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quantum_package/plugins/Hartree_Fock/SCF.irp.f

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program scf
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BEGIN_DOC
! Produce `Hartree_Fock` MO orbital
! output: mo_basis.mo_tot_num mo_basis.mo_label mo_basis.ao_md5 mo_basis.mo_coef mo_basis.mo_occ
! output: hartree_fock.energy
! optional: mo_basis.mo_coef
END_DOC
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call create_guess
call orthonormalize_mos
call run
end
subroutine create_guess
implicit none
BEGIN_DOC
! Create an MO guess if no MOs are present in the EZFIO directory
END_DOC
logical :: exists
PROVIDE ezfio_filename
call ezfio_has_mo_basis_mo_coef(exists)
if (.not.exists) then
if (mo_guess_type == "HCore") then
mo_coef = ao_ortho_lowdin_coef
TOUCH mo_coef
mo_label = 'Guess'
call mo_as_eigvectors_of_mo_matrix(mo_mono_elec_integral,size(mo_mono_elec_integral,1),size(mo_mono_elec_integral,2),mo_label)
SOFT_TOUCH mo_coef mo_label
else if (mo_guess_type == "Huckel") then
call huckel_guess
else
print *, 'Unrecognized MO guess type : '//mo_guess_type
stop 1
endif
endif
end
subroutine run
use bitmasks
implicit none
BEGIN_DOC
! Run SCF calculation
END_DOC
double precision :: SCF_energy_before,SCF_energy_after,diag_H_mat_elem
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double precision :: E0
integer :: i_it, i, j, k
E0 = HF_energy
mo_label = "Canonical"
call damping_SCF
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end