Title

Hardware architecture for popcount

Source of Publication

WSEAS Transactions on Computers

Abstract

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.

Document Type

Article

First Page

1626

Last Page

1631

Publication Date

7-1-2006

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