Saturation arithmetic and rounding have area and performance costs. Use only if
necessary. For example a Reinterpret block does not cost any logic. A Convert (cast)
block does not cost any logic if Quantization is set to Truncate and if
Overflow is set to Wrap. If the data type requires the use of the
Rounding and Saturation options, then pipeline the Convert block with embedded register
stages. If you are using a DSP48E1, the rounding can be done within the DSP48E1.