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definitions.h
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definitions.h
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/*
* This file is part of Vlasiator.
* Copyright 2010-2016 Finnish Meteorological Institute
*
* For details of usage, see the COPYING file and read the "Rules of the Road"
* at http://www.physics.helsinki.fi/vlasiator/
*
* This program 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 2 of the License, or
* (at your option) any later version.
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef DEFINITIONS_H
#define DEFINITIONS_H
#include <stdint.h>
#include <limits>
//set floating point precision for storing the distribution function here. Default is single precision, use -DDPF to set double precision
#ifdef DPF
typedef double Realf;
#else
typedef float Realf;
#endif
//set general floating point precision here. Default is single precision, use -DDP to set double precision
#ifdef DP
typedef double Real;
typedef const double creal;
#else
typedef float Real;
typedef const float creal;
#endif
typedef const int cint;
typedef unsigned char uchar;
typedef const unsigned char cuchar;
typedef uint32_t uint;
typedef const uint32_t cuint;
typedef cuint csize;
typedef uint64_t CellID;
template<typename T> T convert(const T& number) {return number;}
/** Definition of simulation geometry, used to speed up
* computations in cases where all velocity coordinates are not used.*/
namespace geometry {
enum Setup {
XY4D, /**< Simulation is 2D, only x,y,vx,vy are used.*/
XZ4D, /**< Simulation is 2D, only x,z,vx,vz are used.*/
XY5D, /**< Simulation is 5D, only x,y,vx,vy,vz are used.*/
XZ5D, /**< Simulation is 5D, only x,z,vx,vy,vz are used.*/
XYZ6D /**< Simulation is 6D (default).*/
};
}
namespace vmesh {
#ifndef VAMR
typedef uint32_t GlobalID; /**< Datatype used for velocity block global IDs.*/
typedef uint32_t LocalID; /**< Datatype used for velocity block local IDs.*/
#else
typedef uint32_t GlobalID;
typedef uint32_t LocalID;
#endif
/** Global ID of a non-existing or otherwise erroneous velocity block.*/
static const GlobalID INVALID_GLOBALID = std::numeric_limits<GlobalID>::max();
/** Local ID of a non-existing or otherwise erroneous velocity block.*/
static const LocalID INVALID_LOCALID = std::numeric_limits<LocalID>::max();
/** Block index of a non-existing or erroneous velocity block.*/
static const LocalID INVALID_VEL_BLOCK_INDEX = INVALID_LOCALID;
}
/** Definition of a function that takes in a velocity block with neighbor data,
* and returns a number that is used to decide whether or not the block should
* be refined or coarsened.*/
typedef Realf (*VAmrVelRefinement)(const Realf* velBlock);
// neighborhoods, these are initialized in grid.cpp:initializeGrid
//#define FIELD_SOLVER_NEIGHBORHOOD_ID 1 // Now fields on FSgrid
#define VLASOV_SOLVER_NEIGHBORHOOD_ID 2 //up to third(PPM) neighbor in each face direction
#define VLASOV_SOLVER_X_NEIGHBORHOOD_ID 3 //up to third(PPM) neighbor in x face directions
#define VLASOV_SOLVER_Y_NEIGHBORHOOD_ID 4 //up to third(PPM) neighbor in y face directions
#define VLASOV_SOLVER_Z_NEIGHBORHOOD_ID 5 //up to third(PPM) neighbor in z face directions
#define VLASOV_SOLVER_TARGET_X_NEIGHBORHOOD_ID 6 //nearest neighbor in X face direction, f() can propagate to local cells in X dir, and are target for local cells
#define VLASOV_SOLVER_TARGET_Y_NEIGHBORHOOD_ID 7 //nearest neighbor in Y face direction, f() can propagate to local cells in Y dir, and are target for local cells
#define VLASOV_SOLVER_TARGET_Z_NEIGHBORHOOD_ID 8 //nearest neighbor in Z face direction, f() can propagate to local cells in Z dir, and are target for local cells
#define SYSBOUNDARIES_NEIGHBORHOOD_ID 9 // When classifying sysboundaries, all 26 nearest neighbors are included,
#define SYSBOUNDARIES_EXTENDED_NEIGHBORHOOD_ID 10 //Up to second nearest neighbors in all directions (also diagonals)
#define NEAREST_NEIGHBORHOOD_ID 11 //nearest neighbors
#define FULL_NEIGHBORHOOD_ID 12 //Up to second nearest neighbors in all directions (also diagonals) + vlasov solver neighborhood
#define DIST_FUNC_NEIGHBORHOOD_ID 13 //nearest neighbors in all directions (also diagonals) + vlasov solver neighborhood
#define SHIFT_P_X_NEIGHBORHOOD_ID 14 //Shift in +x direction
#define SHIFT_P_Y_NEIGHBORHOOD_ID 15 //Shift in +y direction
#define SHIFT_P_Z_NEIGHBORHOOD_ID 16 //Shift in +z direction
#define SHIFT_M_X_NEIGHBORHOOD_ID 17 //Shift in -x direction
#define SHIFT_M_Y_NEIGHBORHOOD_ID 18 //Shift in -y direction
#define SHIFT_M_Z_NEIGHBORHOOD_ID 19 //Shift in -z direction
//fieldsolver stencil.
#define FS_STENCIL_WIDTH 2
//Vlasov propagator stencils in ordinary space, velocity space may be
//higher. Assume H4 (or H5) for PPM, H6 for PQM
#ifdef TRANS_SEMILAG_PLM
#define VLASOV_STENCIL_WIDTH 1
#endif
#ifdef TRANS_SEMILAG_PPM
#define VLASOV_STENCIL_WIDTH 2
#endif
#ifdef TRANS_SEMILAG_PQM
#define VLASOV_STENCIL_WIDTH 3
#endif
// Max number of face neighbors per dimension with AMR
#define MAX_NEIGHBORS_PER_DIM 8
#define MAX_FACE_NEIGHBORS_PER_DIM 4
#endif