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#! DCFT calculation for the triplet O2 using DC-06, DC-12 and CEPA0 functionals. 
#! Only two-step algorithm is tested.

refscf      = -149.65367728294785   #TEST
refmp2      = -150.17316961260252   #TEST

# DC-06
refdcftscf  = -149.08581589084218   #TEST
refdcft     = -150.190274002583237  #TEST

# DC-12                             #TEST
refdcftxscf = -149.101073338708972  #TEST
refdcftx    = -150.185859013565732  #TEST

#CEPA0
refdcftcepa = -150.188254445548893  #TEST

molecule OO {
0 3
O
O 1 R

units bohr
R = 2.000
}

set {
    r_convergence 12
    d_convergence 12
    ao_basis    none
    algorithm   twostep
    basis       cc-pcvtz
    reference   uhf 
}

set dcft_functional dc-06
energy('dcft')

compare_values(refscf, get_variable("SCF TOTAL ENERGY"), 10, "SCF Energy");                                       #TEST
compare_values(refmp2, get_variable("MP2 TOTAL ENERGY"), 10, "MP2 Energy");                                             #TEST
compare_values(refdcftscf, get_variable("DCFT SCF ENERGY"), 10, "DC-06 SCF Energy (two-step, ao_basis=none)");     #TEST
compare_values(refdcft, get_variable("DCFT TOTAL ENERGY"), 10, "DC-06 Energy (two-step, ao_basis=none)");                #TEST

set dcft_functional dc-12
energy('dcft')

compare_values(refdcftxscf, get_variable("DCFT SCF ENERGY"), 10, "DC-12 SCF Energy (two-step, ao_basis=none)");     #TEST
compare_values(refdcftx, get_variable("DCFT TOTAL ENERGY"), 10, "DC-12 Energy (two-step, ao_basis=none)");                #TEST

set dcft_functional cepa0
energy('dcft')

compare_values(refdcftcepa, get_variable("DCFT TOTAL ENERGY"), 10, "CEPA0 Energy (two-step, ao_basis=none)");                #TEST