Hardware architecture for popcount
Source of Publication
WSEAS Transactions on Computers
Bit-counting implementations are used to count the number of "1's" in a given computer word. There are several techniques to implement bit-counting operation. These techniques are either software algorithms or specialized hardware techniques. The hardware implementations require dedicated hardware supported in the processor or associated math co-processor. The performance of the hardware-supported bit-counting was found to be superior to most software implementations (such as serial shifting). In this paper, a new hardware implementation of bit-counting routine is presented that reduces the number of logic gates and the delay in comparison with existing implementations. The performance of the proposed hardware bit-counting implementations is further investigated and evaluated.
El-Qawasmeh, Eyas; Tubaishat, Abdallah; Baba, Sami; and Dalalah, Ahmed, "Hardware architecture for popcount" (2006). Scopus Indexed Articles. 2439.