两种多操作数二进制加法方法的比较

D. Atkins, S. Ong
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引用次数: 4

摘要

本文介绍了关于P>2个数字的加法方法研究的一个阶段的结果,每个数字编码为长度为n的数字向量(数字向量)。这种多操作数加法最常在将一组部分乘积简化为乘法实现中的单个结果的背景下进行研究。然而,更广义的多操作数加法,尤其是以内积计算的形式,对数字计算机的许多科学应用至关重要。尽管在任何通用机器中,多操作数加法都是通过累积(及时迭代)轻松完成的,但对以二维和三维信号处理为典型的高速计算的需求促使实现专用的、硬件密集型的多操作数加法结构。例如,本研究的部分动机是在设计用于实时重建跳动的心脏和呼吸的肺的三维图像的专用处理器时,需要快速同时添加多达100个16位操作数[1]。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A comparison of two approaches to multi-operand binary addition
This paper presents the results of one phase of a study concerning methods for addition of P>2 numbers, each encoded as a vector of digits (digit vector) of length N. Such multi-operand addition has been studied most often in the context of reducing a set of partial products to a single result in the implementation of multiplication. More generalized multi-operand addition, most notably in the form of inner product calculations is, however, central to numerous scientific applications of digital computers. Although multi-operand addition is trivially accomplished by accumulation (iteration in time) in any general purpose machine, demands for very high-speed computation, typified by 2- and 3-D signal processing prompt implementation of dedicated, hardware-intensive structures for multi-operand addition. This study, for example, is motivated in part by requirements for rapid simultaneous addition of up to 100, 16-bit operands in the design of a dedicated processor for real-time reconstruction of 3-D images of the beating heart and breathing lungs [1].
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