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.:
Date of Patent:
Mar. 21, 2017
Filed:
Mar. 10, 2015
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Seiji Maeda, Kawasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A floating-point arithmetic device of an embodiment includes: a first functional unit configured to receive first input data to execute first arithmetic operation in a first rounding mode; a second functional unit configured to receive second input data to execute second arithmetic operation in a second rounding mode; a first output circuit capable of selectively outputting a first output or a first arithmetic operation result of the first arithmetic operation, the first output obtained by halving a first value obtained by adding a second arithmetic operation result of the second arithmetic operation to the first arithmetic operation result; and a second output circuit capable of selectively outputting a second output or the second arithmetic operation result, the second output obtained by halving a second value obtained by subtracting the second arithmetic operation result from the first arithmetic operation result.