Bulirsch-Stoer Method in Rust

This crate contains a simple implementation of the Bulirsch-Stoer method for solving ordinary differential equations.

This crate may be useful in situations where an ODE is being integrated step by step with a prescribed step size that is not too large relative to the dynamical timescale, for example in cyber-physical system simulations with a fixed control cycle period. By contrast, routines from the ode_solvers crate can require many more system evaluations to produce the same performance.