Abstract
Multiple precision arithmetic is very useful to optimally trade off area and time when implementing real-time signal processing algorithms on application specific architectures. A wide range of area-time tradeoffs is possible in multiple precision, with the degree of multi-precision as a parameter. To cope with this complex optimisation problem, there is definitely a need for good models and support by synthesis tools. This paper describes how multiple precision arithmetic has been formalised and implemented in formal software procedures within theCathedral-2nd high-level synthesis environment, developed at IMEC. The use of multiple precision arithmetic is illustrated by means of a design of an industrial application.
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