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MueLu_UtilitiesBase_def.hpp
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5// MueLu: A package for multigrid based preconditioning
6// Copyright 2012 Sandia Corporation
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46#ifndef MUELU_UTILITIESBASE_DEF_HPP
47#define MUELU_UTILITIESBASE_DEF_HPP
48
49#include "MueLu_ConfigDefs.hpp"
50
52
53namespace MueLu {
54
55/*template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
56Teuchos::ArrayRCP<Scalar>
57UtilitiesBase<Scalar, LocalOrdinal, GlobalOrdinal, Node>::
58 GetMatrixDiagonal(const Xpetra::Matrix<Scalar,LocalOrdinal,GlobalOrdinal,Node>& A) {
59 size_t numRows = A.getRowMap()->getLocalNumElements();
60 Teuchos::ArrayRCP<Scalar> diag(numRows);
61 Teuchos::ArrayView<const LocalOrdinal> cols;
62 Teuchos::ArrayView<const Scalar> vals;
63 for (size_t i = 0; i < numRows; ++i) {
64 A.getLocalRowView(i, cols, vals);
65 LocalOrdinal j = 0;
66 for (; j < cols.size(); ++j) {
67 if (Teuchos::as<size_t>(cols[j]) == i) {
68 diag[i] = vals[j];
69 break;
70 }
71 }
72 if (j == cols.size()) {
73 // Diagonal entry is absent
74 diag[i] = Teuchos::ScalarTraits<Scalar>::zero();
75 }
76 }
77 return diag;
78}*/
79
80} //namespace MueLu
81
82#define MUELU_UTILITIESBASE_SHORT
83#endif // MUELU_UTILITIESBASE_DEF_HPP
84
85// LocalWords: LocalOrdinal
Namespace for MueLu classes and methods.