & X, gene_matrix & R, int N){
138    gmm::copy(X,R);
139    gmm::Householder_tridiagonalization(R,X,false);
140  }
141
142};
143
144#endif
145