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Logarithm/inverse-logarithm converter utilizing second-order term and method of using same

  • US 5,703,801 A
  • Filed: 01/31/1995
  • Issued: 12/30/1997
  • Est. Priority Date: 01/31/1995
  • Status: Expired due to Fees
First Claim
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1. A logarithm converter, which comprises:

  • a memory for storing a plurality of parameters and a plurality of second-order terms, wherein the parameters are calculated using a least squares method to estimate a logarithmic function over a domain of input values, the memory providing as output ones of the parameters and a second-order term which correspond to an input value; and

    arithmetic means, operatively coupled to the memory, for generating a log value by performing arithmetic operations on the input value, the ones of the parameters, and the second-order term.

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