NumCosmo Overview [src]

NumCosmo API Overview

This is the generated API reference for NumCosmo. The library is split into two GObject namespaces; pick the one matching what you need:

  1. NumCosmoMath — API Reference
    The math foundation, independent of cosmology: vectors and matrices, splines, integration and differentiation, special functions, the model/MSet parameter system, the fitting and MCMC tools (including the APES sampler), FFTLog, and HEALPix. Class names are prefixed Ncm.
  2. NumCosmo — API Reference
    The cosmology layer built on top: background models and distances, perturbations, the matter power spectrum, large-scale structure, galaxy clusters, weak lensing, and the observational likelihoods (SNIa, BAO, CMB, cross-correlations). Class names are prefixed Nc.

How the two relate

Nc cosmology models are concrete realizations of the generic Ncm model and fitting machinery. A cosmological model is an NcmModel with a defined parameter set; it plugs into the same NcmFit, NcmFitMC, and NcmFitESMCMC tools used for any statistical model. This means the prediction code and the constraint code share one object.

Where to start

  • Conceptual and physics background, tutorials, and worked examples live on the NumCosmo website.
  • For the mathematical derivations behind specific classes, follow the theoretical background links in the class documentation (for example, NcmCSQ1D links to the CSQ1D Formalism page).
  • Downstream code should include only the umbrella headers numcosmo.h and numcosmo-math.h, never individual subdirectory headers.