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QuAcK/src/eDFT/lda_exchange_individual_energy.f90

42 lines
1004 B
Fortran

subroutine lda_exchange_individual_energy(DFA,nEns,wEns,nGrid,weight,rhow,rho,Ex)
! Compute LDA exchange energy for individual states
implicit none
include 'parameters.h'
! Input variables
character(len=12),intent(in) :: DFA
integer,intent(in) :: nEns
double precision,intent(in) :: wEns(nEns)
integer,intent(in) :: nGrid
double precision,intent(in) :: weight(nGrid)
double precision,intent(in) :: rhow(nGrid)
double precision,intent(in) :: rho(nGrid)
! Output variables
double precision :: Ex
! Select correlation functional
select case (DFA)
case ('RS51')
call RS51_lda_exchange_individual_energy(nGrid,weight(:),rhow(:),rho(:),Ex)
case ('RMFL20')
! call RMFL20_lda_exchange_individual_energy(nEns,wEns,nGrid,weight(:),rhow(:),rho(:),Ex)
case default
call print_warning('!!! LDA correlation functional not available !!!')
stop
end select
end subroutine lda_exchange_individual_energy