2020-03-26 16:57:46 +01:00
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subroutine form_u(nC,nO,nV,nR,OOOO,VVVV,OVOV,t2,u)
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2019-03-19 10:13:33 +01:00
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! Form linear array in CCD
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implicit none
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! Input variables
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2020-03-26 16:57:46 +01:00
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integer,intent(in) :: nC,nO,nV,nR
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2019-03-19 10:13:33 +01:00
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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) :: VVVV(nV,nV,nV,nV)
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double precision,intent(in) :: OVOV(nO,nV,nO,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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! Output variables
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double precision,intent(out) :: u(nO,nO,nV,nV)
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u(:,:,:,:) = 0d0
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2020-03-26 16:57:46 +01:00
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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 c=1,nV-nR
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do d=1,nV-nR
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2019-03-19 10:13:33 +01:00
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u(i,j,a,b) = u(i,j,a,b) + 0.5d0*VVVV(a,b,c,d)*t2(i,j,c,d)
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enddo
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enddo
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enddo
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enddo
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enddo
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enddo
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2020-03-26 16:57:46 +01:00
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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 a=1,nV-nR
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do b=1,nV-nR
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2019-03-19 10:13:33 +01:00
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u(i,j,a,b) = u(i,j,a,b) + 0.5d0*OOOO(k,l,i,j)*t2(k,l,a,b)
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enddo
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enddo
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enddo
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enddo
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enddo
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enddo
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2020-03-26 16:57:46 +01:00
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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 a=1,nV-nR
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do b=1,nV-nR
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do c=1,nV-nR
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2019-03-19 10:13:33 +01:00
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u(i,j,a,b) = u(i,j,a,b) - OVOV(k,b,j,c)*t2(i,k,a,c) &
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+ OVOV(k,a,j,c)*t2(i,k,b,c) &
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- OVOV(k,a,i,c)*t2(j,k,b,c) &
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+ OVOV(k,b,i,c)*t2(j,k,a,c)
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enddo
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enddo
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enddo
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enddo
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enddo
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enddo
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end subroutine form_u
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