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quack/src/eDFT/unrestricted_mgga_exchange_derivative_discontinuity.f90

37 lines
891 B
Fortran

subroutine unrestricted_mgga_exchange_derivative_discontinuity(DFA,nEns,wEns,nGrid,weight,rhow,drhow,ExDD)
! Compute the exchange MGGA part of the derivative discontinuity
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) :: drhow(ncart,nGrid)
! Local variables
! Output variables
double precision,intent(out) :: ExDD(nEns)
! Select exchange functional
select case (DFA)
case default
call print_warning('!!! MGGA exchange derivative discontinuity not available !!!')
stop
end select
end subroutine unrestricted_mgga_exchange_derivative_discontinuity