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Diffstat (limited to 'Examples/Wave/src/wave_boundary.cc')
| -rw-r--r-- | Examples/Wave/src/wave_boundary.cc | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/Examples/Wave/src/wave_boundary.cc b/Examples/Wave/src/wave_boundary.cc new file mode 100644 index 0000000..0341182 --- /dev/null +++ b/Examples/Wave/src/wave_boundary.cc @@ -0,0 +1,173 @@ +/* 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)) + +extern "C" void wave_boundary_SelectBCs(CCTK_ARGUMENTS) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + CCTK_INT ierr = 0; + ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "Wave::evolvedrhs","flat"); + if (ierr < 0) + CCTK_WARN(1, "Failed to register flat BC for Wave::evolvedrhs."); + return; +} + +static void wave_boundary_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 wave_boundary_Body"); + } + + if (cctk_iteration % wave_boundary_calc_every != wave_boundary_calc_offset) + { + return; + } + + const char *groups[] = {"Wave::evolved","Wave::evolvedrhs","grid::coordinates"}; + GenericFD_AssertGroupStorage(cctkGH, "wave_boundary", 3, groups); + + GenericFD_EnsureStencilFits(cctkGH, "wave_boundary", 2, 2, 2); + + /* 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 p1o4dx2 = 0.25*INV(SQR(dx)); + CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy); + CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz); + CCTK_REAL const p1o4dy2 = 0.25*INV(SQR(dy)); + CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz); + CCTK_REAL const p1o4dz2 = 0.25*INV(SQR(dz)); + CCTK_REAL const p1odx = INV(dx); + CCTK_REAL const p1odx2 = INV(SQR(dx)); + CCTK_REAL const p1odxdydz = INV(dx)*INV(dy)*INV(dz); + 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)); + CCTK_REAL const pm1o2dx = -0.5*INV(dx); + CCTK_REAL const pm1o2dy = -0.5*INV(dy); + CCTK_REAL const pm1o2dz = -0.5*INV(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 phiL = phi[index]; + CCTK_REAL piL = pi[index]; + CCTK_REAL rL = r[index]; + CCTK_REAL xL = x[index]; + CCTK_REAL yL = y[index]; + CCTK_REAL zL = z[index]; + + + /* Include user supplied include files */ + + /* Precompute derivatives */ + + /* Calculate temporaries and grid functions */ + CCTK_REAL norm1 = -(xL*INV(rL)); + + CCTK_REAL norm2 = -(yL*INV(rL)); + + CCTK_REAL norm3 = -(zL*INV(rL)); + + ptrdiff_t dir1 = Sign(norm1); + + ptrdiff_t dir2 = Sign(norm2); + + ptrdiff_t dir3 = Sign(norm3); + + CCTK_REAL phirhsL = PDonesided2nd1(&phi[index])*norm1 + + PDonesided2nd2(&phi[index])*norm2 + + PDonesided2nd3(&phi[index])*norm3 - phiL*INV(rL); + + CCTK_REAL pirhsL = PDonesided2nd1(&pi[index])*norm1 + + PDonesided2nd2(&pi[index])*norm2 + PDonesided2nd3(&pi[index])*norm3 + - piL*INV(rL); + + /* Copy local copies back to grid functions */ + phirhs[index] = phirhsL; + pirhs[index] = pirhsL; + } + } + } +} + +extern "C" void wave_boundary(CCTK_ARGUMENTS) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + GenericFD_LoopOverBoundary(cctkGH, &wave_boundary_Body); +} |