is_base_pointer_convertible.hpp

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#ifndef STAN_MATH_PRIM_META_IS_BASE_POINTER_CONVERTIBLE_HPP
#define STAN_MATH_PRIM_META_IS_BASE_POINTER_CONVERTIBLE_HPP
 
#include <stan/math/prim/meta/require_helpers.hpp>
#include <type_traits>
#include <utility>
 
namespace stan {
 
template <template <typename> class Base, typename Derived>
struct is_base_pointer_convertible {
  static std::false_type f(const void *);
  template <typename OtherDerived>
  static std::true_type f(const Base<OtherDerived> *);
  enum {
    value
    = decltype(f(std::declval<std::remove_reference_t<Derived> *>()))::value
  };
};
 
}  // namespace stan
 
#endif