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:
May. 26, 1998
Filed:
Nov. 30, 1995
Applicant:
Inventors:
Samuel D Naffziger, Fort Collins, CO (US);
David R Smentek, Columbia, MD (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
36474807 ;
Abstract
A method and apparatus for decoupling the high order portion of the addend from the multiply result in an FMAC (floating-point multiply accumulate unit) such that the FMAC's datapath width is bounded to '2m+1'-bits, and the maximum width of required adders, shifters and leading bit anticipators is also bounded to '2m+1'-bits. The method and apparatus 1) reduce the necessary chip area for implementing an FMAC, and 2) reduce the length of routing paths through adders and shifters.