High-Speed Inverse Square Roots

Abstract

Inverse square roots are used in several digital signal processing, multimedia, and scientific computing applications. This paper presents a high-speed method for computing inverse square roots. This method uses a table lookup, operand modification, and multiplication to obtain an initial approximation to the inverse square root. This is followed by a… (More)
DOI: 10.1109/ARITH.1999.762837

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