Emrys::ProductFactor Concept Reference

What a Product takes as a factor: a density (HasLogDensity), or parameters that toDensity() checks, such as a GaussianParams, which the product holds and checks itself. More...

#include <EmrysFilter/Distributions/Product.h>

Concept definition

template<typename T>
concept ProductFactor = (HasLogDensity<T> && internal::HasMoments<T>)
                     || (internal::CheckedParams<T>
                         && internal::HasMoments<typename decltype(std::declval<T const &>().toDensity())::value_type>)

Detailed Description

What a Product takes as a factor: a density (HasLogDensity), or parameters that toDensity() checks, such as a GaussianParams, which the product holds and checks itself.

Either way the density must have moments(), from which the product's are made.