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:
Jul. 03, 2012
Filed:
Feb. 27, 2004
Sheueling Chang Shantz, Cupertino, CA (US);
Leonard Rarick, Los Altos, CA (US);
Lawrence Spracklen, Boulder Creek, CA (US);
Hans Eberle, Mountain View, CA (US);
Nils Gura, Mountain View, CA (US);
Sheueling Chang Shantz, Cupertino, CA (US);
Leonard Rarick, Los Altos, CA (US);
Lawrence Spracklen, Boulder Creek, CA (US);
Hans Eberle, Mountain View, CA (US);
Nils Gura, Mountain View, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
In response to executing an arithmetic instruction, a first number is multiplied by a second number, and a partial result from a previously executed single arithmetic instruction is fed back from a first carry save adder structure generating high order bits of the current arithmetic instruction to a second carry save adder tree structure being utilized to generate low order bits of the current arithmetic instruction to generate a result that represents the first number multiplied by the second number summed with the high order bits from the previously executed arithmetic instruction. Execution of the arithmetic instruction may instead generate a result that represents the first number multiplied by the second number summed with the partial result and also summed with a third number, the third number being fed to the carry save adder tree structure.