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module warpx_module
use iso_c_binding
use amrex_fort_module, only : amrex_real, amrex_spacedim
implicit none
contains
subroutine warpx_compute_E (lo, hi, &
phi, phlo, phhi, &
Ex, Exlo, Exhi, &
Ey, Eylo, Eyhi, &
Ez, Ezlo, Ezhi, &
dx) bind(c,name='warpx_compute_E')
integer(c_int), intent(in) :: lo(3), hi(3), phlo(3), phhi(3), Exlo(3), Exhi(3), &
Eylo(3), Eyhi(3), Ezlo(3), Ezhi(3)
real(amrex_real), intent(in) :: dx(3)
real(amrex_real), intent(in ) :: phi(phlo(1):phhi(1),phlo(2):phhi(2),phlo(3):phhi(3))
real(amrex_real), intent(inout) :: Ex (Exlo(1):Exhi(1),Exlo(2):Exhi(2),Exlo(3):Exhi(3))
real(amrex_real), intent(inout) :: Ey (Eylo(1):Eyhi(1),Eylo(2):Eyhi(2),Eylo(3):Eyhi(3))
real(amrex_real), intent(inout) :: Ez (Ezlo(1):Ezhi(1),Ezlo(2):Ezhi(2),Ezlo(3):Ezhi(3))
integer :: i, j, k
real(amrex_real) :: dxinv(3)
dxinv = 1.0 / dx
do k = lo(3), hi(3)
do j = lo(2), hi(2)
do i = lo(1), hi(1)-1
Ex(i,j,k) = dxinv(1) * (phi(i,j,k) - phi(i+1,j,k))
end do
if (j < hi(2)) then
do i = lo(1), hi(1)
Ey(i,j,k) = dxinv(2) * (phi(i,j,k) - phi(i,j+1,k))
end do
end if
if (k < hi(3)) then
do i = lo(1), hi(1)
Ez(i,j,k) = dxinv(3) * (phi(i,j,k) - phi(i,j,k+1))
end do
end if
end do
end do
end subroutine warpx_compute_E
subroutine warpx_sync_current_2d (lo, hi, crse, clo, chi, fine, flo, fhi, dir) &
bind(c, name='warpx_sync_current_2d')
integer, intent(in) :: lo(2), hi(2), flo(2), fhi(2), clo(2), chi(2), dir
real(amrex_real), intent(in ) :: fine(flo(1):fhi(1),flo(2):fhi(2))
real(amrex_real), intent(inout) :: crse(clo(1):chi(1),clo(2):chi(2))
integer :: i,j,ii,jj
if (dir == 0) then
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j) = 0.25d0 * (fine(ii,jj) + fine(ii+1,jj) &
+ 0.5d0*(fine(ii,jj-1) + fine(ii+1,jj-1) + fine(ii,jj+1) + fine(ii+1,jj+1)) )
end do
end do
else if (dir == 2) then
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j) = 0.25d0 * (fine(ii,jj) + fine(ii,jj+1) &
+ 0.5d0*(fine(ii-1,jj) + fine(ii-1,jj+1) + fine(ii+1,jj) + fine(ii+1,jj+1)) )
end do
end do
else
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j) = 0.25d0 * &
( fine(ii,jj) + 0.5d0 *(fine(ii-1,jj )+fine(ii+1,jj ) &
& + fine(ii ,jj-1)+fine(ii ,jj+1)) &
& + 0.25d0*(fine(ii-1,jj-1)+fine(ii+1,jj-1) &
& + fine(ii-1,jj+1)+fine(ii+1,jj+1)) )
end do
end do
end if
end subroutine warpx_sync_current_2d
subroutine warpx_sync_current_3d (lo, hi, crse, clo, chi, fine, flo, fhi, dir) &
