1 files changed, 127 insertions, 0 deletions
diff --git a/Examples/Burgers/src/burgers_flux_1.cc b/Examples/Burgers/src/burgers_flux_1.cc
new file mode 100644
index 0000000..827bbd6
--- /dev/null
+++ b/Examples/Burgers/src/burgers_flux_1.cc
@@ -0,0 +1,127 @@
+/*  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 burgers_flux_1_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 */, "Burgers::uF_group","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for Burgers::uF_group.");
+  return;
+}
+
+static void burgers_flux_1_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_flux_1_Body");
+  }
+  
+  if (cctk_iteration % burgers_flux_1_calc_every != burgers_flux_1_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"Burgers::uF_group","Burgers::uLeft_group","Burgers::uR_group"};
+  GenericFD_AssertGroupStorage(cctkGH, "burgers_flux_1", 3, groups);
+  
+  GenericFD_EnsureStencilFits(cctkGH, "burgers_flux_1", 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 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 uLeftL = uLeft[index];
+        CCTK_REAL uRL = uR[index];
+        
+        
+        /* Include user supplied include files */
+        
+        /* Precompute derivatives */
+        CCTK_REAL const ShiftMinus1uR = ShiftMinus1(&uR[index]);
+        
+        /* Calculate temporaries and grid functions */
+        CCTK_REAL uFL = 0.25*(SQR(ShiftMinus1uR) + uLeftL*(uLeftL - 
+          2*ToReal(alpha)) + 2*ShiftMinus1uR*ToReal(alpha));
+        
+        /* Copy local copies back to grid functions */
+        uF[index] = uFL;
+      }
+    }
+  }
+}
+
+extern "C" void burgers_flux_1(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverInterior(cctkGH, &burgers_flux_1_Body);
+}