Automatic code generator for higher order integrators. Some explicit algorithms for higher order symplectic integration of a large class of Hamilton’s equations have recently been discussed by the authors and A. Kværnø [Int. J. Geom. Methods Mod. Phys. 11, No. 1, Article ID 1450009, 20 p. (2014; Zbl 1301.37062)]. Here we present a Python program for automatic numerical implementation of these algorithms for a given Hamiltonian, both for double precision and multiprecision computations. We provide examples of how to use this program, and illustrate behavior of both the code generator and the generated solver module(s).

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  1. Mushtaq, Asif; Olaussen, Kåre: Automatic code generator for higher order integrators (2014)