On the design of a radix-10 online floating-point multiplier

Robert D. McIlhenny; Milos D. Ercegovac

doi:10.1117/12.826754

3 September 2009 On the design of a radix-10 online floating-point multiplier

Proceedings Volume 7444, Mathematics for Signal and Information Processing; 74440P (2009) https://doi.org/10.1117/12.826754
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

This paper describes an approach to design and implement a radix-10 online floating-point multiplier. An online approach is considered because it offers computational flexibility not available with conventional arithmetic. The design was coded in VHDL and compiled, synthesized, and mapped onto a Virtex 5 FPGA to measure cost in terms of LUTs (look-up-tables) as well as the cycle time and total latency. The routing delay which was not optimized is the major component in the cycle time. For a rough estimate of the cost/latency characteristics, our design was compared to a standard radix-2 floating-point multiplier of equivalent precision. The results demonstrate that even an unoptimized radix-10 online design is an attractive implementation alternative for FPGA floating-point multiplication.

Citation Download Citation

Robert D. McIlhenny and Milos D. Ercegovac "On the design of a radix-10 online floating-point multiplier", Proc. SPIE 7444, Mathematics for Signal and Information Processing, 74440P (3 September 2009); https://doi.org/10.1117/12.826754

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