three_body_ode_test, a Fortran90 code which calls three_body_ode(), which simulates the solution of the planar three body problem.
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three_body_ode, a Fortran90 code which defines a set of ordinary differential equations (ODE) which simulates the behavior of three planets, constrained to lie in a plane, and moving under the influence of gravity, by Walter Gander and Jiri Hrebicek.