Invention Application
- Patent Title: MULTIPLIER UNIT WITH SPECULATIVE ROUNDING FOR USE WITH DIVISION AND SQUARE-ROOT OPERATIONS
- Patent Title (中): 具有分段和平方根操作的使用范围的多用户单元
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Application No.: US14305651Application Date: 2014-06-16
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Publication No.: US20150363169A1Publication Date: 2015-12-17
- Inventor: Boris S Alvarez-Heredia , Edvin Catovic
- Applicant: Apple Inc.
- Main IPC: G06F7/52
- IPC: G06F7/52 ; G06F5/01 ; G06F7/544

Abstract:
Embodiments of a multiplier unit that may be used for division and square root operations are disclosed. The embodiments may provide a reduced and fixed latency for denormalization and rounding used in the division and square root operations. A storage circuit may be configured to receive first and second source operands. A multiplier circuit may be configured to perform a plurality of multiplication operations dependent upon the first and second source operands. Each result after an initial result of the multiplier may also depend on at least one previous result. Circuitry may be configured to perform a shift operation and a rounding operation on a given result of the plurality of results. An error of the given result may be less than a predetermined threshold value.
Public/Granted literature
- US09645791B2 Multiplier unit with speculative rounding for use with division and square-root operations Public/Granted day:2017-05-09
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