return op.emitOpError()
               << "Missing " << attr_name << " attribute in backend_config";
      }
      auto attr = backend_config.getAs<FloatAttr>(attr_name);
      if (!attr || !attr.getType().isF32()) {
        return op.emitOpError()
               << attr_name
               << " attribute in backend_config must be of f32 type";
      }
      return success();
    };
    auto check_bool_attr =

        Eigen::NumTraits<Eigen::bfloat16>::epsilon());
    auto value = APFloat(APFloat::BFloat(), APInt(16, raw_epsilon));
    return DenseElementsAttr::get(scalar_ty, value);
  } else if (element_ty.isF32()) {
    auto value = APFloat(std::numeric_limits<float>::epsilon());
    return DenseElementsAttr::get(scalar_ty, value);
  } else if (element_ty.isF64()) {
    auto value = APFloat(std::numeric_limits<double>::epsilon());