mirror of
https://github.com/LCPQ/quantum_package
synced 2024-06-30 00:44:28 +02:00
765 lines
19 KiB
Fortran
765 lines
19 KiB
Fortran
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BEGIN_PROVIDER [ integer, mrmode ]
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&BEGIN_PROVIDER [ logical, old_lambda ]
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&BEGIN_PROVIDER [ logical, no_mono_dressing ]
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implicit none
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CHARACTER(len=255) :: test
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CALL get_environment_variable("OLD_LAMBDA", test)
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old_lambda = trim(test) /= "" .and. trim(test) /= "0"
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CALL get_environment_variable("NO_MONO_DRESSING", test)
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no_mono_dressing = trim(test) /= "" .and. trim(test) /= "0"
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print *, "old", old_lambda, "mono", no_mono_dressing
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mrmode = 0
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, lambda_mrcc_old, (N_states,psi_det_size) ]
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&BEGIN_PROVIDER [ integer, lambda_mrcc_pt2_old, (0:psi_det_size) ]
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implicit none
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BEGIN_DOC
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cm/<Psi_0|H|D_m> or perturbative 1/Delta_E(m)
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END_DOC
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integer :: i,k
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double precision :: ihpsi_current(N_states)
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integer :: i_pert_count
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double precision :: hii, lambda_pert
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integer :: N_lambda_mrcc_pt2
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double precision, parameter :: x = 2.d0
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i_pert_count = 0
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lambda_mrcc_old = 0.d0
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N_lambda_mrcc_pt2 = 0
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lambda_mrcc_pt2_old(0) = 0
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do i=1,N_det_non_ref
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call i_h_psi(psi_non_ref(1,1,i), psi_ref, psi_ref_coef, N_int, N_det_ref, &
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size(psi_ref_coef,1), N_states,ihpsi_current)
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call i_H_j(psi_non_ref(1,1,i),psi_non_ref(1,1,i),N_int,hii)
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do k=1,N_states
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if (ihpsi_current(k) == 0.d0) then
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ihpsi_current(k) = 1.d-32
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endif
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lambda_mrcc_old(k,i) = psi_non_ref_coef(i,k)/ihpsi_current(k)
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if ( dabs(psi_non_ref_coef(i,k)*ihpsi_current(k)) < 1.d-5 ) then
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i_pert_count += 1
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lambda_mrcc_old(k,i) = 0.d0
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if (lambda_mrcc_pt2_old(N_lambda_mrcc_pt2) /= i) then
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N_lambda_mrcc_pt2 += 1
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lambda_mrcc_pt2_old(N_lambda_mrcc_pt2) = i
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endif
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! lambda_pert = 1.d0 / (psi_ref_energy_diagonalized(k)-hii)
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! if((ihpsi_current(k) * lambda_pert) < 0.5d0 * psi_non_ref_coef_restart(i,k) ) then
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! lambda_mrcc_old(k,i) = 0.d0
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! endif
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endif
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if (lambda_mrcc_old(k,i) > x) then
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lambda_mrcc_old(k,i) = x
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else if (lambda_mrcc_old(k,i) < -x) then
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lambda_mrcc_old(k,i) = -x
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endif
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enddo
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enddo
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lambda_mrcc_pt2_old(0) = N_lambda_mrcc_pt2
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print*,'N_det_non_ref = ',N_det_non_ref
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print*,'Number of ignored determinants = ',i_pert_count
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print*,'psi_coef_ref_ratio = ',psi_ref_coef(2,1)/psi_ref_coef(1,1)
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print*,'lambda min/max = ',maxval(dabs(lambda_mrcc_old)), minval(dabs(lambda_mrcc_old))
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, lambda_mrcc, (N_states,psi_det_size) ]
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&BEGIN_PROVIDER [ integer, lambda_mrcc_pt2, (0:psi_det_size) ]
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implicit none
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BEGIN_DOC
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! cm/<Psi_0|H|D_m> or perturbative 1/Delta_E(m)
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END_DOC
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integer :: i,k
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double precision :: ihpsi_current(N_states)
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integer :: i_pert_count
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double precision :: hii, lambda_pert
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integer :: N_lambda_mrcc_pt2
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integer :: histo(200), j
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histo = 0
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if(old_lambda) then
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lambda_mrcc = lambda_mrcc_old
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lambda_mrcc_pt2 = lambda_mrcc_pt2_old
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else
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i_pert_count = 0
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lambda_mrcc = 0.d0
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N_lambda_mrcc_pt2 = 0
