This program summarizes the coefficients from DIRAC (http://diracprogram.org) output file that the .ANALYZE option and *PRIVEC and .VECPRI options in **ANALYZE section are used. (c.f. http://www.diracprogram.org/doc/release-23/manual/analyze/privec.html)
cf. https://github.com/RQC-HU/sum_dirac_dfcoef/pull/70#issuecomment-1880124676