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NistSparseDescriptors.hpp
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File: NistSparseDescriptors.hpp
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5 // For more information, please see: http://www.nektar.info
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7 // The MIT License
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
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31 //
32 // Description: NIST sparse BLAS matrix representation descriptors in the order
33 // that matches MatrixStorage enum values (where applicable)
34 //
35 ///////////////////////////////////////////////////////////////////////////////
36 
37 #ifndef NEKTAR_LIB_UTILITIES_LINEAR_ALGEBRA_NIST_SPARSE_DESCRIPTORS_HPP
38 #define NEKTAR_LIB_UTILITIES_LINEAR_ALGEBRA_NIST_SPARSE_DESCRIPTORS_HPP
39 
40 namespace Nektar
41 {
42 
43  // Converts Nektar++ dense matrix type enums to
44  // NIST Sparse Blas descriptors
45  static const int NistSpBlasDescra[5][9] =
46  {
47  // MatrixStorage::eFULL
48  { 0, // general matrix
49  0, // neither lower- nor upper-triangular
50  0, // non-unit diagonal
51  0, // array base is C++-compatible
52  0, 0, 0, 0, 0 // not in use
53  },
54  // MatrixStorage::eDIAGONAL
55  { 5, // diagonal
56  0, // neither lower- nor upper-triangular
57  0, // non-unit diagonal
58  0, // array base is C++-compatible
59  0, 0, 0, 0, 0 // not in use
60  },
61  // MatrixStorage::eUPPER_TRIANGULAR
62  { 3, // triangular
63  2, // upper-triangular
64  0, // non-unit diagonal
65  0, // array base is C++-compatible
66  0, 0, 0, 0, 0 // not in use
67  },
68  // MatrixStorage::eLOWER_TRIANGULAR
69  { 3, // triangular
70  1, // lower-triangular
71  0, // non-unit diagonal
72  0, // array base is C++-compatible
73  0, 0, 0, 0, 0 // not in use
74  },
75  // MatrixStorage::eSYMMETRIC
76  { 1, // symmetric
77  2, // upper-triangular part to be stored
78  //1, // lower-triangular part to be stored
79  0, // non-unit diagonal
80  0, // array base is C++-compatible
81  0, 0, 0, 0, 0 // not in use
82  }
83  };
84 
85 } // namespace
86 
87 #endif //NEKTAR_LIB_UTILITIES_LINEAR_ALGEBRA_NIST_SPARSE_DESCRIPTORS_HPP