--- Quote Start ---
Now, this is Q4.4. I need Q2.2. You can't represent 14 with two bits. So there will be some wrap around. That is why I need rounding. Essentially, the desired product would be some smaller wrap around number, and a fractional portion of two bits.
--- Quote End ---
It's unclear, what you want to achieve.
As a first point, the term rounding isn't commonly used for the handling of overflow problems. Basically there are two options:
- omit/cut the high bits, which causes wrap around, in case of signed numbers often resulting in a wrong sign
- apply saturation logic, limiting the output to the highest respectively lowest value that can be represented in the number system. This technique is mostly applied in digital signal processing
Honored Contributor
