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Floating-point arithmetic circuit and method

A technology of computing circuits and computing methods, applied in computing, electrical digital data processing, digital data processing components, etc., can solve problems such as limited overall performance of processors

Active Publication Date: 2021-02-12
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conventional processors usually optimize individual operations, but optimizing individual operations does little to improve the overall performance of the processor

Method used

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  • Floating-point arithmetic circuit and method
  • Floating-point arithmetic circuit and method
  • Floating-point arithmetic circuit and method

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Embodiment Construction

[0014] The technical terms in the following description refer to the customary terms in this technical field. If some terms are explained or defined in this manual, the explanations of these terms shall be subject to the descriptions or definitions in this manual.

[0015] The disclosed content of the present invention includes a floating-point arithmetic circuit and method. Since some of the components included in the floating-point arithmetic circuit of the present invention may be known components individually, on the premise of not affecting the full disclosure and implementability of the invention of the device, the details of the known components will be described in the following description Abridged. In addition, part or all of the process of the floating-point number calculation method of the present invention can be executed by the floating-point number calculation circuit of the present invention or its equivalent device. On the premise of not affecting the full dis...

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Abstract

The invention discloses a floating-point arithmetic circuit and method. The floating-point arithmetic circuit is used to perform a fusion multiply-accumulate-add operation or a multiply-accumulate-add operation on a first operand, a second operand and a third operand, or perform a multiplication-accumulate-add operation on the first operand and the second operand The operand performs a multiplication operation. The floating-point arithmetic circuit includes two trimming circuits, a multiplication circuit, a selection circuit, a control circuit and an addition circuit. The control circuit controls the scheduling of various calculations and the utilization of resources on each calculation path, so as to simplify the circuit and improve the performance of the processor.

Description

technical field [0001] The present invention relates to operations of floating point numbers, in particular to multiplication of floating point numbers, multiplication and accumulation (mac) and fused multiplication and accumulation (fused mac). Background technique [0002] The arithmetic operations performed by the processor on floating-point numbers often involve operations such as addition, subtraction, multiplication, division, multiply-accumulate, and fused multiply-accumulate. Both the multiply-accumulate-add operation and the fusion multiply-accumulate-add operation calculate A*B+C (A, B, and C are all floating-point numbers), but because the multiply-accumulate-add operation performs rounding once in the multiplication operation and the addition operation, However, the fused multiply-accumulate-add operation is only modified once in the addition operation, so the fused multiply-accumulate-add operation will obtain a relatively accurate result. Conventional processo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/575
Inventor 陈嘉怡
Owner REALTEK SEMICON CORP