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lambda_mrcc_pt2(0) = 0
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do i=1,N_det_non_ref
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call i_h_psi(psi_non_ref(1,1,i), psi_ref, psi_ref_coef, N_int, N_det_ref,&
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size(psi_ref_coef,1), N_states,ihpsi_current)
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call i_H_j(psi_non_ref(1,1,i),psi_non_ref(1,1,i),N_int,hii)
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do k=1,N_states
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if (ihpsi_current(k) == 0.d0) then
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ihpsi_current(k) = 1.d-32
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endif
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lambda_mrcc(k,i) = min(1.d-32,psi_non_ref_coef(i,k)/ihpsi_current(k) )
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lambda_pert = 1.d0 / (psi_ref_energy_diagonalized(k)-hii)
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if (lambda_pert / lambda_mrcc(k,i) < 0.5d0) then
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i_pert_count += 1
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lambda_mrcc(k,i) = 0.d0
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if (lambda_mrcc_pt2(N_lambda_mrcc_pt2) /= i) then
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N_lambda_mrcc_pt2 += 1
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lambda_mrcc_pt2(N_lambda_mrcc_pt2) = i
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endif
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endif
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enddo
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enddo
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lambda_mrcc_pt2(0) = N_lambda_mrcc_pt2
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end if
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print*,'N_det_non_ref = ',N_det_non_ref
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print*,'Number of ignored determinants = ',i_pert_count
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print*,'psi_coef_ref_ratio = ',psi_ref_coef(2,1)/psi_ref_coef(1,1)
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print*,'lambda max = ',maxval(dabs(lambda_mrcc))
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, hij_mrcc, (N_det_non_ref,N_det_ref) ]
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implicit none
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BEGIN_DOC
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! < ref | H | Non-ref > matrix
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END_DOC
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integer :: i_I, k_sd
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do i_I=1,N_det_ref
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do k_sd=1,N_det_non_ref
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call i_h_j(psi_ref(1,1,i_I),psi_non_ref(1,1,k_sd),N_int,hij_mrcc(k_sd,i_I))
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enddo
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enddo
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, delta_ij, (N_states,N_det_non_ref,N_det_ref) ]
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&BEGIN_PROVIDER [ double precision, delta_ii, (N_states,N_det_ref) ]
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implicit none
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BEGIN_DOC
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! Dressing matrix in N_det basis
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END_DOC
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integer :: i,j,m
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delta_ij = 0.d0
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delta_ii = 0.d0
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call H_apply_mrcc(delta_ij,delta_ii,N_states,N_det_non_ref,N_det_ref)
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, h_matrix_dressed, (N_det,N_det,N_states) ]
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implicit none
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BEGIN_DOC
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! Dressed H with Delta_ij
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END_DOC
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integer :: i, j,istate,ii,jj
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do istate = 1,N_states
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do j=1,N_det
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do i=1,N_det
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h_matrix_dressed(i,j,istate) = h_matrix_all_dets(i,j)
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enddo
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enddo
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do ii = 1, N_det_ref
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i =idx_ref(ii)
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h_matrix_dressed(i,i,istate) += delta_ii(istate,ii)
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do jj = 1, N_det_non_ref
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j =idx_non_ref(jj)
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h_matrix_dressed(i,j,istate) += delta_ij(istate,jj,ii)
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h_matrix_dressed(j,i,istate) += delta_ij(istate,jj,ii)
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enddo
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enddo
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enddo
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, CI_electronic_energy_dressed, (N_states_diag) ]
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&BEGIN_PROVIDER [ double precision, CI_eigenvectors_dressed, (N_det,N_states_diag) ]
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&BEGIN_PROVIDER [ double precision, CI_eigenvectors_s2_dressed, (N_states_diag) ]
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implicit none
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BEGIN_DOC
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! Eigenvectors/values of the CI matrix
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END_DOC
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integer :: i,j
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do j=1,N_states_diag
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do i=1,N_det
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CI_eigenvectors_dressed(i,j) = psi_coef(i,j)
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enddo
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enddo
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if (diag_algorithm == "Davidson") then
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integer :: istate
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istate = 1
