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Diffstat (limited to 'Examples/EM/src/EM_evol.cc')
| -rw-r--r-- | Examples/EM/src/EM_evol.cc | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/Examples/EM/src/EM_evol.cc b/Examples/EM/src/EM_evol.cc new file mode 100644 index 0000000..311d5ca --- /dev/null +++ b/Examples/EM/src/EM_evol.cc @@ -0,0 +1,162 @@ +/* File produced by Kranc */ + +#define KRANC_C + +#include <assert.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "cctk.h" +#include "cctk_Arguments.h" +#include "cctk_Parameters.h" +#include "GenericFD.h" +#include "Differencing.h" + +/* Define macros used in calculations */ +#define INITVALUE (42) +#define QAD(x) (SQR(SQR(x))) +#define INV(x) ((1.0) / (x)) +#define SQR(x) ((x) * (x)) +#define CUB(x) ((x) * (x) * (x)) + +static void EM_evol_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[]) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + + /* Declare the variables used for looping over grid points */ + CCTK_INT i, j, k; + // CCTK_INT index = INITVALUE; + + /* Declare finite differencing variables */ + + if (verbose > 1) + { + CCTK_VInfo(CCTK_THORNSTRING,"Entering EM_evol_Body"); + } + + if (cctk_iteration % EM_evol_calc_every != EM_evol_calc_offset) + { + return; + } + + const char *groups[] = {"EM::B_group","EM::B_grouprhs","EM::El_group","EM::El_grouprhs"}; + GenericFD_AssertGroupStorage(cctkGH, "EM_evol", 4, groups); + + GenericFD_EnsureStencilFits(cctkGH, "EM_evol", 1, 1, 1); + + /* Include user-supplied include files */ + + /* Initialise finite differencing variables */ + ptrdiff_t const di = 1; + ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0); + ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0); + CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0)); + CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1)); + CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2)); + CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME); + CCTK_REAL const dxi = INV(dx); + CCTK_REAL const dyi = INV(dy); + CCTK_REAL const dzi = INV(dz); + CCTK_REAL const khalf = 0.5; + CCTK_REAL const kthird = 1/3.0; + CCTK_REAL const ktwothird = 2.0/3.0; + CCTK_REAL const kfourthird = 4.0/3.0; + CCTK_REAL const keightthird = 8.0/3.0; + CCTK_REAL const hdxi = 0.5 * dxi; + CCTK_REAL const hdyi = 0.5 * dyi; + CCTK_REAL const hdzi = 0.5 * dzi; + + /* Initialize predefined quantities */ + CCTK_REAL const p1o1 = 1; + CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx); + CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy); + CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz); + CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy); + CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz); + CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz); + CCTK_REAL const p1o2dx = 0.5*INV(dx); + CCTK_REAL const p1o2dy = 0.5*INV(dy); + CCTK_REAL const p1o2dz = 0.5*INV(dz); + CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy); + CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz); + CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz); + CCTK_REAL const p1odx = INV(dx); + CCTK_REAL const p1odx2 = INV(SQR(dx)); + CCTK_REAL const p1ody = INV(dy); + CCTK_REAL const p1ody2 = INV(SQR(dy)); + CCTK_REAL const p1odz = INV(dz); + CCTK_REAL const p1odz2 = INV(SQR(dz)); + CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx)); + CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy)); + CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz)); + + /* Loop over the grid points */ + for (k = min[2]; k < max[2]; k++) + { + for (j = min[1]; j < max[1]; j++) + { + for (i = min[0]; i < max[0]; i++) + { + int const index = CCTK_GFINDEX3D(cctkGH,i,j,k) ; + + /* Assign local copies of grid functions */ + + CCTK_REAL B1L = B1[index]; + CCTK_REAL B2L = B2[index]; + CCTK_REAL B3L = B3[index]; + CCTK_REAL El1L = El1[index]; + CCTK_REAL El2L = El2[index]; + CCTK_REAL El3L = El3[index]; + + + /* Include user supplied include files */ + + /* Precompute derivatives */ + CCTK_REAL const PDstandard2nd2B1 = PDstandard2nd2(&B1[index]); + CCTK_REAL const PDstandard2nd3B1 = PDstandard2nd3(&B1[index]); + CCTK_REAL const PDstandard2nd1B2 = PDstandard2nd1(&B2[index]); + CCTK_REAL const PDstandard2nd3B2 = PDstandard2nd3(&B2[index]); + CCTK_REAL const PDstandard2nd1B3 = PDstandard2nd1(&B3[index]); + CCTK_REAL const PDstandard2nd2B3 = PDstandard2nd2(&B3[index]); + CCTK_REAL const PDstandard2nd2El1 = PDstandard2nd2(&El1[index]); + CCTK_REAL const PDstandard2nd3El1 = PDstandard2nd3(&El1[index]); + CCTK_REAL const PDstandard2nd1El2 = PDstandard2nd1(&El2[index]); + CCTK_REAL const PDstandard2nd3El2 = PDstandard2nd3(&El2[index]); + CCTK_REAL const PDstandard2nd1El3 = PDstandard2nd1(&El3[index]); + CCTK_REAL const PDstandard2nd2El3 = PDstandard2nd2(&El3[index]); + + /* Calculate temporaries and grid functions */ + CCTK_REAL El1rhsL = PDstandard2nd2B3 - PDstandard2nd3B2; + + CCTK_REAL El2rhsL = -PDstandard2nd1B3 + PDstandard2nd3B1; + + CCTK_REAL El3rhsL = PDstandard2nd1B2 - PDstandard2nd2B1; + + CCTK_REAL B1rhsL = -PDstandard2nd2El3 + PDstandard2nd3El2; + + CCTK_REAL B2rhsL = PDstandard2nd1El3 - PDstandard2nd3El1; + + CCTK_REAL B3rhsL = -PDstandard2nd1El2 + PDstandard2nd2El1; + + /* Copy local copies back to grid functions */ + B1rhs[index] = B1rhsL; + B2rhs[index] = B2rhsL; + B3rhs[index] = B3rhsL; + El1rhs[index] = El1rhsL; + El2rhs[index] = El2rhsL; + El3rhs[index] = El3rhsL; + } + } + } +} + +extern "C" void EM_evol(CCTK_ARGUMENTS) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + GenericFD_LoopOverEverything(cctkGH, &EM_evol_Body); +} |