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. 05, 2013
Filed:
Feb. 18, 2008
Adam B. Collura, Hyde Park, NY (US);
Steven R. Carlough, Poughkeepsie, NY (US);
Wen He LI, Poughkeepsie, NY (US);
Eric M. Schwarz, Gardiner, NY (US);
Adam B. Collura, Hyde Park, NY (US);
Steven R. Carlough, Poughkeepsie, NY (US);
Wen He Li, Poughkeepsie, NY (US);
Eric M. Schwarz, Gardiner, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, computer program product and a system for identifying decimal floating point addition operations that guarantee operand alignment and do not require alignment, normalization or rounding are provided. The method includes: receiving an instruction to perform an addition of a first operand and a second operand; extracting a first exponent (EXP) and a first most significant digit (MSD) from the first operand; extracting a second EXP and a second MSD from the second operand; and determining whether alignment between the first operand and the second operand is guaranteed, based on the first EXP, the first MSD, the second EXP and the second MSD.