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/* 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 burgers_initial_shock_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 burgers_initial_shock_Body");
}
if (cctk_iteration % burgers_initial_shock_calc_every != burgers_initial_shock_calc_offset)
{
return;
}
const char *groups[] = {"grid::coordinates","Burgers::u_group"};
GenericFD_AssertGroupStorage(cctkGH, "burgers_initial_shock", 2, groups);
/* 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 p1odx = INV(dx);
CCTK_REAL const p1ody = INV(dy);
CCTK_REAL const p1odz = 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 xL = x[index];
/* Include user supplied include files */
/* Precompute derivatives */
/* Calculate temporaries and grid functions */
CCTK_REAL uL = Piecewise(List(List(ToReal(uL0),xL < 0.5)),0. +
ToReal(uR0));
/* Copy local copies back to grid functions */
u[index] = uL;
}
}
}
}
extern "C" void burgers_initial_shock(CCTK_ARGUMENTS)
{
DECLARE_CCTK_ARGUMENTS;
DECLARE_CCTK_PARAMETERS;
GenericFD_LoopOverEverything(cctkGH, &burgers_initial_shock_Body);
}
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