File list (Check if you may need any files):
phase_div
.........\Codes
.........\.....\Compare.m
.........\.....\data
.........\.....\....\cam32.mat
.........\.....\....\Setup_real.m
.........\.....\....\Setup_real.m~
.........\.....\Driver.m
.........\.....\full_cost_dir
.........\.....\.............\full_cost.m
.........\.....\.............\full_M_inner_prod.m
.........\.....\.............\full_M_inverse.m
.........\.....\.............\full_output_fn.m
.........\.....\.............\Full_test_fd.m
.........\.....\.............\f_initial.m
.........\.....\.............\Hmult_full.m
.........\.....\.............\Min_full_cost.m
.........\.....\.............\old
.........\.....\.............\...\full_B0_inv.m
.........\.....\.............\...\full_cost.m
.........\.....\.............\...\Full_lbfgs_driver.m
.........\.....\.............\...\full_output_fn.m
.........\.....\.............\...\Full_test_fd.m
.........\.....\.............\...\f_initial.m
.........\.....\.............\...\Hmult_full.m
.........\.....\.............\...\Min_full_cost.m
.........\.....\.............\...\old_output_fn.m
.........\.....\.............\...\tmp.m
.........\.....\lbfgs
.........\.....\.....\bfgs_rec.m
.........\.....\.....\lbfgs.m
.........\.....\.....\line_search.m
.........\.....\.....\my_zoom.m
.........\.....\.....\old
.........\.....\.....\...\bfgs_rec.m
.........\.....\.....\...\lbfgs.m
.........\.....\.....\...\line_search.m
.........\.....\.....\...\Zoom.m
.........\.....\.....\Zoom.m
.........\.....\ncgtr
.........\.....\.....\bndry_solve.m
.........\.....\.....\cg.m
.........\.....\.....\Hmult_fd.m
.........\.....\.....\ncgtr.m
.........\.....\.....\ncgtr.m~
.........\.....\.....\old
.........\.....\.....\...\cg.m
.........\.....\.....\...\Hmult_fd.m
.........\.....\.....\...\min_solve.m
.........\.....\.....\...\ncgtr.m
.........\.....\.....\old1
.........\.....\.....\....\cg.m
.........\.....\.....\....\ncgtr.m
.........\.....\.....\old2
.........\.....\.....\....\bndry_solve.m
.........\.....\.....\....\cg.m
.........\.....\.....\....\Hmult_fd.m
.........\.....\.....\....\ncgtr.m
.........\.....\.....\....\new_cg.m
.........\.....\.....\....\old_bndry_solve.m
.........\.....\.....\....\old_cg.m
.........\.....\Plot_cost.m
.........\.....\Plot_images.m
.........\.....\Reduced2full.m
.........\.....\reduced_cost_dir
.........\.....\................\Hmult_reduced.m
.........\.....\................\Hmult_red_test.m
.........\.....\................\Min_reduced_cost.m
.........\.....\................\old
.........\.....\................\...\Hmult_reduced.m
.........\.....\................\...\Hmult_red_test.m
.........\.....\................\...\Min_reduced_cost.m
.........\.....\................\...\reduced_B0_inv.m
.........\.....\................\...\reduced_cost.m
.........\.....\................\...\reduced_cost_temp.m
.........\.....\................\...\reduced_output_fn.m
.........\.....\................\...\Test_grad.m
.........\.....\................\...\Test_Hmult.m
.........\.....\................\reduced_cost.m
.........\.....\................\reduced_M_inner_prod.m
.........\.....\................\reduced_M_inverse.m
.........\.....\................\reduced_output_fn.m
.........\.....\................\Test_grad.m
.........\.....\................\Test_Hmult.m
.........\.....\SAMPLE.txt
.........\.....\setpath.m
.........\.....\simulate
.........\.....\........\Setup_sim.m
.........\.....\........\Setup_sim.m~
.........\.....\spectrum
.........\.....\........\Hmult1_fd.m~
.........\.....\........\Hmult_fd1.m
.........\.....\........\Hmult_fd1.m~
.........\.....\........\Spectrum.m
.........\.....\........\Spectrum.m~
.........\.....\........\test.m~
.........\.....\utilities
.........\.....\.........\extend.m
.........\.....\.........\extract.m
.........\.....\.........\ext_shift.m