SHOGUN  4.0.0
Add.h
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1 /*
2  * Copyright (c) The Shogun Machine Learning Toolbox
3  * Written (w) 2014 Khaled Nasr
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30 
31 #ifndef ADD_IMPL_H_
32 #define ADD_IMPL_H_
33 
34 #include <shogun/lib/config.h>
35 #include <shogun/lib/SGMatrix.h>
36 #include <shogun/lib/SGVector.h>
37 
38 #ifdef HAVE_EIGEN3
40 #endif // HAVE_EIGEN3
41 
42 #ifdef HAVE_VIENNACL
43 #include <shogun/lib/GPUMatrix.h>
44 #include <shogun/lib/GPUVector.h>
45 #include <viennacl/linalg/matrix_operations.hpp>
46 #include <viennacl/linalg/vector_operations.hpp>
47 #endif // HAVE_VIENNACL
48 
49 namespace shogun
50 {
51 
52 namespace linalg
53 {
54 
55 namespace implementation
56 {
57 
59 template <enum Backend, class Matrix>
60 struct add
61 {
63  typedef typename Matrix::Scalar T;
64 
66  static void compute(Matrix A, Matrix B, Matrix C, T alpha, T beta);
67 };
68 
69 #ifdef HAVE_EIGEN3
70 
72 template <> template <class Matrix>
73 struct add<Backend::EIGEN3, Matrix>
74 {
75  typedef typename Matrix::Scalar T;
78 
81  T alpha, T beta)
82  {
83  Eigen::Map<MatrixXt> A_eig = A;
84  Eigen::Map<MatrixXt> B_eig = B;
85  Eigen::Map<MatrixXt> C_eig = C;
86 
87  C_eig = alpha*A_eig + beta*B_eig;
88  }
89 
92  T alpha, T beta)
93  {
94  Eigen::Map<VectorXt> A_eig = A;
95  Eigen::Map<VectorXt> B_eig = B;
96  Eigen::Map<VectorXt> C_eig = C;
97 
98  C_eig = alpha*A_eig + beta*B_eig;
99  }
100 };
101 #endif // HAVE_EIGEN3
102 
103 #ifdef HAVE_VIENNACL
104 
106 template <> template <class Matrix>
107 struct add<Backend::VIENNACL, Matrix>
108 {
109  typedef typename Matrix::Scalar T;
110 
112  static void compute(CGPUMatrix<T> A, CGPUMatrix<T> B, CGPUMatrix<T> C,
113  T alpha, T beta)
114  {
115  C.vcl_matrix() = alpha*A.vcl_matrix() + beta*B.vcl_matrix();
116  }
117 
119  static void compute(CGPUVector<T> A, CGPUVector<T> B, CGPUVector<T> C,
120  T alpha, T beta)
121  {
122  C.vcl_vector() = alpha*A.vcl_vector() + beta*B.vcl_vector();
123  }
124 };
125 
126 #endif // HAVE_VIENNACL
127 
128 }
129 
130 }
131 
132 }
133 #endif // ADD_IMPL_H_
Eigen::Matrix< T, Eigen::Dynamic, Eigen::Dynamic > MatrixXt
Definition: Add.h:76
void add(Matrix A, Matrix B, Matrix C, typename Matrix::Scalar alpha=1.0, typename Matrix::Scalar beta=1.0)
Definition: Core.h:67
Eigen::Matrix< T, Eigen::Dynamic, 1 > VectorXt
Definition: Add.h:77
static void compute(Matrix A, Matrix B, Matrix C, T alpha, T beta)
shogun vector
Definition: Parameter.h:28
static void compute(SGVector< T > A, SGVector< T > B, SGVector< T > C, T alpha, T beta)
Definition: Add.h:91
static void compute(SGMatrix< T > A, SGMatrix< T > B, SGMatrix< T > C, T alpha, T beta)
Definition: Add.h:80
shogun matrix
Definition: Parameter.h:26
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:18

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