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Type: Conference paper
Title: A decimal carry-free adder
Author: Nikmehr, H.
Phillips, B.
Lim, C.
Citation: Smart structures, devices, and systems II : 13-15 December 2004, Sydney, Australia / Said F. Al-Sarawi (ed.) : pp. 786-797
Publisher: SPIE
Publisher Place: Bellingham, Washington, USA
Issue Date: 2005
Series/Report no.: Proceedings of SPIE--the International Society for Optical Engineering ; 5649.
ISBN: 0819456098
ISSN: 0277-786X
Conference Name: SPIE International Symposium on Smart Structures, Devices, and Systems II (2004 : Sydney, Australia)
Editor: Al Sarawi, S.
Statement of
Hooman Nikmehr, Braden Phillips and Cheng-Chew Lim
Abstract: Recently, decimal arithmetic has become attractive in the financial and commercial world including banking, tax calculation, currency conversion, insurance and accounting. Although computers are still carrying out decimal calculation using software libraries and binary floating-point numbers, it is likely that in the near future, all processors will be equipped with units performing decimal operations directly on decimal operands. One critical building block for some complex decimal operations is the decimal carry-free adder. This paper discusses the mathematical framework of the addition, introduces a new signed-digit format for representing decimal numbers and presents an efficient architectural implementation. Delay estimation analysis shows that the adder offers improved performance over earlier designs.
Rights: ©2005 SPIE--The International Society for Optical Engineering.
DOI: 10.1117/12.584722
Appears in Collections:Aurora harvest 2
Electrical and Electronic Engineering publications

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