wigner
======

``wigner`` is a C++23 static library for numerical SU(2) angular-momentum
algebra. It provides the coupling, recoupling, rotation, and
spherical-harmonic operations shared by spectrum and amplitude analyses.

The manual starts with a working program, then fixes conventions before
describing each family of coefficients. Numerical limits, inspection tools,
build and installation details, and the complete public API follow.

.. toctree::
   :maxdepth: 2
   :caption: Contents
   :numbered:

   getting_started
   conventions
   coefficients
   rotations_harmonics
   enumeration
   numerics
   tools
   building
   api
   LICENSE