The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8166092 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 24, 2012

Filed:

May. 21, 2008
Applicant:

Shiro Kamoshida, Kawasaki, JP;

Inventor:

Shiro Kamoshida, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/487 (2006.01);
U.S. Cl.
CPC ...
Abstract

When division X/Y of floating point numbers is performed, bit string data of a mantissa x including a fraction xf of X or a mantissa y including a fraction yf of Y is shifted in accordance with magnitude relation between them to perform a fraction computation. Thereby, a fraction division result in which the position of the most significant bit is fixed at a prescribed digit is generated. When a square root operation √Y is performed, a fraction square root operation result in which the position of the most significant bit is fixed at a prescribed digit is generated by an exception handling if all of the three conditions that all the bits in the fraction of Y are one, a difference between the exponent ye of Y and a bias value b is an odd number, and a rounding mode is a positive infinity direction are satisfied.


Find Patent Forward Citations

Kamoshida, Shiro. (2012). Arithmetic device for performing division or square root operation of floating point number and arithmetic method therefor (U.S. Patent No. 8166092). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8166092

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