# Delay Differential Equations (DDE)

## Features

* Autonomous DDEs with multiple dynamical variables and a single delay time (pull requests are welcome)
* Driven systems (i.e. with external input)
* Non-autonomous DDEs (using driven systems with time as external input)
* Second and fourth order integration methods
* Example models:
   * [Mackey-Glass](https://github.com/masterdezign/dde/blob/master/examples/MackeyGlass/Main.hs) with no external input
   * [Driven system](https://github.com/masterdezign/dde/blob/d22c6ff82fd56c29289366a057f3d733a23844d0/dde/Numeric/DDE/Model.hs#L60)
* Pure Haskell

## Acknowledgements

* [Justus Sagemüller](https://github.com/leftaroundabout) for making this library faster