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:
Jan. 11, 2005
Filed:
Jul. 31, 2001
Robert F. Enenkel, Don Mills, CA;
Fred G. Gustavson, Briar Cliff Manor, NY (US);
Bruce M. Fleischer, Bedford Hills, NY (US);
Jose E. Moreira, Yorktown Heights, NY (US);
Robert F. Enenkel, Don Mills, CA;
Fred G. Gustavson, Briar Cliff Manor, NY (US);
Bruce M. Fleischer, Bedford Hills, NY (US);
Jose E. Moreira, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A processor for performing a multiply-add instruction on a multiplicand A, a multiplier B, and an addend C, to calculate a result D. The operands are double-precision floating point numbers and the result D is a canonical-form extended-precision floating point number having a high order component and a low order component. The processor is a fused multiply-add processor with a multiplier, an adder, a normalizer and a rounder. The post-adder data path, the normalizer and the rounder each have a data width sufficient to represent post-adder intermediate results to permit the high and low order words of a correctly-rounded result D to be computed. The mantissas of the extended-precision result D are provided such that the high order word mantissa is stored to double precision registers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile