Hardware operation circuit for calculating Power function and data processing method

Abstract

The invention discloses a hardware operation circuit for calculating a Power function and a data processing method, and the hardware operation circuit comprises a logarithm calculation module, a multiplication module and an index calculation module. The logarithm calculation module is configured to generate a first intermediate parameter according to the order code of the first parameter, calculate a second intermediate parameter by adopting a table look-up and logarithm Taylor series expansion mode according to the mantissa of the first parameter, and generate a logarithm calculation result according to the first intermediate parameter and the second intermediate parameter; the multiplication module is used for calculating a product of the logarithm calculation result and a second parameter, and recording the product as a multiplication calculation result; and the index calculation module is configured to perform index operation according to the multiplication calculation result of the multiplication module to generate Power function operation results of the first parameter and the second parameter. According to the technical scheme, the hardware operation circuit of the Power function is optimized, so that the hardware operation circuit can provide high calculation precision, support a wider data range and reduce resource occupation.

Description

technical field [0001] The present application relates to the technical field of hardware arithmetic circuits, and in particular, to a hardware arithmetic circuit for calculating a Power function and a data processing method in an industrial hardware arithmetic circuit. Background technique [0002] Power function is a common transcendental function, the expression is f(x,y)=x y , which is widely used in digital signal processing, artificial intelligence, control systems and navigation systems, among which, scientific calculations such as Taylor series expansion and Fourier transform can be transformed into comprehensive operations of Power functions. Although the software calculation method of the Power function has been very common, in practical engineering applications, it is often necessary to implement a dedicated hardware for the operation of the Power function. [0003] For example, in the relevant document "Design and Verification of X-DSP IP Core Power Function Com...

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Problems solved by technology

[0005] 1. Since the coefficients are stored in a lookup table, the storage resources are determined by the size of the divided interval and the number of items expanded by the polynomial, which usually consume a large amount of storage resources;

[0006] 2. Due to storage limitations, the divided interval cannot be infinitely small. To meet the calculation accuracy, more polynomial expansion items are required, which will bring greater computing resource consumption and computing delay.

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