/usr/include/palabos/latticeBoltzmann/latticeTemplates.h is in libplb-dev 1.5~r1+repack1-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /* This file is part of the Palabos library.
*
* Copyright (C) 2011-2015 FlowKit Sarl
* Route d'Oron 2
* 1010 Lausanne, Switzerland
* E-mail contact: contact@flowkit.com
*
* The most recent release of Palabos can be downloaded at
* <http://www.palabos.org/>
*
* The library Palabos is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* The library 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Helper functions for the implementation of lattice operations. This file is all
* about efficiency. The generic template code is specialized for commonly
* used Lattices, so that a maximum performance can be taken out of each
* case.
*/
#ifndef LATTICE_TEMPLATES_H
#define LATTICE_TEMPLATES_H
#include "core/globalDefs.h"
#include "core/cell.h"
#include "core/util.h"
namespace plb {
/// Helper functions with full-lattice access
template<typename T, template<typename U> class Descriptor>
struct latticeTemplates {
/// Swap ("bounce-back") values of a cell (2D), and apply streaming step
static void swapAndStream2D(Cell<T,Descriptor> **grid, plint iX, plint iY)
{
const plint half = Descriptor<T>::q/2;
for (plint iPop=1; iPop<=half; ++iPop) {
plint nextX = iX + Descriptor<T>::c[iPop][0];
plint nextY = iY + Descriptor<T>::c[iPop][1];
T fTmp = grid[iX][iY][iPop];
grid[iX][iY][iPop] = grid[iX][iY][iPop+half];
grid[iX][iY][iPop+half] = grid[nextX][nextY][iPop];
grid[nextX][nextY][iPop] = fTmp;
}
}
/// Swap ("bounce-back") values of a cell (3D), and apply streaming step
static void swapAndStream3D(Cell<T,Descriptor> ***grid,
plint iX, plint iY, plint iZ)
{
const plint half = Descriptor<T>::q/2;
for (plint iPop=1; iPop<=half; ++iPop) {
plint nextX = iX + Descriptor<T>::c[iPop][0];
plint nextY = iY + Descriptor<T>::c[iPop][1];
plint nextZ = iZ + Descriptor<T>::c[iPop][2];
T fTmp = grid[iX][iY][iZ][iPop];
grid[iX][iY][iZ][iPop] = grid[iX][iY][iZ][iPop+half];
grid[iX][iY][iZ][iPop+half] = grid[nextX][nextY][nextZ][iPop];
grid[nextX][nextY][nextZ][iPop] = fTmp;
}
}
};
} // namespace plb
#include "latticeBoltzmann/latticeTemplates2D.h"
#include "latticeBoltzmann/latticeTemplates3D.h"
#endif
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