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This contains the Molcas interface to Chan group's DMRG code (Block)

Written by N. Nakatani, Hokkaido University, Japan, Oct. 2014
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The latest version of Block DMRG code can be obtained from
https://github.com/sanshar/Block.git

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Files have been changed and/or added
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# For DMRG-CASSCF

New Files:
src/block_dmrg_util/blockctl.f
src/block_dmrg_util/block_densi_rasscf.f
src/rasscf/dmrgctl.f

Modified:
src/Include/rasscf.fh
src/rasscf/rasscf.f
src/rasscf/input_ras.fh
src/rasscf/inppri.f
src/rasscf/neworb_rasscf.f
src/rasscf/outctl.f
src/rasscf/proc_inp.f
src/rasscf/sxctl.f

# For DMRG-CASPT2

New Files:
src/block_dmrg_util/cu4f3.f
src/block_dmrg_util/mkxmat.f
src/block_dmrg_util/two2onerdm.f
src/caspt2/stini_cumulant.f
src/caspt2/poly2dm.f
src/caspt2/poly3dm.f
src/caspt2/mkfg3dm.f
src/caspt2/mkfg3cu4.f

Modified:
src/Include/caspt2.fh
src/caspt2/caspt2.f
src/caspt2/readin_caspt2.f
src/caspt2/grpini.f
src/caspt2/mkrptorb.f
src/caspt2/poly0.f

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options (rasscf) : implemented
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DMRG : Turn on DMRG calc. for CASCI,
       followed by an integer number specifying max number of renormalized basis to be kept.

3RDM : Calculate 3-electron density matrix for cu4-CASPT2 calculation

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options (caspt2) : implemented
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CUMUlant : Turn into cu4-CASPT2 calc. using 1,2,3-body density matrices from DMRG calc.

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