System and method for approximating nonlinear functions

摘要

A nonlinear function approximation system 10 is provided. The system 10 includes first and second multiples generation circuits 12 and 14 for multiplying the first and second amounts by two to three squares. The first and second function generator circuits 16 and 18 combine the first and second quantities of the first and second quantities by combining the multiples generated by the first and second drain generator circuits 12 and 14. Raise a function. The first and second approximation generating circuits 20 and 22 shift the outputs of the first and second function generating circuits 16 and 18 to generate first and second approximations of the nonlinear function. The approximation selection circuit 24 outputs the appropriate approximation generated by the first and second approximation generating circuits 20 and 22.