Nonlinear function processing apparatus and method for executing approximate computation, and an approximate computation circuit module for nonlinear function processing

Abstract

A nonlinear function processing device includes: an approximate computation circuit module, disposed within a hardware structure and configured to selectively execute one of a plurality of functional computation modules based on a control signal, so as to perform an approximate computation corresponding to a nonlinear function; an approximation control module, coupled to the approximate computation circuit module and configured to execute a data processing procedure in a logarithmic–exponential inverse form corresponding to the selected functional computation module, and to analyze the data processing procedure to generate a corresponding control signal, thereby dynamically establishing at least one computation path within the approximate computation circuit module; and a data routing module, coupled to the approximate computation circuit module and configured to route input data required by the data processing procedure to the approximate computation circuit module, and to perform a corresponding computation based on the established computation path.

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