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https://github.com/pfloos/quack
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28 lines
542 B
Fortran
28 lines
542 B
Fortran
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subroutine MOtoAO_transform(nBas,S,c,A)
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! Perform MO to AO transformation of a matrix A for a given metric S
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! and coefficients c
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implicit none
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! Input variables
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integer,intent(in) :: nBas
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double precision,intent(in) :: S(nBas,nBas),c(nBas,nBas)
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! Local variables
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double precision,allocatable :: Sc(:,:)
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! Output variables
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double precision,intent(inout):: A(nBas,nBas)
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! Memory allocation
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allocate(Sc(nBas,nBas))
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Sc = matmul(S,c)
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A = matmul(Sc,matmul(A,transpose(Sc)))
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end subroutine MOtoAO_transform
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