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call davidson_diag_mrcc(psi_det,CI_eigenvectors_dressed,CI_electronic_energy_dressed,&
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size(CI_eigenvectors_dressed,1),N_det,N_states_diag,N_int,output_determinants,istate)
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else if (diag_algorithm == "Lapack") then
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double precision, allocatable :: eigenvectors(:,:), eigenvalues(:)
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allocate (eigenvectors(size(H_matrix_dressed,1),N_det))
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allocate (eigenvalues(N_det))
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call lapack_diag(eigenvalues,eigenvectors, &
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H_matrix_dressed,size(H_matrix_dressed,1),N_det)
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CI_electronic_energy_dressed(:) = 0.d0
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do i=1,N_det
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CI_eigenvectors_dressed(i,1) = eigenvectors(i,1)
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enddo
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integer :: i_state
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double precision :: s2
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i_state = 0
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if (s2_eig) then
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do j=1,N_det
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call get_s2_u0(psi_det,eigenvectors(1,j),N_det,N_det,s2)
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if(dabs(s2-expected_s2).le.0.3d0)then
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i_state += 1
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do i=1,N_det
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CI_eigenvectors_dressed(i,i_state) = eigenvectors(i,j)
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enddo
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CI_electronic_energy_dressed(i_state) = eigenvalues(j)
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CI_eigenvectors_s2_dressed(i_state) = s2
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endif
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if (i_state.ge.N_states_diag) then
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exit
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endif
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enddo
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else
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do j=1,N_states_diag
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call get_s2_u0(psi_det,eigenvectors(1,j),N_det,N_det,s2)
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i_state += 1
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do i=1,N_det
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CI_eigenvectors_dressed(i,i_state) = eigenvectors(i,j)
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enddo
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CI_electronic_energy_dressed(i_state) = eigenvalues(j)
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CI_eigenvectors_s2_dressed(i_state) = s2
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enddo
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endif
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deallocate(eigenvectors,eigenvalues)
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endif
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, CI_energy_dressed, (N_states_diag) ]
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implicit none
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BEGIN_DOC
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! N_states lowest eigenvalues of the dressed CI matrix
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END_DOC
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integer :: j
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character*(8) :: st
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call write_time(output_determinants)
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do j=1,N_states_diag
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CI_energy_dressed(j) = CI_electronic_energy_dressed(j) + nuclear_repulsion
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enddo
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END_PROVIDER
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subroutine diagonalize_CI_dressed(lambda)
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implicit none
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BEGIN_DOC
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! Replace the coefficients of the CI states by the coefficients of the
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! eigenstates of the CI matrix
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END_DOC
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double precision, intent(in) :: lambda
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integer :: i,j
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do j=1,N_states_diag
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do i=1,N_det
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psi_coef(i,j) = lambda * CI_eigenvectors_dressed(i,j) + (1.d0 - lambda) * psi_coef(i,j)
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enddo
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call normalize(psi_coef(1,j), N_det)
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enddo
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SOFT_TOUCH psi_coef
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end
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logical function is_generable(det1, det2, Nint)
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use bitmasks
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implicit none
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integer, intent(in) :: Nint
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integer(bit_kind) :: det1(Nint, 2), det2(Nint, 2)
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integer :: degree, f, exc(0:2, 2, 2), t
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integer*2 :: h1, h2, p1, p2, s1, s2
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integer, external :: searchExc
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logical, external :: excEq
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double precision :: phase
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is_generable = .false.
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call get_excitation(det1, det2, exc, degree, phase, Nint)
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if(degree == -1) return
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if(degree == 0) then
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is_generable = .true.
