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:
Apr. 17, 2012
Filed:
Jan. 23, 2009
Steven R. Carlough, Poughkeepsie, NY (US);
Wen H. LI, Poughkeepsie, NY (US);
Eric M. Schwarz, Gardiner, NY (US);
Steven R. Carlough, Poughkeepsie, NY (US);
Wen H. Li, Poughkeepsie, NY (US);
Eric M. Schwarz, Gardiner, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for performing a decimal floating point operation including receiving a first operand having a first coefficient and a first exponent into a first register. A second operand having a second coefficient and a second exponent are received into a second register. An operation, either addition or subtraction, associated with the first operand and the second operand is received. Three concurrent calculations are performed on the first operand and the second operand. The three concurrent calculations include: applying the operation to the first operand and the second operand based on a first assumption; applying the operation to the first operand and the second operand based on a second assumption; and applying the operation to the first operand and the second operand based on a third assumption. A final result is selected from the first result, the second result and the third result.