mirror of https://github.com/pfloos/quack
74 lines
1.5 KiB
Fortran
74 lines
1.5 KiB
Fortran
subroutine form_ladder_r(nC,nO,nV,nR,OOOO,OOVV,VVVV,t2,r2)
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! Form residuals for ladder CCD
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implicit none
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! Input variables
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integer,intent(in) :: nC,nO,nV,nR
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double precision,intent(in) :: t2(nO,nO,nV,nV)
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double precision,intent(in) :: OOOO(nO,nO,nO,nO)
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double precision,intent(in) :: OOVV(nO,nO,nV,nV)
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double precision,intent(in) :: VVVV(nV,nV,nV,nV)
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! Local variables
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integer :: i,j,k,l
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integer :: a,b,c,d
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double precision,allocatable :: y(:,:,:,:)
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! Output variables
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double precision,intent(out) :: r2(nO,nO,nV,nV)
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r2(:,:,:,:) = 0d0
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allocate(y(nO,nO,nO,nO))
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y(:,:,:,:) = 0d0
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do i=nC+1,nO
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do j=nC+1,nO
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do k=nC+1,nO
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do l=nC+1,nO
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do c=1,nV-nR
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do d=1,nV-nR
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y(i,j,k,l) = y(i,j,k,l) + t2(i,j,c,d)*OOVV(k,l,c,d)
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end do
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end do
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end do
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end do
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end do
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end do
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do i=nC+1,nO
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do j=nC+1,nO
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do a=1,nV-nR
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do b=1,nV-nR
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do k=nC+1,nO
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do l=nC+1,nO
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r2(i,j,a,b) = r2(i,j,a,b) + 0.5d0*t2(k,l,a,b)*OOOO(i,j,k,l)
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end do
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end do
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do c=1,nV-nR
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do d=1,nV-nR
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r2(i,j,a,b) = r2(i,j,a,b) + 0.5d0*VVVV(c,d,a,b)*t2(i,j,c,d)
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end do
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end do
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do k=nC+1,nO
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do l=nC+1,nO
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r2(i,j,a,b) = r2(i,j,a,b) + 0.25d0*y(i,j,k,l)*t2(k,l,a,b)
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end do
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end do
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end do
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end do
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end do
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end do
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end subroutine
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