Has anyone implemented a recognition algorithm for totally unimodular matrices?

EDIT. Walter and Trümper have announced on arXiv their implementation, with source code available, of two methods for testing total unimodularity. Their paper describes the technical details of the implementation / algorithm, and also provides several experimental results.

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I found the following link for an implementation in R, where they claim to have a function for testing whether a matrix is totally unimodular. I have not checked which particular algorithm they use.

Link: R package

To my knowledge no one has implemented the algorithm. A good reference though for someone thinking about it would be Truember's book "Matroid Decomposition" which contains a fairly simple description of the necessary steps.