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module solv_cap
integer, private, save :: Ng1=0, Ng2=0
contains
subroutine FourirG(G)
real, intent(in out), dimension(0:,0:) :: G
complex, allocatable, dimension(:,:) :: t
allocate( t(0:2*Ng1-1,0:2*Ng2-1) )
t(0:Ng1,0:Ng2-1) = G(:,0:Ng2-1) ! Fill one quadrant (one extra row)
t(0:Ng1,Ng2:2*Ng2-1) = G(:,Ng2:1:-1) ! This quadrant using symmetry
end subroutine FourirG
end module solv_cap
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