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return
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end if
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if(degree > 2) stop "?22??"
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!!!!!
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! call dec_exc(exc, h1, h2, p1, p2)
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! f = searchExc(toutmoun(1,1), (/h1, h2, p1, p2/), hh_shortcut(hh_shortcut(0)+1)-1)
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! !print *, toutmoun(:,1), hh_shortcut(hh_shortcut(0)+1)-1, (/h1, h2, p1, p2/)
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! if(f /= -1) then
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! is_generable = .true.
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! if(.not. excEq(toutmoun(1,f), (/h1, h2, p1, p2/))) stop "????"
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! end if
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! ! print *, f
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! return
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call decode_exc_int2(exc,degree,h1,p1,h2,p2,s1,s2)
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if(degree == 1) then
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h2 = h1
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p2 = p1
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s2 = s1
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h1 = 0
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p1 = 0
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s1 = 0
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end if
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if(h1 + (s1-1)*mo_tot_num < h2 + (s2-1)*mo_tot_num) then
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f = searchExc(hh_exists(1,1), (/s1, h1, s2, h2/), hh_shortcut(0))
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else
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f = searchExc(hh_exists(1,1), (/s2, h2, s1, h1/), hh_shortcut(0))
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end if
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if(f == -1) return
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if(p1 + (s1-1)*mo_tot_num < p2 + (s2-1)*mo_tot_num) then
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f = searchExc(pp_exists(1,hh_shortcut(f)), (/s1, p1, s2, p2/), hh_shortcut(f+1)-hh_shortcut(f))
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else
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f = searchExc(pp_exists(1,hh_shortcut(f)), (/s2, p2, s1, p1/), hh_shortcut(f+1)-hh_shortcut(f))
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end if
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if(f /= -1) is_generable = .true.
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end function
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integer function searchDet(dets, det, n, Nint)
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implicit none
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use bitmasks
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integer(bit_kind),intent(in) :: dets(Nint,2,n), det(Nint,2)
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integer, intent(in) :: nint, n
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integer :: l, h, c
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integer, external :: detCmp
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logical, external :: detEq
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l = 1
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h = n
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do while(.true.)
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searchDet = (l+h)/2
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c = detCmp(dets(1,1,searchDet), det(1,1), Nint)
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if(c == 0) return
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if(c == 1) then
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h = searchDet-1
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else
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l = searchDet+1
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end if
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if(l > h) then
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searchDet = -1
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return
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end if
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end do
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end function
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integer function searchExc(excs, exc, n)
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implicit none
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use bitmasks
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integer, intent(in) :: n
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integer*2,intent(in) :: excs(4,n), exc(4)
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integer :: l, h, c
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integer, external :: excCmp
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logical, external :: excEq
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l = 1
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h = n
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do
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searchExc = (l+h)/2
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c = excCmp(excs(1,searchExc), exc(1))
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if(c == 0) return
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if(c == 1) then
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h = searchExc-1
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else
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l = searchExc+1
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end if
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if(l > h) then
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searchExc = -1
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return
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end if
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end do
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end function
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subroutine sort_det(key, idx, N_key, Nint)
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implicit none
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integer, intent(in) :: Nint, N_key
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integer(8),intent(inout) :: key(Nint,2,N_key)
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integer,intent(inout) :: idx(N_key)
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integer(8) :: tmp(Nint, 2)
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integer :: tmpidx,i,ni
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do i=1,N_key
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idx(i) = i
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end do
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do i=N_key/2,1,-1
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call tamiser(key, idx, i, N_key, Nint, N_key)
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end do
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do i=N_key,2,-1
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do ni=1,Nint
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tmp(ni,1) = key(ni,1,i)
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tmp(ni,2) = key(ni,2,i)
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key(ni,1,i) = key(ni,1,1)
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key(ni,2,i) = key(ni,2,1)
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key(ni,1,1) = tmp(ni,1)
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key(ni,2,1) = tmp(ni,2)
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enddo
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tmpidx = idx(i)
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idx(i) = idx(1)
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idx(1) = tmpidx
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call tamiser(key, idx, 1, i-1, Nint, N_key)
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end do
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end subroutine
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subroutine sort_exc(key, N_key)
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implicit none
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integer, intent(in) :: N_key
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integer*2,intent(inout) :: key(4,N_key)
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integer*2 :: tmp(4)
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integer :: i,ni
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do i=N_key/2,1,-1
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call tamise_exc(key, i, N_key, N_key)
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end do
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do i=N_key,2,-1
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do ni=1,4
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tmp(ni) = key(ni,i)
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key(ni,i) = key(ni,1)
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key(ni,1) = tmp(ni)
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enddo
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call tamise_exc(key, 1, i-1, N_key)
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end do
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end subroutine
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logical function exc_inf(exc1, exc2)
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implicit none
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integer*2,intent(in) :: exc1(4), exc2(4)
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integer :: i
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exc_inf = .false.
