lsjk—a C++ library for arbitrary-precision numeric evaluation of the generalized log-sine functions Original Research Article

Generalized log-sine functions image appear in higher order ɛ-expansion of different Feynman diagrams. We present an algorithm for the numerical evaluation of these functions for real arguments. This algorithm is implemented as a C++ library with arbitrary-precision arithmetics for integer image and image. Some new relations and representations of the generalized log-sine functions are given.