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:
Dec. 26, 1989
Filed:
Dec. 28, 1988
Applicant:
Inventors:
John D Jabusch, Endwell, NY (US);
Linda A Kovacs, Endicott, NY (US);
Timothy G Plzak, Endicott, NY (US);
Robert R Richardson, Vestal, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
3647365 ;
Abstract
An apparatus is provided which tests the magnitude and sign digits of packed decimal binary numbers during performance of arithmetic operations which combine the numbers for the purpose of setting status bits used for setting condition codes, determining execution paths, setting the sign of the result and detecting invalid conditions.