bind(c, name='warpx_sync_current_3d')
integer, intent(in) :: lo(3), hi(3), flo(3), fhi(3), clo(3), chi(3), dir
real(amrex_real), intent(in ) :: fine(flo(1):fhi(1),flo(2):fhi(2),flo(3):fhi(3))
real(amrex_real), intent(inout) :: crse(clo(1):chi(1),clo(2):chi(2),clo(3):chi(3))
integer :: i,j,k, ii,jj,kk
if (dir == 0) then
do k = lo(3), hi(3)
kk = k*2
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j,k) = 0.125d0* &
( fine(ii ,jj,kk) + 0.5d0 *(fine(ii ,jj-1,kk )+fine(ii ,jj+1,kk ) &
& + fine(ii ,jj ,kk-1)+fine(ii ,jj ,kk+1)) &
& + 0.25d0*(fine(ii ,jj-1,kk-1)+fine(ii ,jj+1,kk-1) &
& + fine(ii ,jj-1,kk+1)+fine(ii ,jj+1,kk+1)) &
+ fine(ii+1,jj,kk) + 0.5d0 *(fine(ii+1,jj-1,kk )+fine(ii+1,jj+1,kk ) &
& + fine(ii+1,jj ,kk-1)+fine(ii+1,jj ,kk+1)) &
& + 0.25d0*(fine(ii+1,jj-1,kk-1)+fine(ii+1,jj+1,kk-1) &
& + fine(ii+1,jj-1,kk+1)+fine(ii+1,jj+1,kk+1)) )
end do
end do
end do
else if (dir == 1) then
do k = lo(3), hi(3)
kk = k*2
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j,k) = 0.125d0* &
( fine(ii,jj ,kk) + 0.5d0 *(fine(ii-1,jj ,kk )+fine(ii+1,jj ,kk ) &
& + fine(ii ,jj ,kk-1)+fine(ii ,jj ,kk+1)) &
& + 0.25d0*(fine(ii-1,jj ,kk-1)+fine(ii+1,jj ,kk-1) &
& + fine(ii-1,jj ,kk+1)+fine(ii+1,jj ,kk+1)) &
+ fine(ii,jj+1,kk) + 0.5d0 *(fine(ii-1,jj+1,kk )+fine(ii+1,jj+1,kk ) &
& + fine(ii ,jj+1,kk-1)+fine(ii ,jj+1,kk+1)) &
& + 0.25d0*(fine(ii-1,jj+1,kk-1)+fine(ii+1,jj+1,kk-1) &
& + fine(ii-1,jj+1,kk+1)+fine(ii+1,jj+1,kk+1)) )
end do
end do
end do
else
do k = lo(3), hi(3)
kk = k*2
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j,k) = 0.125d0* &
( fine(ii,jj,kk ) + 0.5d0 *(fine(ii-1,jj ,kk )+fine(ii+1,jj ,kk ) &
& + fine(ii ,jj-1,kk )+fine(ii ,jj+1,kk )) &
& + 0.25d0*(fine(ii-1,jj-1,kk )+fine(ii+1,jj-1,kk ) &
& + fine(ii-1,jj+1,kk )+fine(ii+1,jj+1,kk )) &
+ fine(ii,jj,kk+1) + 0.5d0 *(fine(ii-1,jj ,kk+1)+fine(ii+1,jj ,kk+1) &
& + fine(ii ,jj-1,kk+1)+fine(ii ,jj+1,kk+1)) &
& + 0.25d0*(fine(ii-1,jj-1,kk+1)+fine(ii+1,jj-1,kk+1) &
& + fine(ii-1,jj+1,kk+1)+fine(ii+1,jj+1,kk+1)) )
end do
end do
end do
end if
end subroutine warpx_sync_current_3d
subroutine warpx_sync_rho_2d (lo, hi, crse, clo, chi, fine, flo, fhi, nc) &
bind(c, name='warpx_sync_rho_2d')
integer, intent(in) :: lo(2), hi(2), flo(2), fhi(2), clo(2), chi(2), nc
real(amrex_real), intent(in ) :: fine(flo(1):fhi(1),flo(2):fhi(2),nc)
real(amrex_real), intent(inout) :: crse(clo(1):chi(1),clo(2):chi(2),nc)
integer :: i,j,ii,jj,m
do m = 1, nc
