diff options
| -rw-r--r-- | Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h b/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h index 401b4e0..37cbe40 100644 --- a/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h +++ b/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h @@ -43,6 +43,26 @@ extern "C" { #include "MathematicaCompat.h" #ifdef KRANC_C + + /* Grid function access */ + /* var is a pointer to a grid point (an lvalue), i,j,k are offsets + with respect to that point. + For example: KRANC_GFINDEX3D_OFFSET(&u[ind3d],-1,-1,0) */ +#ifndef VECTORISE + /* standard, no vectorisation */ + /* simple implementation */ + /* # define KRANC_GFOFFSET3D(var,i,j,k) ((var)[di*(i)+dj*(j)+dk*(k)]) */ + /* more efficient implementation for some compilers */ +# define KRANC_GFOFFSET3D(var,i,j,k) \ + (*(CCTK_REAL const*)&((char const*)(var))[cdi*(i)+cdj*(j)+cdk*(k)]) +#else + /* vectorised version */ +# define KRANC_GFOFFSET3D(var,i,j,k) \ + vec_loadu_maybe3((i),(j),(k), \ + *(CCTK_REAL const*)& \ + ((char const*)(var))[cdi*(i)+cdj*(j)+cdk*(k)]) +#endif + int sgn(CCTK_REAL x); int GenericFD_GetBoundaryWidth(cGH const * restrict const cctkGH); |