Reference documentation for deal.II version Git 24041777c5 2021-12-02 20:43:25 -0700
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vectorization.cc
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1 // ---------------------------------------------------------------------
2 //
3 // Copyright (C) 2018 - 2020 by the deal.II authors
4 //
5 // This file is part of the deal.II library.
6 //
7 // The deal.II library is free software; you can use it, redistribute
8 // it, and/or modify it under the terms of the GNU Lesser General
9 // Public License as published by the Free Software Foundation; either
10 // version 2.1 of the License, or (at your option) any later version.
11 // The full text of the license can be found in the file LICENSE at
12 // the top level of the deal.II distribution.
13 //
14 // ---------------------------------------------------------------------
15 
17 
19 
20 // VectorizedArray must be a POD (plain old data) type to make sure it
21 // can use maximum level of compiler optimization.
22 // A type is POD if it has standard layout (similar to a C struct)
23 // and it is trivial (can be statically default initialized)
24 // Here, the trait std::is_pod cannot be used because it is deprecated
25 // in C++20.
26 static_assert(std::is_standard_layout<VectorizedArray<double>>::value &&
27  std::is_trivial<VectorizedArray<double>>::value,
28  "VectorizedArray<double> must be a POD type");
29 static_assert(std::is_standard_layout<VectorizedArray<float>>::value &&
30  std::is_trivial<VectorizedArray<float>>::value,
31  "VectorizedArray<float> must be a POD type");
32 
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:404
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:403