HepLib: a C++ library for high energy physics (version 1.2)

The version 1.2 of the HepLib (a C++ Library for computations in High Energy Physics) is presented. HepLib builds on top of other well-established libraries or programs, including GINAC, FLINT, FORM, FIRE, etc., its first version has been released in Comput. Phys. Commun. 265, 107,982 (2021). Here we provide another minor upgraded version 1.2, in which the internal depended libraries or programs are updated to their latest versions, several bugs are fixed, many functional performances are improved, and lots of new features are also introduced. We also carry out experimental tests on the program FIRE, employing FLINT to enhance its performance with multivariate polynomials in the integrate-by-parts (IBP) reduction.