subroutine cyclichi
use modglobal, only:ib, ie, jb, je, ih, jh, kb, ke, kh, nsv, dt, rk3step, dxhi, ihc, jhc, khc, dy
use modfields, only:thl0, thlm
integer m
do m = 1, ih
thl0(ib - m, :, :) = thl0(ie + 1 - m, :, :)
thl0(ie + m, :, :) = thl0(ib - 1 + m, :, :)
thlm(ib - m, :, :) = thlm(ie + 1 - m, :, :)
thlm(ie + m, :, :) = thlm(ib - 1 + m, :, :)
end do
return
end subroutine cyclichi