Stokhos Package Browser (Single Doxygen Collection)  Version of the Day
Kokkos_InnerProductSpaceTraits_MP_Vector.hpp
Go to the documentation of this file.
1 // @HEADER
2 // ***********************************************************************
3 //
4 // Stokhos Package
5 // Copyright (2009) Sandia Corporation
6 //
7 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
8 // license for use of this work by or on behalf of the U.S. Government.
9 //
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions are
12 // met:
13 //
14 // 1. Redistributions of source code must retain the above copyright
15 // notice, this list of conditions and the following disclaimer.
16 //
17 // 2. Redistributions in binary form must reproduce the above copyright
18 // notice, this list of conditions and the following disclaimer in the
19 // documentation and/or other materials provided with the distribution.
20 //
21 // 3. Neither the name of the Corporation nor the names of the
22 // contributors may be used to endorse or promote products derived from
23 // this software without specific prior written permission.
24 //
25 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
26 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
29 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 //
37 // Questions? Contact Eric T. Phipps (etphipp@sandia.gov).
38 //
39 // ***********************************************************************
40 // @HEADER
41 
42 #ifndef KOKKOS_INNER_PRODUCT_SPACE_TRAITS_MP_VECTOR_HPP
43 #define KOKKOS_INNER_PRODUCT_SPACE_TRAITS_MP_VECTOR_HPP
44 
45 #include "Sacado_ConfigDefs.h"
46 #if defined(HAVE_STOKHOS_ENSEMBLE_REDUCT)
47 
48 #include "Sacado_MP_Vector.hpp"
49 #include "Kokkos_InnerProductSpaceTraits.hpp"
51 
52 //----------------------------------------------------------------------------
53 // Specializations of Kokkos::InnerProductSpaceTraits for Sacado::MP::Vector
54 // scalar type
55 //----------------------------------------------------------------------------
56 
57 namespace Kokkos {
58 namespace Details {
59 
60 template <typename S>
61 class InnerProductSpaceTraits< Sacado::MP::Vector<S> > {
62 public:
63  typedef Sacado::MP::Vector<S> val_type;
64 
65  typedef typename val_type::value_type base_value_type;
66  typedef typename val_type::ordinal_type ordinal_type;
67  typedef InnerProductSpaceTraits<base_value_type> BIT;
68  typedef typename BIT::dot_type base_dot_type;
69 
70  typedef typename ArithTraits<val_type>::mag_type mag_type;
71  typedef base_dot_type dot_type;
72 
73  static KOKKOS_FORCEINLINE_FUNCTION
74  mag_type norm (const val_type& x) {
75  //return ArithTraits<val_type>::abs (x);
76  const ordinal_type sz = x.size();
77  mag_type nrm = mag_type(0);
78  for (ordinal_type i=0; i<sz; ++i) {
79  const mag_type n = BIT::norm( x.fastAccessCoeff(i) );
80  nrm += n*n;
81  }
82  return std::sqrt(nrm);
83  }
84 
85  static KOKKOS_FORCEINLINE_FUNCTION
86  dot_type dot (const val_type& x, const val_type& y) {
87  const ordinal_type xsz = x.size();
88  const ordinal_type ysz = y.size();
89  const ordinal_type sz = xsz > ysz ? xsz : ysz;
90 
91  dot_type r = dot_type(0);
92  if (x.hasFastAccess(sz) && y.hasFastAccess(sz))
93  for (ordinal_type i=0; i<sz; ++i)
94  r += BIT::dot( x.fastAccessCoeff(i), y.fastAccessCoeff(i) );
95  else
96  for (ordinal_type i=0; i<sz; ++i)
97  r += BIT::dot( x.coeff(i), y.coeff(i) );
98 
99  return r;
100  }
101 
102 };
103 
104 template <typename S>
105 class InnerProductSpaceTraits< const Sacado::MP::Vector<S> > {
106 public:
107  typedef Sacado::MP::Vector<S> val_type;
108 
109  typedef typename val_type::value_type base_value_type;
110  typedef typename val_type::ordinal_type ordinal_type;
111  typedef InnerProductSpaceTraits<base_value_type> BIT;
112  typedef typename BIT::dot_type base_dot_type;
113 
114  typedef typename ArithTraits<val_type>::mag_type mag_type;
115  typedef base_dot_type dot_type;
116 
117  static KOKKOS_FORCEINLINE_FUNCTION
118  mag_type norm (const val_type& x) {
119  //return ArithTraits<val_type>::abs (x);
120  const ordinal_type sz = x.size();
121  mag_type nrm = mag_type(0);
122  for (ordinal_type i=0; i<sz; ++i) {
123  const mag_type n = BIT::norm( x.fastAccessCoeff(i) );
124  nrm += n*n;
125  }
126  return std::sqrt(nrm);
127  }
128 
129  static KOKKOS_FORCEINLINE_FUNCTION
130  dot_type dot (const val_type& x, const val_type& y) {
131  const ordinal_type xsz = x.size();
132  const ordinal_type ysz = y.size();
133  const ordinal_type sz = xsz > ysz ? xsz : ysz;
134 
135  dot_type r = dot_type(0);
136  if (x.hasFastAccess(sz) && y.hasFastAccess(sz))
137  for (ordinal_type i=0; i<sz; ++i)
138  r += BIT::dot( x.fastAccessCoeff(i), y.fastAccessCoeff(i) );
139  else
140  for (ordinal_type i=0; i<sz; ++i)
141  r += BIT::dot( x.coeff(i), y.coeff(i) );
142 
143  return r;
144  }
145 
146 };
147 
148 }
149 }
150 
151 #endif
152 
153 #endif /* #ifndef KOKKOS_INNER_PRODUCT_SPACE_TRAITS_MP_VECTOR_HPP */
KOKKOS_INLINE_FUNCTION PCE< Storage > sqrt(const PCE< Storage > &a)
const IndexType const IndexType const IndexType const IndexType const ValueType const ValueType * x
Definition: csr_vector.h:260
std::enable_if< Kokkos::is_view_uq_pce< Kokkos::View< XD, XP... > >::value &&Kokkos::is_view_uq_pce< Kokkos::View< YD, YP... > >::value, typename Kokkos::Details::InnerProductSpaceTraits< typename Kokkos::View< XD, XP... >::non_const_value_type >::dot_type >::type dot(const Kokkos::View< XD, XP... > &x, const Kokkos::View< YD, YP... > &y)
const IndexType const IndexType const IndexType const IndexType const ValueType const ValueType ValueType * y
Definition: csr_vector.h:267