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do i=1,4
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if(exc1(i) < exc2(i)) then
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exc_inf = .true.
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return
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else if(exc1(i) > exc2(i)) then
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return
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end if
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end do
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end function
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subroutine tamise_exc(key, no, n, N_key)
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use bitmasks
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implicit none
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BEGIN_DOC
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! Uncodumented : TODO
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END_DOC
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integer,intent(in) :: no, n, N_key
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integer*2,intent(inout) :: key(4, N_key)
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integer :: k,j
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integer*2 :: tmp(4)
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logical :: exc_inf
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integer :: ni
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k = no
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j = 2*k
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do while(j <= n)
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if(j < n) then
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if (exc_inf(key(1,j), key(1,j+1))) then
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j = j+1
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endif
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endif
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if(exc_inf(key(1,k), key(1,j))) then
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do ni=1,4
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tmp(ni) = key(ni,k)
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key(ni,k) = key(ni,j)
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key(ni,j) = tmp(ni)
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enddo
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k = j
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j = k+k
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else
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return
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endif
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enddo
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end subroutine
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|
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subroutine dec_exc(exc, h1, h2, p1, p2)
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implicit none
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integer :: exc(0:2,2,2), s1, s2, degree
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integer*2, intent(out) :: h1, h2, p1, p2
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|
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degree = exc(0,1,1) + exc(0,1,2)
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|
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h1 = 0
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h2 = 0
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p1 = 0
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p2 = 0
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|
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if(degree == 0) return
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|
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call decode_exc_int2(exc, degree, h1, p1, h2, p2, s1, s2)
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|
|
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h1 += mo_tot_num * (s1-1)
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p1 += mo_tot_num * (s1-1)
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|
|
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if(degree == 2) then
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h2 += mo_tot_num * (s2-1)
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p2 += mo_tot_num * (s2-1)
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if(h1 > h2) then
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s1 = h1
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h1 = h2
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h2 = s1
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end if
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if(p1 > p2) then
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s1 = p1
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p1 = p2
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p2 = s1
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end if
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else
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h2 = h1
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p2 = p1
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p1 = 0
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h1 = 0
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end if
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end subroutine
|
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|
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BEGIN_PROVIDER [ integer, N_hh_exists ]
|
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&BEGIN_PROVIDER [ integer, N_pp_exists ]
|
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&BEGIN_PROVIDER [ integer, N_ex_exists ]
|
|
implicit none
|
|
integer :: exc(0:2, 2, 2), degree, n, on, s, l, i
|
|
integer*2 :: h1, h2, p1, p2
|
|
double precision :: phase
|
|
logical,allocatable :: hh(:,:) , pp(:,:)
|
|
|
|
allocate(hh(0:mo_tot_num*2, 0:mo_tot_num*2))
|
|
allocate(pp(0:mo_tot_num*2, 0:mo_tot_num*2))
|
|
hh = .false.
|
|
pp = .false.
