singular.hpp

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#pragma once
 
#include <span>
 
#include <randlib/math/constants.hpp>
#include <randlib/math/functions.hpp>
#include <randlib/core/errors.hpp>
#include <randlib/core/univariate.hpp>
 
namespace randlib
{
 
class SingularDistribution : public UnivariateDistribution<double>
{
protected:
    SingularDistribution();
 
public:
    virtual ~SingularDistribution() {}
 
protected:
private:
    [[nodiscard]] double Hazard(const double &) const override;
    [[nodiscard]] double Mode() const override;
    long double ExpectedValue(const std::function<double(double)> &funPtr, double minPoint,
                              double maxPoint) const override;
    [[nodiscard]] double LikelihoodFunction(std::span<const double> sample) const override;
    [[nodiscard]] double LogLikelihoodFunction(std::span<const double> sample) const override;
};
 
} // namespace randlib
 
namespace randlib
{
 
inline SingularDistribution::SingularDistribution()
{
}
 
inline double SingularDistribution::Hazard(const double &) const
{
    return NAN;
}
 
inline long double SingularDistribution::ExpectedValue(const std::function<double(double)> &, double, double) const
{
    return NAN;
}
 
inline double SingularDistribution::Mode() const
{
    return NAN;
}
 
inline double SingularDistribution::LikelihoodFunction(std::span<const double>) const
{
    return NAN;
}
 
inline double SingularDistribution::LogLikelihoodFunction(std::span<const double>) const
{
    return NAN;
}
 
} // namespace randlib