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Accelerated diag_h_mat_elem
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@ -186,10 +186,8 @@ subroutine $subroutine_diexcOrg(key_in,key_mask,hole_1,particl_1,hole_2, particl
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particle(j,1) = iand(xor(particl_1(j,1),key_in(j,1)),particl_1(j,1))
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particle(j,2) = iand(xor(particl_1(j,2),key_in(j,2)),particl_1(j,2))
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enddo
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call bitstring_to_list(particle(1,1),occ_particle(1,1),N_elec_in_key_part_1(1),N_int)
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call bitstring_to_list(particle(1,2),occ_particle(1,2),N_elec_in_key_part_1(2),N_int)
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call bitstring_to_list(hole(1,1),occ_hole(1,1),N_elec_in_key_hole_1(1),N_int)
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call bitstring_to_list(hole(1,2),occ_hole(1,2),N_elec_in_key_hole_1(2),N_int)
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call bitstring_to_list_ab(particle,occ_particle,N_elec_in_key_part_1,N_int)
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call bitstring_to_list_ab(hole,occ_hole,N_elec_in_key_hole_1,N_int)
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allocate (ia_ja_pairs(2,0:(elec_alpha_num)*mo_tot_num,2), &
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ib_jb_pairs(2,0:(elec_alpha_num)*mo_tot_num))
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@ -252,10 +250,8 @@ subroutine $subroutine_diexcOrg(key_in,key_mask,hole_1,particl_1,hole_2, particl
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particle_tmp(j,2) = iand(xor(particl_2(j,2),hole(j,2)),particl_2(j,2))
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enddo
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call bitstring_to_list(particle_tmp(1,1),occ_particle_tmp(1,1),N_elec_in_key_part_2(1),N_int)
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call bitstring_to_list(particle_tmp(1,2),occ_particle_tmp(1,2),N_elec_in_key_part_2(2),N_int)
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call bitstring_to_list(hole_tmp (1,1),occ_hole_tmp (1,1),N_elec_in_key_hole_2(1),N_int)
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call bitstring_to_list(hole_tmp (1,2),occ_hole_tmp (1,2),N_elec_in_key_hole_2(2),N_int)
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call bitstring_to_list_ab(particle_tmp,occ_particle_tmp,N_elec_in_key_part_2,N_int)
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call bitstring_to_list_ab(hole_tmp,occ_hole_tmp,N_elec_in_key_hole_2,N_int)
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! hole = a^(+)_j_a(ispin) a_i_a(ispin)|key_in> : mono exc :: orb(i_a,ispin) --> orb(j_a,ispin)
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hole_save = hole
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@ -447,10 +443,8 @@ subroutine $subroutine_monoexc(key_in, hole_1,particl_1,i_generator,iproc_in $pa
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particle(j,2) = iand(xor(particl_1(j,2),key_in(j,2)),particl_1(j,2))
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enddo
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call bitstring_to_list(particle(1,1),occ_particle(1,1),N_elec_in_key_part_1(1),N_int)
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call bitstring_to_list(particle(1,2),occ_particle(1,2),N_elec_in_key_part_1(2),N_int)
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call bitstring_to_list(hole (1,1),occ_hole (1,1),N_elec_in_key_hole_1(1),N_int)
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call bitstring_to_list(hole (1,2),occ_hole (1,2),N_elec_in_key_hole_1(2),N_int)
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call bitstring_to_list_ab(particle,occ_particle,N_elec_in_key_part_1,N_int)
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call bitstring_to_list_ab(hole,occ_hole,N_elec_in_key_hole_1,N_int)
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allocate (ia_ja_pairs(2,0:(elec_alpha_num)*mo_tot_num,2))
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do ispin=1,2
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@ -361,6 +361,44 @@ subroutine bitstring_to_list_ab( string, list, n_elements, Nint)
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integer, intent(out) :: list(Nint*bit_kind_size,2)
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integer, intent(out) :: n_elements(2)
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integer :: i, j, ishift
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integer(bit_kind) :: l
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n_elements(1) = 0
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n_elements(2) = 0
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ishift = 1
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do i=1,Nint
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l = string(i,1)
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do while (l /= 0_bit_kind)
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n_elements(1) = n_elements(1)+1
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j = trailz(l)
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list(n_elements(1),1) = ishift+j
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l = ibclr(l,j)
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enddo
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l = string(i,2)
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do while (l /= 0_bit_kind)
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n_elements(2) = n_elements(2)+1
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j = trailz(l)
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list(n_elements(2),2) = ishift+j
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l = ibclr(l,j)
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enddo
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ishift = ishift + bit_kind_size
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enddo
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end
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subroutine bitstring_to_list_ab_old( string, list, n_elements, Nint)
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use bitmasks
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implicit none
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BEGIN_DOC
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! Gives the inidices(+1) of the bits set to 1 in the bit string
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! For alpha/beta determinants
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END_DOC
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integer, intent(in) :: Nint
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integer(bit_kind), intent(in) :: string(Nint,2)
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integer, intent(out) :: list(Nint*bit_kind_size,2)
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integer, intent(out) :: n_elements(2)
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integer :: i, ishift
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integer(bit_kind) :: l
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