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/*@@
@file SymmetryCondition.c
@date Thu Oct 7 16:45:19 1999
@author Tom Goodale
@desc
C version of Gerd's symmetry stuff.
@enddesc
@@*/
#include "cctk.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusBase_CartGrid3D_SymmetryCondition_c)
/*@@
@routine SymmetryCondition
@date Mon Mar 15 15:51:57 1999
@author Gerd Lanfermann
@desc
Routine performs the symmetry boundary operations.
@enddesc
@calls
@calledby
@history
@hdate Thu Oct 7 16:47:35 1999 @hauthor Tom Goodale
@hdesc Converted to C
@endhistory
@@*/
#define GFINDEX3D(sh,i,j,k) ((i) + sh[0]*((j)+sh[1]*(k)))
void SymmetryCondition(int nxyz[],CCTK_REAL var[], int nghostzones,int sym[], int doSym[])
{
int i,j,k;
int sw;
/*
* Apply symmetry if
* * the grid chunk has a physical boundary (bbox)
* * its size in a direction is bigger than one (sh)
* * we actually want a symmetry (sx.ne.ESYM_UNSET)
*/
if (doSym[1] == 1 || doSym[3] == 1 || doSym[5] == 1)
{
CCTKi_NotYetImplemented("Right hand side boundary conditions");
}
if (doSym[0] == 1)
{
for(k=0; k < nxyz[2]; k++)
{
for(j=0; j < nxyz[1]; j++)
{
for(sw=0; sw < nghostzones; sw++)
{
var[GFINDEX3D(nxyz,sw,j,k)] =
sym[0]*var[GFINDEX3D(nxyz,2*nghostzones-1-sw,j,k)];
}
}
}
}
if (doSym[2] == 1)
{
for(k=0; k < nxyz[2]; k++)
{
for(sw=0; sw < nghostzones; sw++)
{
for(i=0; i < nxyz[0]; i++)
{
var[GFINDEX3D(nxyz,i,sw,k)] =
sym[2]*var[GFINDEX3D(nxyz,i,2*nghostzones-1-sw,k)];
}
}
}
}
if (doSym[4] == 1)
{
for(sw=0; sw < nghostzones; sw++)
{
for(j=0; j < nxyz[1]; j++)
{
for(i=0; i < nxyz[0]; i++)
{
var[GFINDEX3D(nxyz,i,j,sw)] =
sym[4]*var[GFINDEX3D(nxyz,i,j,2*nghostzones-1-sw)];
}
}
}
}
return;
}
void CCTK_FNAME(SymmetryCondition)(int nxyz[],CCTK_REAL var[], int *nghostzones,int sym[], int doSym[])
{
SymmetryCondition(nxyz, var, *nghostzones, sym, doSym);
}
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