Function target

system/lib/libcxx/include/__functional/function.h:523–530

  template <typename _Tp>
  _LIBCPP_HIDE_FROM_ABI const _Tp* target() const _NOEXCEPT {
    if (__policy_->__is_null || typeid(_Tp) != *__policy_->__type_info)
      return nullptr;
    if (__policy_->__clone) // Out of line storage.
      return reinterpret_cast<const _Tp*>(__buf_.__large);
    else
      return reinterpret_cast<const _Tp*>(&__buf_.__small);
  }
#  endif // _LIBCPP_HAS_RTTI
};