fmri_equal
r = fmri_equal(ud_ctarg, ud_oldtarg);
r = fmri_equal(ud_oldtarg, new_dpt_pgroup->sc_pgroup_fmri);
r = fmri_equal(ud_ctarg, ud_oldtarg);
r = fmri_equal(ud_ctarg, new_dpt_pgroup->sc_pgroup_fmri);
r = fmri_equal(new_dpt_pgroup->sc_pgroup_fmri, ud_oldtarg);
r = fmri_equal(ud_ctarg, new_dpt_pgroup->sc_pgroup_fmri);
r = fmri_equal(dpt_pgroup->sc_pgroup_fmri, ud_oldtarg);