diff options
Diffstat (limited to 'src/GRHydro_Source.F90')
| -rw-r--r-- | src/GRHydro_Source.F90 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/GRHydro_Source.F90 b/src/GRHydro_Source.F90 index 9a3c2f8..553c916 100644 --- a/src/GRHydro_Source.F90 +++ b/src/GRHydro_Source.F90 @@ -15,12 +15,18 @@ ! Fourth order f.d. +#if(1) +#define DIFF_X_4(q) ((q(i-2,j,k)-q(i+2,j,k)) + 8.d0 * (q(i+1,j,k) - q(i-1,j,k))) / 12.d0 * ida +#define DIFF_Y_4(q) ((q(i,j-2,k)-q(i,j+2,k)) + 8.d0 * (q(i,j+1,k) - q(i,j-1,k))) / 12.d0 * idb +#define DIFF_Z_4(q) ((q(i,j,k-2)-q(i,j,k+2)) + 8.d0 * (q(i,j,k+1) - q(i,j,k-1))) / 12.d0 * idc +#else #define DIFF_X_4(q) (-q(i+2,j,k) + 8.d0 * q(i+1,j,k) - 8.d0 * q(i-1,j,k) + \ q(i-2,j,k)) / 12.d0 * ida #define DIFF_Y_4(q) (-q(i,j+2,k) + 8.d0 * q(i,j+1,k) - 8.d0 * q(i,j-1,k) + \ q(i,j-2,k)) / 12.d0 * idb #define DIFF_Z_4(q) (-q(i,j,k+2) + 8.d0 * q(i,j,k+1) - 8.d0 * q(i,j,k-1) + \ q(i,j,k-2)) / 12.d0 * idc +#endif #include "cctk.h" #include "cctk_Parameters.h" |