#undef KRANC_DIFF_FUNCTIONS
#define KRANC_C
#include "Differencing.h"
#include "GenericFD.h"

#undef KRANC_GFOFFSET3D
#define KRANC_GFOFFSET3D(u,i,j,k) I3D(u,i,j,k)


/* 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))

CAKERNEL_copy_to_device_Begin
  
  /* Include user-supplied include files */
  
  /* Initialise finite differencing variables */
  CCTK_REAL const dx = params.cagh_dx;
  CCTK_REAL const dy = params.cagh_dy;
  CCTK_REAL const dz = params.cagh_dz;
  CCTK_REAL const dt = params.cagh_dt;
  CCTK_REAL const t = params.cagh_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 p1o2dx = 0.5*INV(dx);
  CCTK_REAL const p1o2dy = 0.5*INV(dy);
  CCTK_REAL const p1o2dz = 0.5*INV(dz);
  CCTK_REAL const p1odx2 = INV(SQR(dx));
  CCTK_REAL const p1ody2 = INV(SQR(dy));
  CCTK_REAL const p1odz2 = INV(SQR(dz));
  
  /* Assign local copies of arrays functions */
  
  
  
  /* Calculate temporaries and arrays functions */
  
  /* Copy local copies back to grid functions */
  CAKERNEL_copy_to_device_Computations_Begin
    
    /* Assign local copies of grid functions */
    
    CCTK_REAL phiL = I3D(phi,0,0,0);
    CCTK_REAL piL = I3D(pi,0,0,0);
    
    
    /* Include user supplied include files */
    
    /* Precompute derivatives */
    
    /* Calculate temporaries and grid functions */
    phiL = phiL;
    
    piL = piL;
    
    /* Copy local copies back to grid functions */
    I3D(phi,0,0,0) = phiL;
    I3D(pi,0,0,0) = piL;
    
  CAKERNEL_copy_to_device_Computations_End
  
CAKERNEL_copy_to_device_End