Numerical Function Generators Using LUT Cascades.

This paper proposes an architecture and a synthesis method for high-speed computation of fixed-point numerical functions such as trigonometric, logarithmic, sigmoidal, square root, and combinations of these functions. Our architecture is based on the lookup table (LUTE) cascade, which results in a significant reduction in circuit complexity compared to traditional approaches. This is suitable for automatic synthesis and we show a synthesis method that converts a Matlab-like specification into an LUTE cascade design. Experimental results show the efficiency of our approach as implemented on a field-programmable gate array (FPC). [ABSTRACT FROM AUTHOR]