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module warpx_ES_utils
use iso_c_binding
use amrex_fort_module, only : amrex_real
implicit none
contains
subroutine warpx_sum_fine_to_crse_nodal_3d (lo, hi, lrat, crse, clo, chi, fine, flo, fhi) &
bind(c, name="warpx_sum_fine_to_crse_nodal_3d")
integer, intent(in) :: lo(3), hi(3)
integer, intent(in) :: clo(3), chi(3)
integer, intent(in) :: flo(3), fhi(3)
integer, intent(in) :: lrat(3)
real(amrex_real), intent(inout) :: crse(clo(1):chi(1),clo(2):chi(2),clo(3):chi(3))
real(amrex_real), intent(in) :: fine(flo(1):fhi(1),flo(2):fhi(2),flo(3):fhi(3))
integer :: i, j, k, ii, jj, kk
do k = lo(3), hi(3)
kk = k * lrat(3)
do j = lo(2), hi(2)
jj = j * lrat(2)
do i = lo(1), hi(1)
ii = i * lrat(1)
crse(i,j,k) = fine(ii,jj,kk) + &
! These six fine nodes are shared by two coarse nodes...
0.5d0 * (fine(ii-1,jj,kk) + fine(ii+1,jj,kk) + &
fine(ii,jj-1,kk) + fine(ii,jj+1,kk) + &
fine(ii,jj,kk-1) + fine(ii,jj,kk+1)) + &
! ... these twelve are shared by four...
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-1) + fine(ii+1,jj,kk-1) + &
fine(ii-1,jj,kk+1) + fine(ii+1,jj,kk+1) + &
fine(ii-1,jj-1,kk) + fine(ii+1,jj-1,kk) + &
fine(ii-1,jj+1,kk) + fine(ii+1,jj+1,kk)) + &
! ... and these eight are shared by eight
0.125d0 * (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) + &
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))
! ... note that we have 27 nodes in total...
crse(i,j,k) = crse(i,j,k) / 8.d0
end do
end do
end do
end subroutine warpx_sum_fine_to_crse_nodal_3d
subroutine warpx_sum_fine_to_crse_nodal_2d (lo, hi, lrat, crse, clo, chi, fine, flo, fhi) &
bind(c, name="warpx_sum_fine_to_crse_nodal_2d")
integer, intent(in) :: lo(2), hi(2)
integer, intent(in) :: clo(2), chi(2)
integer, intent(in) :: flo(2), fhi(2)
integer, intent(in) :: lrat(2)
real(amrex_real), intent(inout) :: crse(clo(1):chi(1),clo(2):chi(2))
real(amrex_real), intent(in) :: fine(flo(1):fhi(1),flo(2):fhi(2))
integer :: i, j, ii, jj
do j = lo(2), hi(2)
jj = j * lrat(2)
do i = lo(1), hi(1)
ii = i * lrat(1)
crse(i,j) = fine(ii,jj) + &
! These four fine nodes are shared by two coarse nodes...
0.5d0 * (fine(ii-1,jj) + fine(ii+1,jj) + &
fine(ii,jj-1) + fine(ii,jj+1)) + &
! ... and these four are shared by four...
0.25d0 * (fine(ii-1,jj-1) + fine(ii-1,jj+1) + &
fine(ii-1,jj+1) + fine(ii+1,jj+1))
! ... note that we have 9 nodes in total...
crse(i,j) = crse(i,j) / 4.d0
end do
end do
end subroutine warpx_sum_fine_to_crse_nodal_2d
subroutine warpx_zero_out_bndry_3d (lo, hi, input_data, bndry_data, mask) &
bind(c,name='warpx_zero_out_bndry_3d')
integer(c_int), intent(in ) :: lo(3), hi(3)
double precision, intent(inout) :: input_data(lo(1):hi(1),lo(2):hi(2),lo(3):hi(3))
double precision, intent(inout) :: bndry_data(lo(1)-1:hi(1)+1,lo(2)-1:hi(2)+1,lo(3)-1:hi(3)+1)
integer(c_int), intent(in ) :: mask (lo(1):hi(1),lo(2):hi(2),lo(3):hi(3))
integer :: i, j, k
do k = lo(3), hi(3)
do j = lo(2), hi(2)
do i = lo(1), hi(1)
if (mask(i,j,k) .eq. 1) then
bndry_data(i,j,k) = input_data(i,j,k)
input_data(i,j,k) = 0.d0
end if
end do
end do
end do
end subroutine warpx_zero_out_bndry_3d
subroutine warpx_zero_out_bndry_2d (lo, hi, input_data, bndry_data, mask) &
bind(c,name='warpx_zero_out_bndry_2d')
integer(c_int), intent(in ) :: lo(2), hi(2)
double precision, intent(inout) :: input_data(lo(1):hi(1),lo(2):hi(2))
double precision, intent(inout) :: bndry_data(lo(1)-1:hi(1)+1,lo(2)-1:hi(2)+1)
integer(c_int), intent(in ) :: mask (lo(1):hi(1),lo(2):hi(2))
integer :: i, j
do j = lo(2), hi(2)
do i = lo(1), hi(1)
if (mask(i,j) .eq. 1) then
bndry_data(i,j) = input_data(i,j)
input_data(i,j) = 0.d0
end if
end do
end do
end subroutine warpx_zero_out_bndry_2d
subroutine warpx_build_mask_3d (lo, hi, tmp_mask, mask, ncells) &
bind(c,name='warpx_build_mask_3d')
integer(c_int), intent(in ) :: lo(3), hi(3)
integer(c_int), intent(in ) :: ncells
integer(c_int), intent(in ) :: tmp_mask(lo(1)-ncells:hi(1)+ncells,lo(2)-ncells:hi(2)+ncells,lo(3)-ncells:hi(3)+ncells)
integer(c_int), intent(inout) :: mask (lo(1):hi(1),lo(2):hi(2),lo(3):hi(3))
integer :: i, j, k, ii, jj, kk, total
do k = lo(3), hi(3)
do j = lo(2), hi(2)
do i = lo(1), hi(1)
total = 0
do ii = i-ncells, i+ncells
do jj = j-ncells, j+ncells
do kk = k-ncells, k+ncells
total = total + tmp_mask(ii, jj, kk)
end do
end do
end do
if (total .gt. 0) then
mask(i,j,k) = 1
else
mask(i,j,k) = 0
end if
end do
end do
end do
end subroutine warpx_build_mask_3d
subroutine warpx_build_mask_2d (lo, hi, tmp_mask, mask, ncells) &
bind(c,name='warpx_build_mask_2d')
integer(c_int), intent(in ) :: lo(2), hi(2)
integer(c_int), intent(in ) :: ncells
integer(c_int), intent(in ) :: tmp_mask(lo(1)-ncells:hi(1)+ncells,lo(2)-ncells:hi(2)+ncells)
integer(c_int), intent(inout) :: mask (lo(1):hi(1),lo(2):hi(2))
integer :: i, j, ii, jj, total
do j = lo(2), hi(2)
do i = lo(1), hi(1)
total = 0
do ii = i-ncells, i+ncells
do jj = j-ncells, j+ncells
total = total + tmp_mask(ii, jj)
end do
end do
if (total .gt. 0) then
mask(i,j) = 1
else
mask(i,j) = 0
end if
end do
end do
end subroutine warpx_build_mask_2d
end module warpx_ES_utils
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