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qp2/src/casscf_cipsi/bielec.irp.f

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2023-06-18 21:42:40 +02:00
BEGIN_PROVIDER [real*8, bielec_PQxx, (mo_num, mo_num,n_core_inact_act_orb,n_core_inact_act_orb)]
BEGIN_DOC
! bielec_PQxx : integral (pq|xx) with p,q arbitrary, x core or active
! indices are unshifted orbital numbers
END_DOC
implicit none
integer :: i,j,ii,jj,p,q,i3,j3,t3,v3
real*8 :: mo_two_e_integral
bielec_PQxx(:,:,:,:) = 0.d0
PROVIDE mo_two_e_integrals_in_map
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(i,ii,j,jj,i3,j3) &
!$OMP SHARED(n_core_inact_orb,list_core_inact,mo_num,bielec_PQxx, &
!$OMP n_act_orb,mo_integrals_map,list_act)
!$OMP DO
do i=1,n_core_inact_orb
ii=list_core_inact(i)
do j=i,n_core_inact_orb
jj=list_core_inact(j)
call get_mo_two_e_integrals_i1j1(ii,jj,mo_num,bielec_PQxx(1,1,i,j),mo_integrals_map)
bielec_PQxx(:,:,j,i)=bielec_PQxx(:,:,i,j)
end do
do j=1,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_i1j1(ii,jj,mo_num,bielec_PQxx(1,1,i,j3),mo_integrals_map)
bielec_PQxx(:,:,j3,i)=bielec_PQxx(:,:,i,j3)
end do
end do
!$OMP END DO
!$OMP DO
do i=1,n_act_orb
ii=list_act(i)
i3=i+n_core_inact_orb
do j=i,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_i1j1(ii,jj,mo_num,bielec_PQxx(1,1,i3,j3),mo_integrals_map)
bielec_PQxx(:,:,j3,i3)=bielec_PQxx(:,:,i3,j3)
end do
end do
!$OMP END DO
!$OMP END PARALLEL
END_PROVIDER
BEGIN_PROVIDER [real*8, bielec_PxxQ, (mo_num,n_core_inact_act_orb,n_core_inact_act_orb, mo_num)]
BEGIN_DOC
! bielec_PxxQ : integral (px|xq) with p,q arbitrary, x core or active
! indices are unshifted orbital numbers
END_DOC
implicit none
integer :: i,j,ii,jj,p,q,i3,j3,t3,v3
double precision, allocatable :: integrals_array(:,:)
real*8 :: mo_two_e_integral
PROVIDE mo_two_e_integrals_in_map
bielec_PxxQ = 0.d0
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(i,ii,j,jj,i3,j3,integrals_array) &
!$OMP SHARED(n_core_inact_orb,list_core_inact,mo_num,bielec_PxxQ, &
!$OMP n_act_orb,mo_integrals_map,list_act)
allocate(integrals_array(mo_num,mo_num))
!$OMP DO
do i=1,n_core_inact_orb
ii=list_core_inact(i)
do j=i,n_core_inact_orb
jj=list_core_inact(j)
call get_mo_two_e_integrals_ij(ii,jj,mo_num,integrals_array,mo_integrals_map)
do q=1,mo_num
do p=1,mo_num
bielec_PxxQ(p,i,j,q)=integrals_array(p,q)
bielec_PxxQ(p,j,i,q)=integrals_array(q,p)
end do
end do
end do
do j=1,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_ij(ii,jj,mo_num,integrals_array,mo_integrals_map)
do q=1,mo_num
do p=1,mo_num
bielec_PxxQ(p,i,j3,q)=integrals_array(p,q)
bielec_PxxQ(p,j3,i,q)=integrals_array(q,p)
end do
end do
end do
end do
!$OMP END DO
! (ip|qj)
!$OMP DO
do i=1,n_act_orb
ii=list_act(i)
i3=i+n_core_inact_orb
do j=i,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_ij(ii,jj,mo_num,integrals_array,mo_integrals_map)
do q=1,mo_num
do p=1,mo_num
bielec_PxxQ(p,i3,j3,q)=integrals_array(p,q)
bielec_PxxQ(p,j3,i3,q)=integrals_array(q,p)
end do
end do
end do
end do
!$OMP END DO
deallocate(integrals_array)
!$OMP END PARALLEL
END_PROVIDER
BEGIN_PROVIDER [real*8, bielecCI, (n_act_orb,n_act_orb,n_act_orb, mo_num)]
BEGIN_DOC
! bielecCI : integrals (tu|vp) with p arbitrary, tuv active
! index p runs over the whole basis, t,u,v only over the active orbitals
END_DOC
implicit none
integer :: i,j,k,p,t,u,v
double precision, external :: mo_two_e_integral
PROVIDE mo_two_e_integrals_in_map
!$OMP PARALLEL DO DEFAULT(NONE) &
!$OMP PRIVATE(i,j,k,p,t,u,v) &
!$OMP SHARED(mo_num,n_act_orb,list_act,bielecCI)
do p=1,mo_num
do j=1,n_act_orb
u=list_act(j)
do k=1,n_act_orb
v=list_act(k)
do i=1,n_act_orb
t=list_act(i)
bielecCI(i,k,j,p) = mo_two_e_integral(t,u,v,p)
end do
end do
end do
end do
!$OMP END PARALLEL DO
END_PROVIDER