Here is a list of all files with brief descriptions:

[detail level 1234]

docs
api
include
qtty
units
acceleration.hpp
amount.hpp
angular.hpp
area.hpp
capacitance.hpp
charge.hpp
current.hpp
density.hpp
dimensionless.hpp
energy.hpp
force.hpp
frequency.hpp
illuminance.hpp
inductance.hpp
inverse_solid_angle.hpp
length.hpp
luminous_flux.hpp
luminous_intensity.hpp
magnetic_flux.hpp
magnetic_flux_density.hpp
mass.hpp
photon_radiance.hpp
power.hpp
pressure.hpp
radiance.hpp
resistance.hpp
solid_angle.hpp
spectral_photon_radiance.hpp
spectral_radiance.hpp
temperature.hpp
time.hpp
velocity.hpp
voltage.hpp
volume.hpp
angles.hpp	Angle wrapping and separation helpers, mirroring the angular methods on the Rust Quantity<U: AngularUnit> (qtty_core::angular)
ffi_core.hpp	Core quantity template and error translation utilities
literals.hpp
math.hpp	Dimension-aware math helpers mirroring the Rust Quantity API
qtty.hpp	Main header for the qtty C++ wrapper library
satellite.hpp	Spacecraft astrodynamics quantities, mirroring the Rust qtty satellite feature (dynamics + tolerances modules)
serialization.hpp	JSON serialization helpers for qtty quantities