message: Add back <cmath> import to fix MacOS build.
diff: @@ -13,6 +13,8 @@ See the License for the specific language governing permissions and
  limitations under the License.
  ==============================================================================*/
  +#include <cmath>
  +
  #include "tensorflow/lite/c/c_api_internal.h"
  #include "tensorflow/lite/kernels/internal/tensor_ctypes.h"
  #include "tensorflow/lite/kernels/kernel_util.h"
  