Generalized log-sine functions Ls (k) j (θ) appear in higher order ε-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 0 ≤ k ≤ 9 and j ≥ 2. Some new relations and representations of the generalized log-sine functions are given.
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