\begin{itemize}
\item Positional popcount adds up the totals of each bit set to 1 in each bit-position, of an array of input values.
\item Notoriously difficult to do in SIMD assembler: typically 550 lines
- \item https://github.com/clausecker/pospop
+ \item https://github.com/clausecker/pospop - Full writeup: \\
+ https://libre-soc.org/openpower/sv/cookbook/pospopcnt
\end{itemize}