|
|
N_hh_exists = 0
|
|
N_pp_exists = 0
|
|
N_ex_exists = 0
|
|
|
|
n = 0
|
|
do i=1, N_det_ref
|
|
do l=1, N_det_non_ref
|
|
call get_excitation(psi_ref(1,1,i), psi_non_ref(1,1,l), exc, degree, phase, N_int)
|
|
if(degree == -1) cycle
|
|
call dec_exc(exc, h1, h2, p1, p2)
|
|
N_ex_exists += 1
|
|
if(.not. hh(h1,h2)) N_hh_exists = N_hh_exists + 1
|
|
if(.not. pp(p1,p2)) N_pp_exists = N_pp_exists + 1
|
|
hh(h1,h2) = .true.
|
|
pp(p1,p2) = .true.
|
|
end do
|
|
end do
|
|
N_pp_exists = min(N_ex_exists, N_pp_exists * N_hh_exists)
|
|
END_PROVIDER
|
|
|
|
|
|
|
|
BEGIN_PROVIDER [ integer*2, hh_exists, (4, N_hh_exists) ]
|
|
&BEGIN_PROVIDER [ integer, hh_shortcut, (0:N_hh_exists + 1) ]
|
|
&BEGIN_PROVIDER [ integer*2, pp_exists, (4, N_pp_exists) ]
|
|
implicit none
|
|
integer*2,allocatable :: num(:,:)
|
|
integer :: exc(0:2, 2, 2), degree, n, on, s, l, i
|
|
integer*2 :: h1, h2, p1, p2
|
|
double precision :: phase
|
|
logical, external :: excEq
|
|
|
|
allocate(num(4, N_ex_exists+1))
|
|
|
|
hh_shortcut = 0
|
|
hh_exists = 0
|
|
pp_exists = 0
|
|
num = 0
|
|
|
|
n = 0
|
|
do i=1, N_det_ref
|
|
do l=1, N_det_non_ref
|
|
call get_excitation(psi_ref(1,1,i), psi_non_ref(1,1,l), exc, degree, phase, N_int)
|
|
if(degree == -1) cycle
|
|
call dec_exc(exc, h1, h2, p1, p2)
|
|
n += 1
|
|
num(:, n) = (/h1, h2, p1, p2/)
|
|
end do
|
|
end do
|
|
|
|
call sort_exc(num, n)
|
|
|
|
hh_shortcut(0) = 1
|
|
hh_shortcut(1) = 1
|
|
hh_exists(:,1) = (/1_2, num(1,1), 1_2, num(2,1)/)
|
|
pp_exists(:,1) = (/1_2, num(3,1), 1_2, num(4,1)/)
|
|
s = 1
|
|
do i=2,n
|
|
if(.not. excEq(num(1,i), num(1,s))) then
|
|
s += 1
|
|
num(:, s) = num(:, i)
|
|
pp_exists(:,s) = (/1_2, num(3,s), 1_2, num(4,s)/)
|
|
if(hh_exists(2, hh_shortcut(0)) /= num(1,s) .or. &
|
|
hh_exists(4, hh_shortcut(0)) /= num(2,s)) then
|
|
hh_shortcut(0) += 1
|
|
hh_shortcut(hh_shortcut(0)) = s
|
|
hh_exists(:,hh_shortcut(0)) = (/1_2, num(1,s), 1_2, num(2,s)/)
|
|
end if
|
|
end if
|
|
end do
|
|
hh_shortcut(hh_shortcut(0)+1) = s+1
|
|
|
|
do s=2,4,2
|
|
do i=1,hh_shortcut(0)
|
|
if(hh_exists(s, i) == 0) then
|
|
hh_exists(s-1, i) = 0
|
|
else if(hh_exists(s, i) > mo_tot_num) then
|
|
hh_exists(s, i) -= mo_tot_num
|
|
hh_exists(s-1, i) = 2
|
|
end if
|
|
end do
|
|
|
|
do i=1,hh_shortcut(hh_shortcut(0)+1)-1
|
|
if(pp_exists(s, i) == 0) then
|
|
pp_exists(s-1, i) = 0
|
|
else if(pp_exists(s, i) > mo_tot_num) then
|
|
pp_exists(s, i) -= mo_tot_num
|
|
pp_exists(s-1, i) = 2
|
|
end if
|
|
end do
|
|
end do
|
|
END_PROVIDER
|
|
|
|
|
|
logical function excEq(exc1, exc2)
|
|
implicit none
|
|
integer*2, intent(in) :: exc1(4), exc2(4)
|
|
integer :: i
|
|
excEq = .false.