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j,m) = 0.25d0 * &
( fine(ii,jj,m) + 0.5d0 *(fine(ii-1,jj ,m)+fine(ii+1,jj ,m) &
& + fine(ii ,jj-1,m)+fine(ii ,jj+1,m)) &
& + 0.25d0*(fine(ii-1,jj-1,m)+fine(ii+1,jj-1,m) &
& + fine(ii-1,jj+1,m)+fine(ii+1,jj+1,m)) )
end do
end do
end do
end subroutine warpx_sync_rho_2d
subroutine warpx_sync_rho_3d (lo, hi, crse, clo, chi, fine, flo, fhi, nc) &
bind(c, name='warpx_sync_rho_3d')
integer, intent(in) :: lo(3), hi(3), flo(3), fhi(3), clo(3), chi(3), nc
real(amrex_real), intent(in ) :: fine(flo(1):fhi(1),flo(2):fhi(2),flo(3):fhi(3),nc)
real(amrex_real), intent(inout) :: crse(clo(1):chi(1),clo(2):chi(2),clo(3):chi(3),nc)
integer :: i,j,k,ii,jj,kk,m
do m = 1, nc
do k = lo(3), hi(3)
kk = k*2
do j = lo(2), hi(2)
jj = j*2
do i = lo(1), hi(1)
ii = i*2
crse(i,j,k,m) = 0.125d0 * &
(fine(ii,jj,kk,m) + 0.5d0 *(fine(ii-1,jj ,kk ,m)+fine(ii+1,jj ,kk ,m) &
& + fine(ii ,jj-1,kk ,m)+fine(ii ,jj+1,kk ,m) &
& + fine(ii ,jj ,kk-1,m)+fine(ii ,jj ,kk+1,m)) &
& + 0.25d0 *(fine(ii-1,jj-1,kk ,m)+fine(ii+1,jj-1,kk ,m) &
& + fine(ii-1,jj+1,kk ,m)+fine(ii+1,jj+1,kk ,m) &
& + fine(ii-1,jj ,kk-1,m)+fine(ii+1,jj ,kk-1,m) &
& + fine(ii-1,jj ,kk+1,m)+fine(ii+1,jj ,kk+1,m) &
& + fine(ii ,jj-1,kk-1,m)+fine(ii ,jj+1,kk-1,m) &
& + fine(ii ,jj-1,kk+1,m)+fine(ii ,jj+1,kk+1,m)) &
& + 0.125d0*(fine(ii-1,jj-1,kk-1,m)+fine(ii-1,jj-1,kk+1,m) &
& + fine(ii-1,jj+1,kk-1,m)+fine(ii-1,jj+1,kk+1,m) &
& + fine(ii+1,jj-1,kk-1,m)+fine(ii+1,jj-1,kk+1,m) &
& + fine(ii+1,jj+1,kk-1,m)+fine(ii+1,jj+1,kk+1,m)))
end do
end do
end do
end do
end subroutine warpx_sync_rho_3d
subroutine warpx_build_buffer_masks (lo, hi, msk, mlo, mhi, gmsk, glo, ghi, ng) &
bind(c, name='warpx_build_buffer_masks')
integer, dimension(3), intent(in) :: lo, hi, mlo, mhi, glo, ghi
integer, intent(in ) :: gmsk(glo(1):ghi(1),glo(2):ghi(2),glo(3):ghi(3))
integer, intent(inout) :: msk(mlo(1):mhi(1),mlo(2):mhi(2),mlo(3):mhi(3))
integer, intent(in) :: ng
integer :: i,j,k
if (amrex_spacedim .eq. 2) then
k = lo(3)
do j = lo(2), hi(2)
do i = lo(1), hi(1)
if (any(gmsk(i-ng:i+ng,j-ng:j+ng,k).eq.0)) then
msk(i,j,k) = 0
else
msk(i,j,k) = 1
end if
end do
end do
else
do k = lo(3), hi(3)
do j = lo(2), hi(2)
do i = lo(1), hi(1)
if (any(gmsk(i-ng:i+ng,j-ng:j+ng,k-ng:k+ng).eq.0)) then
msk(i,j,k) = 0
else
msk(i,j,k) = 1
end if
end do
end do
end do
end if
end subroutine warpx_build_buffer_masks
end module warpx_module
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