cowlis2003
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Decimal FloatingPoint: Algorism for Computers,
Michael F. Cowlishaw,
Proceedings of the 16th IEEE Symposium on Computer Arithmetic,
ISBN 076951894X,
pp104–111,
IEEE,
June 2003.
Abstract: Decimal arithmetic is the norm in human calculations, and humancentric applications must use a decimal floatingpoint arithmetic to achieve the same results. Initial benchmarks indicate that some applications spend 50% to 90% of their time in decimal processing, because software decimal arithmetic suffers a 100× to 1000× performance penalty over hardware. The need for decimal floatingpoint in hardware is urgent. Existing designs, however, either fail to conform to modern standards or are incompatible with the established rules of decimal arithmetic. This paper introduces a new approach to decimal floatingpoint which not only provides the strict results which are necessary for commercial applications but also meets the constraints and requirements of the IEEE 854 standard. A hardware implementation of this arithmetic is in development, and it is expected that this will significantly accelerate a wide variety of applications.
Note: Softcopy is available in PDF.
Comment:
Decimal floatingpoint justification and new combined arithmetic rules.
