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25 lines
477 B
Fortran
25 lines
477 B
Fortran
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subroutine rij(nWalk,r,r12)
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! Compute the interelectronic distances
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implicit none
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! Input variables
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integer,intent(in) :: nWalk
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double precision,intent(in) :: r(nWalk,1:2,1:3)
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! Output variables
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double precision,intent(out) :: r12(nWalk)
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! Compute
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r12(1:nWalk) = (r(1:nWalk,1,1)-r(1:nWalk,2,1))**2 &
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+ (r(1:nWalk,1,2)-r(1:nWalk,2,2))**2 &
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+ (r(1:nWalk,1,3)-r(1:nWalk,2,3))**2
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r12 = sqrt(r12)
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end subroutine rij
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