While building a in-memory compressed datastructure, I needed a library for efficient integer compression. JavaFastPFOR was what I needed, so I ported it to C#. See the original project by Daniel Lemire here: https://github.com/lemire/JavaFastPFOR

• .NET Core 2.0 SDK
• Visual Studio 2019

The API is excatly the same as JavaFastPFOR. See the documentation here: http://www.javadoc.io/doc/me.lemire.integercompression/JavaFastPFOR/

• Daniel Lemire and Leonid Boytsov, Decoding billions of integers per second through vectorization, Software Practice & Experience 45 (1), 2015. http://arxiv.org/abs/1209.2137 http://onlinelibrary.wiley.com/doi/10.1002/spe.2203/abstract
• Daniel Lemire, Leonid Boytsov, Nathan Kurz, SIMD Compression and the Intersection of Sorted Integers, Software Practice & Experience (to appear) http://arxiv.org/abs/1401.6399
• Matteo Catena, Craig Macdonald, Iadh Ounis, On Inverted Index Compression for Search Engine Efficiency, Lecture Notes in Computer Science 8416 (ECIR 2014), 2014. http://dx.doi.org/10.1007/978-3-319-06028-6_30