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/*@@
@file Symmetry.c
@date Tue Apr 18 14:14:16 2000
@author Gerd Lanfermann
@desc
Routines to apply the 1/2/3D Symmetries for
all symmetry domains (octant/bitant/quadrant).
@enddesc
@@*/
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "cctk.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusBase_CartGrid3D_Symmetry_c)
/*#define SYM_DEBUG*/
int CartApplySym3Di(cGH *GH, int *doSym, int *cntstag,
int *lssh, int *ghostz, int *sym, CCTK_REAL *var);
int CartApplySym2Di(cGH *GH, int *doSym, int *cntstag,
int *lssh, int *ghostz, int *sym, CCTK_REAL *var);
int CartApplySym1Di(cGH *GH, int *doSym, int *cntstag,
int *lssh, int *ghostz, int *sym, CCTK_REAL *var);
/*@@
@routine CartApplySym3Di
@date Tue Apr 18 14:17:23 2000
@author Gerd Lanfermann
@desc Apply Symmetry BC to 3D variables
Variables passed through:
cGH *GH pointer to cGH
int *doSym flags whether to apply a symmetries on a given face
size 2*dim, here we only check for lower faces:0,2,4
int *cntstag value used when the gridpoints are staggered
around the origin
int *lssh size of the domain,
int *ghostz size of the ghostzone
int *sym symmetry values
CCTK_REAL *var pointer to variable
index convention:
i ~ x ~ 0
j ~ y ~ 1
k ~ z ~ 2
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int CartApplySym3Di(cGH *GH, int *doSym, int *cntstag,
int *lssh, int *ghostz, int *sym, CCTK_REAL *var)
{
int i,j,k;
#ifdef SYM_DEBUG
printf(" doSym: %d %d / %d %d / %d %d \n",
doSym[0],doSym[1],
doSym[2],doSym[3],
doSym[4],doSym[5]);
printf(" lssh: %d %d %d sym: %d %d %d \n",
lssh[0],lssh[1],lssh[2], sym[0], sym[2], sym[4] );
printf(" ghostz %d %d %d \n",ghostz[0],ghostz[1],ghostz[2]);
printf(" cntstag: %d %d %d\n",cntstag[0],cntstag[1],cntstag[2]);
#endif
if (doSym[0] == 1)
{
for(k=0; k < lssh[2]; k++)
{
for(j=0; j < lssh[1]; j++)
{
for(i=0; i < ghostz[0]; i++)
{
var[CCTK_GFINDEX3D(GH,i,j,k)] =
sym[0]*var[CCTK_GFINDEX3D(GH,2*ghostz[0]-cntstag[0]-i,j,k)];
}
}
}
}
if (doSym[2] == 1)
{
for(i=0; i < lssh[0]; i++)
{
for(k=0; k < lssh[2]; k++)
{
for(j=0; j < ghostz[1]; j++)
{
var[CCTK_GFINDEX3D(GH,i,j,k)] =
sym[2]*var[CCTK_GFINDEX3D(GH,i,2*ghostz[1]-cntstag[1]-j,k)];
}
}
}
}
if (doSym[4] == 1)
{
for(i=0; i < lssh[0]; i++)
{
for(j=0; j < lssh[1]; j++)
{
for(k=0; k < ghostz[2]; k++)
{
var[CCTK_GFINDEX3D(GH,i,j,k)] =
sym[4]*var[CCTK_GFINDEX3D(GH,i,j,2*ghostz[2]-cntstag[2]-k)];
}
}
}
}
return(0);
}
/*@@
@routine CartApplySym2Di
@date Tue Apr 18 14:17:23 2000
@author Gerd Lanfermann
@desc Apply Symmetry BC to 2D variables
index convention:
i ~ x ~ 0
j ~ y ~ 1
k ~ z ~ 2
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int CartApplySym2Di(cGH *GH, int *doSym, int *cntstag,
int *lssh, int *ghostz, int *sym, CCTK_REAL *var)
{
int i,j;
if (doSym[0] == 1)
{
for(j=0; j < lssh[1]; j++)
{
for(i=0; i < ghostz[0]; i++)
{
var[CCTK_GFINDEX2D(GH,i,j)] =
sym[0]*var[CCTK_GFINDEX2D(GH,2*ghostz[0]-cntstag[0]-i,j)];
}
}
}
if (doSym[2] == 1)
{
for(i=0; i < lssh[0]; i++)
{
for(j=0; j < ghostz[1]; j++)
{
var[CCTK_GFINDEX2D(GH,i,j)] =
sym[2]*var[CCTK_GFINDEX2D(GH,i,2*ghostz[1]-cntstag[1]-j)];
}
}
}
return(0);
}
/*@@
@routine CartApplySym1Di
@date Tue Apr 18 14:17:23 2000
@author Gerd Lanfermann
@desc Apply Symmetry BC to 1D variables
index convention:
i ~ x ~ 0
j ~ y ~ 1
k ~ z ~ 2
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int CartApplySym1Di(cGH *GH, int *doSym, int *cntstag,
int *lssh, int *ghostz, int *sym, CCTK_REAL *var)
{
int i;
/* avoid compiler warnings about unused parameters */
GH = GH;
lssh = lssh;
if (doSym[0] == 1)
{
for(i=0; i < ghostz[0]; i++)
{
var[CCTK_GFINDEX1D(GH,i)] =
sym[0]*var[CCTK_GFINDEX1D(GH,2*ghostz[0]-cntstag[0]-i)];
}
}
return(0);
}
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