> For the complete documentation index, see [llms.txt](https://heplib.gitbook.io/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://heplib.gitbook.io/doc/master.md).

# About HepLib

**HepLib** is a C++ library for computations in *High Energy Physics* with the help of **GiNaC** language which is a C++ library used to perform symbolic computations.

**HepLib** combines several well-known packages to get high efficiency, including

* **Fermat** to perform multivariate polynomial simplification, matrix operators, ...
* **FORM** to perform *Dirac* and *Color* matrix related computations, polynomial factorization, ...
* **Qgraf** to generate the Feynman aptitudes/diagrams.
* **FIRE** or **KIRA** for the *IBP* reduction.

Another core feature of **HepLib** is the numerical evaluation of *Master Integrals* using *Sector Decomposition* with a customizable numerical integrator including the arbitrary precision supported by **MPFR**.

Reference: <https://doi.org/10.1016/j.cpc.2021.107982>