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Improved subtraction function for logarithmic number system

Lookup NU author(s): Dr Nick Coleman



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Logarithmic number system can be highly considered as an alternative to floating-point, specifically for applications that require a wide dynamic range of numbers for their arithmetic operations. To date, its implementation is still restricted by complexity of performing addition and subtraction functions as a result of using large lookup tables. In this paper, a method is revealed to substantially reduce these tables by means of using second order co-transformation procedure. The results predominantly show that the proposed technique offers significantly better speed, area and accuracy than current state-of-the-art logarithmic number system. © 2013 The Authors.

Publication metadata

Author(s): Ismail RC, Murad SAZ, Hussin R, Coleman JN

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Malaysian Technical Universities Conference on Engineering & Technology (MUCET 2012)

Year of Conference: 2012

Pages: 387-392

Online publication date: 30/03/2013

Date deposited: 07/02/2019

ISSN: 1877-7058

Publisher: Elsevier BV


DOI: 10.1016/j.proeng.2013.02.050

Library holdings: Search Newcastle University Library for this item

Series Title: Procedia Engineering

ISBN: 9781627486347