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:
Aug. 02, 2016
Filed:
Sep. 05, 2013
Altera Corporation, San Jose, CA (US);
Tomasz Czajkowski, Toronto, CA;
Altera Corporation, San Jose, CA (US);
Abstract
An integrated circuit is provided that performs floating-point addition or subtraction operations involving at least three floating-point numbers. The floating-point numbers are pre-processed by dynamically extending the number of mantissa bits, determining the floating-point number with the biggest exponent, and shifting the mantissa of the other floating-point numbers to the right. Each extended mantissa has at least twice the number of bits of the mantissa entering the floating-point operation. The exact bit extension is dependent on the number of floating-point numbers to be added. The mantissas of all floating-point numbers with an exponent smaller than the biggest exponent are shifted to the right. The number of right shift bits is dependent on the difference between the biggest exponent and the respective floating-point exponent.