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Mark OLESEN authoredfde39047
PrecisionAdaptor.H 8.92 KiB
/*---------------------------------------------------------------------------*\
========= |
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\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
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Copyright (C) 2019-2021 OpenCFD Ltd.
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License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::PrecisionAdaptor
Description
Conversion adaptor for Field/List that either wrap the input as a
reference, or creates a temporary pointer and copies the values
on construction/destruction.
This provides, for example, automatic conversion between types
for linear solvers able to run mixed precision.
\*---------------------------------------------------------------------------*/
#ifndef PrecisionAdaptor_H
#define PrecisionAdaptor_H
#include <algorithm> // For std::copy
#include <type_traits> // For std::is_same
#include "refPtr.H"
#include "Field.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class ConstPrecisionAdaptor Declaration
\*---------------------------------------------------------------------------*/
//- A const Field/List wrapper with possible data conversion
template<class Type, class InputType, template<class> class Container = Field>
class ConstPrecisionAdaptor
:
public refPtr<Container<Type>>
{
// Private Member Functions
//- Set adaptor for different input, copying as required
void setInput(const Container<InputType>& src)
{
if (std::is_same<Type, InputType>::value)
{
// Use reference directly
this->cref(reinterpret_cast<const Container<Type>&>(src));