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:
May. 15, 1990
Filed:
Apr. 17, 1989
Jeffrey D Brown, Rochester, MN (US);
Donald L Freerksen, Rochester, MN (US);
Scott A Hilker, Rochester, MN (US);
Daniel L Stasiak, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus for processing postnormalization and rounding in parallel in floating point arithmetic circuits. The fractional result of a floating point arithmetic operation is simultaneously passed to a normalized circuit and a round circuit, and the first two bit positions of the fractional result are examined. If the 2-bit format is 1.X the round circuit is activated; if the 2-bit format is 0.1X the fractional result is shifted left one position and the round circuit is activated; if the 2-bit format is in neither of the above formats the normalize circuit is activated. In no event is it necessary to activate sequentially the normalize circuit and the round circuit.