libcint: libcint (an open source library for analytical Gaussian integrals) libcint: libcint: libcint: libcint is an open source library for analytical Gaussian integrals. libcint: It provides C/Fortran API to evaluate one-electron / two-electron libcint: integrals for Cartesian / real-spheric / spinor Gaussian type libcint: functions. libcint: libcint: libcint: libcint: