Numerical Libraries for Urbit

Status ~2026.1.21: Lagoon updated for Vere64 by @matthewlevan; Saloon conversion to Chebyshev basis functions underway by @sigilante.

This repository organizes the core numerical computing apparatus for Urbit:

• /lib/math provides basic single-atom transcendental functions; it supersedes sigilante/libmath.
  • README.md
• Lagoon (Linear AlGebra in hOON) offers operations in the tradition of BLAS and LAPACK (like NumPy's pure matrix operations).
  • README.md
  • /desk contains the Hoon-specific code for Lagoon.
    • /lib/lagoon is the main library for Lagoon operations.
    • /lib/twoc supports two's-complement signed integers.
    • /lib/fixed supports fixed-precision operations.
    • /sur/lagoon supplies type headers for Lagoon.
  • /vere contains the C jets for the Vere runtime.
• Saloon (Scientific ALgorithms in hOON) affords transcendental functions (like NumPy's transcendental functions, optimizers, etc.).
  • README.md
  • /desk contains the Hoon-specific code for Saloon.
• Maroon (MAchine LeaRning in hOON) implements machine learning algorithms as a sidecar to Urbit.
  • README.md
  • /desk contains the Hoon-specific code for Maroon, currently an in-progress tinygrad implementation.

The Urbit Foundation also provides SoftBLAS to support software-defined jetting. It is used in the Lagoon jets.