Title
Floating-Point Arithmetic on Round-to-Nearest Representations
Abstract
Recently we introduced a class of number representations denoted RN-representations, allowing an un-biased rounding-to-nearest to take place by a simple truncation. In this paper we briefly review the binary fixed-point representation in an encoding which is essentially an ordinary 2's complement representation with an appended round-bit. Not only is this rounding a constant time operation, so is also sign inversion, both of which are at best log-time operations on ordinary 2's complement representations. Addition, multiplication and division is defined in such a way that rounding information can be carried along in a meaningful way, at minimal cost. Based on the fixed-point encoding we here define a floating point representation, and describe to some detail a possible implementation of a floating point arithmetic unit employing this representation, including also the directed roundings.
Year
Venue
Field
2012
CoRR
Discrete mathematics,Truncation,Fixed-point arithmetic,Algebra,Floating point,Arithmetic,Rounding,Multiplication,Binary scaling,Signed zero,Mathematics,Binary number
DocType
Volume
Citations 
Journal
abs/1201.3914
1
PageRank 
References 
Authors
0.50
3
3
Name
Order
Citations
PageRank
Peter Kornerup127240.50
Jean-Michel Muller246666.61
Adrien Panhaleux361.80