diff options
| author | Erik Schnetter <schnetter@cct.lsu.edu> | 2009-04-27 11:27:38 -0500 |
|---|---|---|
| committer | Ian Hinder <ian.hinder@aei.mpg.de> | 2009-04-27 21:51:04 +0200 |
| commit | 269ff945b9bbed7724db0d960c671a6e5f15b801 (patch) | |
| tree | 269f1ef9ab8e74f622782801833c26cce5353e08 /Auxiliary/Cactus/KrancNumericalTools | |
| parent | ef0e1e9a215cd69f1d95e8bd3c6207d19112916f (diff) | |
Add commented out code for helping accessing grid functions near boundaries:
Define a macro CCTK_GFACCESS3D which returns grid point values if
inside the domain, and zero otherwise.
Diffstat (limited to 'Auxiliary/Cactus/KrancNumericalTools')
| -rw-r--r-- | Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h b/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h index d15b7ab..6dd1067 100644 --- a/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h +++ b/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h @@ -684,6 +684,25 @@ void GenericFD_GetBoundaryInfo(cGH const * restrict cctkGH, CCTK_INT * restrict is_physbnd, CCTK_INT * restrict is_ipbnd); +#if 0 +/* Finite differencing near boundaries */ + +/* The array var is to be accessed at the location + [i+ioff,j+joff,k+koff]. idir,jdir,kdir specify whether there is a + lower (dir<0), upper (dir>0), or no boundary nearby. If a boundary + is in the way, the value 0 is returned instead of the array + content. */ +#define CCTK_GFACCESS3D(cctkGH, var, i,j,k, ioff,joff,koff, idir,jdir,kdir) \ + (((idir)<0 && (ioff)<0) || \ + ((jdir)<0 && (joff)<0) || \ + ((kdir)<0 && (koff)<0) || \ + ((idir)>0 && (ioff)>0) || \ + ((jdir)>0 && (joff)>0) || \ + ((kdir)>0 && (koff)>0) || \ + ? 0 \ + : (var)[CCTK_GFINDEX3D((cctkGH), (i)+(ioff),(j)+(joff),(k)+(koff))]) +#endif + /* Summation by parts */ static inline CCTK_REAL sbp_deriv_x(int i, int j, int k, |