The Symmetric Table Addition Method for Accurate Function Approximation

نویسندگان

  • James E. Stine
  • Michael J. Schulte
چکیده

This paper presents a high-speed method for computing elementary functions using parallel table lookups and multi-operand addition. Increasing the number of tables and inputs to the multi-operand adder significantly reduces the amount of memory required. Symmetry and leading zeros in the table coefficients are used to reduce the amount of memory even further. This method has a closed-form solution for the table entries and can be applied to any differentiable function. For 24-bit operands, this method requires two to three orders of magnitude less memory than conventional table lookups.

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عنوان ژورنال:
  • VLSI Signal Processing

دوره 21  شماره 

صفحات  -

تاریخ انتشار 1999