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METHODS FOR CONSTRUCTING LOOKUP TABLES FOR DIVISION AND SQUARE ROOT IMPLEMENTATIONS
METHODS FOR CONSTRUCTING LOOKUP TABLES FOR DIVISION AND SQUARE ROOT IMPLEMENTATIONS
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机译:构造除法和平方根实现的查找表的方法
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摘要
Control circuitry coupled to a multiply unit which includes a plurality of stage, each of which may be configured to perform a corresponding arithmetic function, may be configured to retrieve a given entry from a lookup table dependent upon a first portion of a binary representation of an input operand. An error value of an error function evaluated dependent upon a lookup value in a given entry of the plurality of entries is included in a predetermined error range. The control circuitry may be further configured to determine an initial approximation of a result of an iterative arithmetic operation using the first entry and initiate the iterative arithmetic operation using the initial approximation and the input operand.
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