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:
Sep. 04, 2012
Filed:
Sep. 22, 2008
Lawrence Joseph Powell, Jr., Round Rock, TX (US);
Martin Stanley Schmookler, Austin, TX (US);
Son Dao Trong, Stuttgart, DE;
Lawrence Joseph Powell, Jr., Round Rock, TX (US);
Martin Stanley Schmookler, Austin, TX (US);
Son Dao Trong, Stuttgart, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system for handling denormal floating point operands when the result must be normalized. A leading zero counter (lzc) on the operand B (opB) is used to limit alignment shifts when opB is denormal but is much greater than the product of operands A and C, i.e. AC. By limiting the additional shift of B during normalization, by the number of leading zeros in opB, no increase is needed in the output bus of the alignment shifter. Furthermore, the additional shift may be done either in the alignment shifter, or postponed to a later stage in the pipeline, where the result is normalized.