ID:15334 DSP block WYSIWYG primitive "<name>" is using rounding, but the multipliers are not 18 bits wide

CAUSE: The specified DSP block WYSIWYG primitive is using rounding because its round port is connected. However, the multipliers are not 18 bits wide, which is required when using rounding.

ACTION: Modify design to use full 18-bit wide multipliers: for example, by padding the LSBs of the multiplier with zeros. If you do not use rounding, ensure the round port is not connected or is connected to GND.