|
|
do i=1, 4
|
|
if(exc1(i) /= exc2(i)) return
|
|
end do
|
|
excEq = .true.
|
|
end function
|
|
|
|
|
|
integer function excCmp(exc1, exc2)
|
|
implicit none
|
|
integer*2, intent(in) :: exc1(4), exc2(4)
|
|
integer :: i
|
|
excCmp = 0
|
|
do i=1, 4
|
|
if(exc1(i) > exc2(i)) then
|
|
excCmp = 1
|
|
return
|
|
else if(exc1(i) < exc2(i)) then
|
|
excCmp = -1
|
|
return
|
|
end if
|
|
end do
|
|
end function
|
|
|
|
|
|
subroutine apply_hole(det, exc, res, ok, Nint)
|
|
use bitmasks
|
|
implicit none
|
|
integer, intent(in) :: Nint
|
|
integer*2, intent(in) :: exc(4)
|
|
integer*2 :: s1, s2, h1, h2
|
|
integer(bit_kind),intent(in) :: det(Nint, 2)
|
|
integer(bit_kind),intent(out) :: res(Nint, 2)
|
|
logical, intent(out) :: ok
|
|
integer :: ii, pos
|
|
|
|
ok = .false.
|
|
s1 = exc(1)
|
|
h1 = exc(2)
|
|
s2 = exc(3)
|
|
h2 = exc(4)
|
|
res = det
|
|
|
|
if(h1 /= 0) then
|
|
ii = (h1-1)/bit_kind_size + 1
|
|
pos = mod(h1-1, 64)!iand(h1-1,bit_kind_size-1) ! mod 64
|
|
if(iand(det(ii, s1), ishft(1_bit_kind, pos)) == 0_8) return
|
|
res(ii, s1) = ibclr(res(ii, s1), pos)
|
|
end if
|
|
|
|
ii = (h2-1)/bit_kind_size + 1
|
|
pos = mod(h2-1, 64)!iand(h2-1,bit_kind_size-1)
|
|
if(iand(det(ii, s2), ishft(1_bit_kind, pos)) == 0_8) return
|
|
res(ii, s2) = ibclr(res(ii, s2), pos)
|
|
|
|
|
|
ok = .true.
|
|
end subroutine
|
|
|
|
|
|
subroutine apply_particle(det, exc, res, ok, Nint)
|
|
use bitmasks
|
|
implicit none
|
|
integer, intent(in) :: Nint
|
|
integer*2, intent(in) :: exc(4)
|
|
integer*2 :: s1, s2, p1, p2
|
|
integer(bit_kind),intent(in) :: det(Nint, 2)
|
|
integer(bit_kind),intent(out) :: res(Nint, 2)
|
|
logical, intent(out) :: ok
|
|
integer :: ii, pos
|
|
|
|
ok = .false.
|
|
s1 = exc(1)
|
|
p1 = exc(2)
|
|
s2 = exc(3)
|
|
p2 = exc(4)
|
|
res = det
|
|
|
|
if(p1 /= 0) then
|
|
ii = (p1-1)/bit_kind_size + 1
|
|
pos = mod(p1-1, 64)!iand(p1-1,bit_kind_size-1)
|
|
if(iand(det(ii, s1), ishft(1_bit_kind, pos)) /= 0_8) return
|
|
res(ii, s1) = ibset(res(ii, s1), pos)
|
|
end if
|
|
|
|
ii = (p2-1)/bit_kind_size + 1
|
|
pos = mod(p2-1, 64)!iand(p2-1,bit_kind_size-1)
|
|
if(iand(det(ii, s2), ishft(1_bit_kind, pos)) /= 0_8) return
|
|
res(ii, s2) = ibset(res(ii, s2), pos)
|
|
|
|
|
|
ok = .true.
|
|
end subroutine
|
|
|