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https://github.com/pfloos/quack
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68 lines
1.9 KiB
Fortran
68 lines
1.9 KiB
Fortran
subroutine exchange_derivative_discontinuity(rung,DFA,nEns,wEns,nCC,aCC,nGrid,weight,rhow,drhow,&
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Cx_choice,doNcentered,kappa,ExDD)
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! Compute the exchange part of the derivative discontinuity
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implicit none
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include 'parameters.h'
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! Input variables
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integer,intent(in) :: rung
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integer,intent(in) :: DFA
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integer,intent(in) :: nEns
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double precision,intent(in) :: wEns(nEns)
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integer,intent(in) :: nCC
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double precision,intent(in) :: aCC(nCC,nEns-1)
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integer,intent(in) :: nGrid
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double precision,intent(in) :: weight(nGrid)
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double precision,intent(in) :: rhow(nGrid)
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double precision,intent(in) :: drhow(ncart,nGrid)
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integer,intent(in) :: Cx_choice
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logical,intent(in) :: doNcentered
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double precision,intent(in) :: kappa(nEns)
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!Local variables
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!Output variables
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double precision,intent(out) :: ExDD(nEns)
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select case (rung)
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! Hartree calculation
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case(0)
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ExDD(:) = 0d0
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! LDA functionals
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case(1)
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call lda_exchange_derivative_discontinuity(DFA,nEns,wEns(:),nCC,aCC,nGrid,weight(:),&
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rhow(:),Cx_choice,doNcentered,kappa,ExDD(:))
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! GGA functionals
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case(2)
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call gga_exchange_derivative_discontinuity(DFA,nEns,wEns(:),nGrid,weight(:),rhow(:),drhow(:,:),ExDD(:))
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! MGGA functionals
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case(3)
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call mgga_exchange_derivative_discontinuity(DFA,nEns,wEns(:),nGrid,weight(:),rhow(:),drhow(:,:),ExDD(:))
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! Hybrid functionals
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case(4)
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call hybrid_exchange_derivative_discontinuity(DFA,nEns,wEns(:),nCC,aCC,nGrid,weight(:),&
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rhow(:),Cx_choice,doNcentered,ExDD(:))
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end select
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end subroutine exchange_derivative_discontinuity
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