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QuantumPackage/plugins/local/tc_int/jast_grad_full.irp.f

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2024-06-26 11:15:30 +02:00
! ---
subroutine get_grad1_u12_for_tc(ipoint, n_grid2, resx, resy, resz, res)
BEGIN_DOC
!
! resx(ipoint) = [grad1 u(r1,r2)]_x1
! resy(ipoint) = [grad1 u(r1,r2)]_y1
! resz(ipoint) = [grad1 u(r1,r2)]_z1
! res (ipoint) = -0.5 [grad1 u(r1,r2)]^2
!
! We use:
! grid for r1
! extra_grid for r2
!
END_DOC
implicit none
integer, intent(in) :: ipoint, n_grid2
double precision, intent(out) :: resx(n_grid2), resy(n_grid2), resz(n_grid2), res(n_grid2)
integer :: jpoint
double precision :: env_r1, tmp
double precision :: grad1_env(3), r1(3)
double precision, allocatable :: env_r2(:)
double precision, allocatable :: u2b_r12(:), gradx1_u2b(:), grady1_u2b(:), gradz1_u2b(:)
double precision, allocatable :: u2b_mu(:), gradx1_mu(:), grady1_mu(:), gradz1_mu(:)
double precision, allocatable :: u2b_nu(:), gradx1_nu(:), grady1_nu(:), gradz1_nu(:)
double precision, external :: env_nucl
r1(1) = final_grid_points(1,ipoint)
r1(2) = final_grid_points(2,ipoint)
r1(3) = final_grid_points(3,ipoint)
! j2e_type .eq. "Boys_Handy"
! env_type .eq. "None"
! j1e_type .eq "None"
call get_grad1_u12_r1_2e(r1, n_grid2, resx(1), resy(1), resz(1))
do jpoint = 1, n_points_extra_final_grid
res(jpoint) = -0.5d0 * (resx(jpoint) * resx(jpoint) + resy(jpoint) * resy(jpoint) + resz(jpoint) * resz(jpoint))
enddo
return
end
! ---