Generation of Reciprocal, Square Root, and So Forth by Means of a Multiplier with an Operand Modifier

TAKAGI Naofumi

Bibliographic Information

Other Title

乗数変形機能付き乗算器を用いた逆数や平方根等の生成

Description

An efficient method for generating the reciprocal, square root, square root reciprocal, square reciprocal, cube, and so forth of an operand by means of a multiplier with an operand modifier is proposed. The operand modifier performs bitwise complementation, shift and/or redundant binary Booth recoding. The method is a modification of the piecewise linear approximation based on the first-order Taylor expansion. The same accuracy is achieved. The multiplication and an addition required for the linear approximation are replaced by only one multiplication with a modification of the operand. The required table size is reduced, because only one coefficient has to be stored. 1 clock cycle may be saved, because the addition is removed.

Journal

Technical report of IEICE. DSP

Technical report of IEICE. DSP 97 (315), 57-64, 1997-10-17

The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

CRID: 1573387452253280640

NII Article ID: 110003279510

NII Book ID: AN10060786

ISSN: 09135685

Text Lang: ja

Data Source

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