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#include "cctk.h"
/*@@
@routine SymmetryCondition
@date Mon Mar 15 15:51:57 1999
@author Gerd Lanfermann
@desc
Routine performs the symmetry boundary operations.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
subroutine SymmetryCondition(nxyz,var,nghostzones,sym,doSym)
implicit none
integer i,j,k
INTEGER nxyz(3)
CCTK_REAL var(nxyz(1),nxyz(2),nxyz(3))
INTEGER nghostzones
INTEGER sym(6)
INTEGER doSym(6)
INTEGER sw
c Apply symmetry if
c * the grid chunk has a physical boundary (bbox)
c * its size in a direction is bigger than one (sh)
c * we actually want a symmetry (sx.ne.ESYM_UNSET)
if (doSym(2) .eq. 1 .or. doSym(4) .eq. 1 .or. doSym(6) .eq. 1) then
call CCTKi_NotYetImplemented("Right hand side boundary conditions")
end if
if (doSym(1) .eq. 1) then
do sw=1, nghostzones
do j=1,nxyz(2)
do k=1,nxyz(3)
var(sw,j,k) = sym(1)*var(nghostzones+sw,j,k)
end do
end do
end do
end if
if (doSym(3) .eq. 1) then
do sw=1, nghostzones
do i=1,nxyz(1)
do k=1,nxyz(3)
var(i,sw,k) = sym(3)*var(i,nghostzones+sw,k)
end do
end do
end do
end if
if (doSym(5).eq.1) then
do sw=1, nghostzones
do i=1,nxyz(1)
do j=1,nxyz(2)
var(i,j,sw) = sym(5)*var(i,j,nghostzones+sw)
end do
end do
end do
end if
return
end
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