Function.hpp

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#ifndef CORE_FUNCTION_HPP_
#define CORE_FUNCTION_HPP_

#include <string>
#include <unordered_map>
#include <vector>

namespace ComPWA {

struct Parameter {
  std::string Name;
  double Value;
};

using DataMap = std::unordered_map<std::string, std::vector<double>>;

template <typename OutputType, typename... InputTypes> class Function {
public:
  virtual ~Function() = default;

  virtual OutputType evaluate(const InputTypes &... args) noexcept = 0;

  virtual void updateParametersFrom(const std::vector<double> &) = 0;
  virtual std::vector<Parameter> getParameters() const = 0;
};

using Intensity = Function<std::vector<double>, DataMap>;

} // namespace ComPWA

#endif